Not much better

I suspect when it comes to anthropogenic problems and pollutions, I think it’s not just humans to blame for anthropogenic extinctions and the like since human-associated animals like cats, dogs, sheep, goats, horses and cows and almost anything else wouldn’t be any better, given the capacity to be invasive species.

Supposing if some dog owners and hunters have a habit of letting their dogs roam in a remote island, where by chance those critters hunt and kill almost any wild animal (bear mind, canine predation on turtles and deer has been noted) and eventually those critters get to reproduce and become a problem, though that already is so to an extent.

(This could be said about any other animal but I feel canine predation is kind of overlooked and underrated, even though some owned dogs can and do hunt and kill wild animals on their own.)

Smarter birds like ravens and parrots wouldn’t be any better, that’s if you transplant them to an island (and/or hospitable planet) where they reproduce a lot as they don’t have much natural enemies, then drive out the native wildlife (the poor, long-suffering extraterrestrials) to extinction.

Even without humans, any other adaptive or human-associated animal will also have the capacity to ruin ecosystems if given the chance where if you drop wolf packs in a hospital planet, those critters will kill native wildlife and render some species extinct.

Southeastern Lincoln County Habitat Conservation Plan: Environmental Impact … (Google Books)

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POTENTIAL EFFECTS AND ANTICIPATED TAKE

5.3.5.2 Southwestern Willow Flycatcher

5.3.5.2.1 Direct Effects

Railroad operations, maintenance and urgent response activities could result in disturbance to approximately 54 acres of suitable southwestern willow flycatcher habitat (see Figure 5-4). Thus, UPRR is requesting authorization to remove up to 54 acres of suitable flycatcher habitat within its rights-of-way and lands within the Covered Area. Vegetation on the edges of flycatcher habitat could also be removed as a result of UPRR’s activities. USFWS will be provided reasonable access to lands covered under the SLCHCP to ensure compliance with the terms of the HCP and permit.

If UPRR’s activities occur during the flycatcher breeding season, there is only a minor chance that these activities would result in disturbing nesting flycatchers, as the flycatcher population in the Meadow Valley Wash is very low. To further minimize the risk of disturbance, UPRR will conduct flycatcher surveys in up to four areas of suitable southwestern willow flycatcher habitat in the vicinity of mile post markers 447 to 452 and between mile post markers 395 and 396 as delineated by the USFWS; UPRR would carry out these surveys one time during the term of the HCP prior to conducting covered activities. Up to 3 to 4 acres total suitable habitat could be disturbed in these areas (refer to Figure 5-4, maps 2 and 8, and Section 6.7.1.2).

5.3. 5.2.2 Indirect Effects

Indirect effects from Covered Activities in the Covered Area could include increased sedimentation to the Meadow Valley Wash from flood control related activities and vehicle noise disturbance to nearby southwestern willow flycatcher habitat.

UPRR and its contractors carry out a number of flood control activities within its rights-of-way such as maintaining drainage and other water carrying facilities, keeping them free from obstruction and accommodate expected water flow. Specific operation and maintenance activities include erosion and flood control actions such as removing eroded soils, sediment and debris from ditches, culverts and bridges. Urgent response actions include repairs of flood damage, removal of debris from culverts and bridges, and the possible placement of materials such as riprap to protect existing infrastructure such as culverts, embankments, and bridges, and to repair or replace damaged facilities (such as bridge abutments or footings) to allow their continued safe use or to restore them to safe use. Sedimentation of aquatic/riparian habitat in the Meadow Valley Wash could occur from sediment entering the Meadow Valley Wash as a result of these flood control activities. However, the additional sediment load contributed by UPRR activities may not be detectable in comparison with the sediment load from the entire Meadow Valley Wash system. With the implementation of avoidance and minimization measures described in Section 6.7.1.2, these potential indirect effects would be limited in scale.

5.3.6 Other Privately-Owned Lands Subiect to Land Conversion Activities 5.3.6.1 Desert Tortoise

As discussed previously in Section 4.6, there are approximately 7,104 acres of privately-owned lands along the Meadow Valley Wash within the Covered Area used for agricultural and grazing activities (Figure 5-6)- ofthe 7,104 acres of private land occurring within the Covered Area, approximately 2,256 acres occur on desert tortoise habitat along the Meadow Valley Wash, and approximately 215 acres occur within desert tortoise designated critical habitat. However, under the SLCHCP, the conversion of private lands to another land use (e.g. previously undisturbed agricultural land to urban use or grazing land to cultivated and/or irrigated agricultural lands) will not occur on desert tortoise critical habitat.

5.3.6.1.1 Direct Effects

Direct effects to desert tortoise would occur from the conversion of previously undisturbed agricultural land to urban use or from the conversion of grazing land to cultivated and/or irrigated agricultural land due to the potential for direct mortality of desert tortoises from encounters with heavy equipment during grading

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SOUTHEASTERN LINCOLN COUNTY HABITAT CONSERVATION PLAN

activities. Land conversion activities on private lands could eliminate up to approximately 564 acres of suitable desert tortoise habitat, excluding critical habitat, along the Meadow Valley Wash within the Covered Area. This loss would be the result of conversion of existing, previously undisturbed agricultural land to human residential, commercial, recreational and light industrial use or the conversion of grazing land to cultivated and/or irrigated agricultural land. Buildings, roads, landscaping, and/or crops would replace desert tortoise habitat. However, because desert tortoises are known to occur at low densities within the Covered Area, the likelihood of direct mortality of desert tortoises would be minimal.

5.3.6.1.2 Indirect Effects

Due to indirect effects arising from increased human presence, conversion of existing private lands to human uses along Meadow Valley Wash in the Covered Area could adversely affect desert tortoise.

Habitat fragmentation from development likely would impede movement of desert tortoise through the Covered Area. Habitat fragmentation is a major contributor to population declines of the desert tortoise (Berry and Burge 1984, Berry and Nicholson 1984, and Berry 1986). Individual desert tortoise may require more than 1.5 square miles of habitat and may make forays of more than 7 miles at a time (Berry 1986). In drought years, desert tortoise forage over even larger areas. Roads and urban areas form ban’iers to movement and tend to

create small, local populations which are more susceptible to extinction than large, connected ones (Wilcox and Murphy 1985).

Trash disposal in the newly developed area could adversely affect nearby desert tortoises. Unauthorized and authorized deposition of refuse occurs close to towns, cities, and settlements in remote, inaccessible areas. Turtles and tortoises are known to eat foreign objects, such as rocks, balloons, plastic, and other garbage (John Behler, Chairman of the Freshwater Turtle and Tortoise Group, Species Survival Commission, International Union for the Conservation of Nature, and New York Zoological Society, pers. comm; Karen Bjorndabl, pers. comm., as cited in the Desert Tortoise Recovery Plan, USFWS 1994). Such objects can become lodged in the gastrointestinal tract or entangle heads and legs, causing death. Objects such as metal foil and glass chips have been found in wild desert tortoise scat and tortoise entanglement with rubber bands and string has been observed Burge (1989).

The number of dogs could increase with an increase in human presence. The incidence of unrestrained domestic and/or feral dogs in tortoise habitat in and adjacent to the Development Area may subsequently increase. Dog attacks or predation on tortoises has been identified by the USFWS as an emerging problem that warrants attention (59 FR 5820, Boarman 2002). Preliminary results from a study in the Mojave Desert of California indicate a significantly higher percentage of tortoises with moderate to severe canid-like shell trauma within approximately two miles of settlements than tortoises at more remote sites (Demmon and Berry 2005). Others have also reported a higher incidence of canid-like shell damage at sites with feral dogs and dog packs (Bjurlin and Bissonette 2001, cited in Boarman 2002).

Anticipated increases in human use and habitation of the newly developed area may attract and concentrate predators such as ravens, coyotes, and kit fox, resulting in increased predation of desert tortoises. Predators are more likely to be attracted to the area if trash or other anthropogenic resources are present. Natural predation in undisturbed, healthy ecosystems is generally not a threat to the continued existence of the desert tortoise. However, predation rates may be altered when natural habitats are disturbed or modified.

Land conversion activities on up to approximately 564 acres along the Meadow Valley Wash within the Covered Area that create ground disturbance could cause increases in nonnative plants both inside and outside the newly developable area. Non- native plant species such as red brome (Bromus rubens), filaree (Erodium cicutarium), and split grass (Schismus arabicus) have been introduced as a result of grazing, increased due to disturbance by OHV, and ground disturbance associated with development. These species have become widely established in the Mojave Desert. Land managers and field scientists identified 1 16 species of alien plants in the Mojave and Colorado deserts (Brooks and Esque 2002). Desert tortoises have been found to prefer native vegetation over aliens (Jennings 1993). Alien annual plants in desert tortoise critical habitat in the western Mojave Desert were found to compose greater than 60 percent of the annual biomass (Brooks 1998). The reduction in quantity and quality of forage may stress tortoises and make them more susceptible to droughtand disease-related mortality (Jacobson et al. 1991, Brown et al. 1994).

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Coyote Springs Investment Planned Development Project …, Volume 2 (Google Books)

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Coyote Springs Investment Planned Development Project …, Volume 2

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The granting of an incidental take permit requires an analysis of direct and indirect potential effects of Covered Activities on Covered Species. This chapter evaluates the potential effects on Covered Species, as well as Evaluation Species. As defined in Chapter 3, Covered Species and Habitats, Covered Species include those for which sufficient information exists and for which adequate management prescriptions exist or can be easily defined and implemented. Evaluation Species are those requiring additional information or for which sufficient management prescriptions are unlikely to be developed and implemented sufficiently to support an application for an incidental take permit to be filed in 2007. Because Watch List Species would have a low potential for incidental take and coverage under the CSI MSHCP is not anticipated to be sought during the duration of the 40-year permit, no analysis of potential effects for these species is presented in this chapter.

Potential effects are evaluated for each Covered and Evaluation Species separately by the following Covered Activities:

I Community development and construction,

I Recreational facilities and open space,

I Utility infrastructure,

I Water supply infrastructure and management,

I Flood control structures development and maintenance (including storrnwater management), and

I Resource management features.

5.1.1 Tyg of Effect

Evaluation of effects is based on both the context (e.g., type of activity) and intensity (e.g., duration) of the action. Effects can be either “direct” or “indirect.” Both types of effects on Covered and Evaluation Species are analyzed in this chapter.

5.1.1.1 Direct Effects

Direct effects encompass the immediate, often obvious effect of the project activity on a species or its habitat (typically direct harm or harassment to individuals and/or habitat). Examples of potential direct effects are disturbance, injury, or mortality that may occur during construction or maintenance activities, including alterations to habitat.

5.1.1.2 Indirect Effects

Indirect effects are caused by or result from the project activity. They can occur later in time, but are still reasonably certain to occur. In contrast to direct effects, indirect effects can often be more subtle, and may affect species’ populations and habitat quality over an extended period of time, long after project activities have been completed. Indirect effects are of particular concern for long-lived species like the desert tortoise, because project-related effects may not become evident in individuals or populations until years later.

According to the HCP Handbook, indirect effects would result from “activities expected to affect species outside the HCP plan area or species inside the plan area but not otherwise directly covered by the terms of the HCP” (USFWS and NMFS 1996). Indirect effects also “must be reasonably foreseeable and a proximate consequence of the activities proposed under the HCP” (USFWS and NMF S 1996).

COYOTE SPRINGS INVESTMENT PLANNED DEVELOPMENT PROJECT

5.1.2 Critical Habitat

Effects to critical habitat have also been analyzed. In order to approve an incidental take permit, the “Services must ensure constituent elements of critical habitat will not be altered or destroyed by proposed activities to the extent that the survival and recovery of affected species would be appreciably reduced” (USFWS and NMF S 1996). In this analysis, potential effects to critical habitat were assessed for three species with designated critical habitat (desert tortoise, Virgin River chub, and southwestern willow flycatcher). However, no potential effect from the Covered Activities is anticipated for critical habitat of Virgin River chub or southwestern willow flycatcher. Critical habitat for these species is located outside the Muddy River basin.

5.1.3 Covered and Evaluation Species

Species with the potential to be affected directly or indirectly by the Covered Activities are listed in Table 5-1 below. These species were designated as Covered and Evaluation Species for this MSHCP through a prioritization process described in Appendix S: Species Selection Process.

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5.2 POTENTIAL EFFECTS BY ACTIVITY TO THE COVERED AND EVALUATION SPECIES

This section presents the analysis of potential effects for each Covered and Evaluation Species, organized by Covered Activity. Potential direct and indirect effects and effects to critical habitat are included in the analysis. In this evaluation of potential effects, the level of potential incidental take and related impacts expected to result from proposed project activities are presented for each of the Covered Species. These potential effects are then compared with proposed conservation measures (Chapter 6, Conservation Measures) to determine the level of incidental take for each of the Covered Species to be covered by the incidental take permit. This information is presented in Chapter 7, Expected Outcomes.

To aid in the analysis of potential effects, the use of surrogate distribution information on some of the species was useful. Based on information obtained from the SWReGAP habitat model, the range of several species would include the Covered Area. Because of the coarse level of these models, the exact location of suitable habitat for each species cannot be precisely identified. Instead, these models serve as a tool to estimate the potential areas appropriate for monitoring surveys. More information on the usefulness of this type of information can be found in Appendix S: Species Selection Process. As a result of the limitation associated with the existing information, the potential effects analysis for Evaluation Species is qualitative in nature. For banded Gila monster, a Covered Species, acres of potential habitat affected by the Covered Activities were assumed to be similar to the desert tortoise. Recent clearance surveys for desert tortoise in Clark County support this assumption (Chapter 3, Covered Species and Habitat). Table 5-2 summarizes the potential effects by all the Covered Activities on the Covered Species.

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No habitat for the Moapa dace occurs in ephemeral washes of the Covered Area; therefore, no direct effects would occur as a result of land development activities within the Development Area.

INDIRECT EFFECTS

Perennial aquatic habitat that would support Moapa dace is found approximately 17 miles downstream of the Development Area, where the Muddy and Warm Springs contribute to the perennial flow of the Muddy River. This habitat could potentially be indirectly affected by development and construction activities. Increases in impervious surfaces could result in changes in flood frequencies and intensities through reduced infiltration in the area surrounding the Pahranagat Wash, which could adversely affect Moapa dace habitat downstream. However, flood control measures, a separate Covered Activity, would address this concern through increased channel conveyance and retention basins. Therefore, no increase in flow intensities and/or frequencies would be expected from construction and development activities.

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COYOTE SPRINGS INVESTMENT PLANNED DEVELOPMENT PROJECT

Sedimentation of Moapa dace habitat downstream could also occur if sediment enters Pahranagat Wash via land clearing, deposit of fill in some ephemeral washes, and other ground disturbing activities. This could result in the low potential for indirect effects to the Muddy River during large storm events (100-year or greater), where Moapa dace habitat occurs. Because the Development Area is located approximately 17 miles from Moapa dace habitat, these potential indirect effects would be limited in scale. Continuous flow in the Pahranagat Wash incised ephemeral channel occurs only during very large storm events (100-year or greater),

and the additional sediment load may not be detectable in comparison with the sediment load from the entire Muddy River watershed.

5.2. 1.1.2 Virgin River Chub

DIRECT EFFECTS

No habitat for the Virgin River chub occurs in ephemeral washes of the Covered Area; therefore, no direct effects would occur as a result of land development activities within the Development Area.

INDIRECT EFFECTS

The nearest habitat that would support the Virgin River chub is in the Muddy River,5 approximately 17 miles downstream of the Development Area. Increases in impervious surfaces could result in changes in flood frequencies and intensities through reduced infiltration in the area surrounding the Pahranagat Wash, which could adversely affect Virgin River chub habitat downstream. However, flood control measures, a separate Covered Activity, would address this concern through increased channel conveyance and retention basins. Therefore, no increase in flow intensities and/or frequencies would be expected from construction and development activities.

Sedimentation of the Muddy River population of Virgin River chub habitat could occur from sediment entering Pahranagat Wash via land clearing, deposit of fill in some ephemeral washes, and other ground disturbing activities. However, the additional sediment load may not be detectable in comparison with the sediment load from the entire Muddy River watershed. Because of the distance from the Development Area to Virgin River chub habitat, these potential indirect effects would be limited in scale.

While the Muddy River provides habitat for the Virgin River chub, it has not been designated as critical habitat for the species. The nearest critical habitat is in the Virgin River, which is not affected by the Muddy River system, as they both separately flow into Lake Mead and the Colorado River. Therefore, no direct or indirect effects to critical habitat of the ESA-listed population of the Virgin River chub would occur.

5.2.1.1.3 Desert Tortoise

DIRECT EFFECTS

As described previously in Chapter 3, Covered Species and Habitat, we estimate tortoise density for the CSI project area in Lincoln County at based on the 2006-2007 clearance surveys density estimate. Extrapolation over 20,716 acres can be used to estimate that approximately 426 tortoises occur on CSI private lands in Lincoln County. This estimate provide an indication of the number of desert tortoises that could be directly affected by Community Development and Construction activities.

During construction activities, the potential for direct mortality of desert tortoises exists, either through hitting them aboveground or running over desert tortoises with heavy equipment. This could occur on up to

20,716 acres comprising the Development Area, which are designated critical habitat. The loss of up to 20,716 acres of critical habitat within the 427,900 acre Mormon Mesa CHU represents approximately

5 percent of the existing CHU. Large blocks of protected federal land make up most of the CHU, with several key areas (e.g., ACECs) managed specifically for desert tortoise.

5Critical habitat has been designated for the Virgin River chub in the parts of the Virgin River mainstem and floodplain from the confluence of Ash and La Verkin Creeks to Halfway Wash (above Lake Mead). No critical habitat has been designated in the Muddy River.

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POTENTIAL EFFECTS

Land development activities would eliminate up to approximately 20,716 acres of suitable desert tortoise habitat within the Development Area. This loss would be the result of conversion of land from desert scrub to human residential, commercial, recreational and light industrial use; buildings, roads, and landscaping would replace desert tortoise habitat.

Roads constructed in the Development Area could increase tortoise mortality in the Covered Area from increased vehicular traffic on roads and highways (i.e., US. Highway 93, State Route 168) as residents move into the CSI Development in Lincoln County. Roads have the effect of increasing tortoise mortality rates due to vehicle collisions. Tortoises are frequently killed or collected on freeways, paved highways and roads, and dirt roads, resulting in depletion of adjacent populations (e.g., Boarrnan et al. 1992). This may be more pronounced for juveniles, as they can be difficult to detect. Indeed, numbers of juvenile desert tortoises on permanent study plots in California were significantly lower adjacent to well-used dirt and paved roads (Berry and Turner 1984). Additionally, tortoise population densities are often depressed near paved roads/highways potentially due to road-related mortality. This effect has been observed at least within 0.5 mile of paved highways (Boarman et al. 1997).

Thus, it would be expected that desert tortoise population densities in the CSICL, which is located within the Covered Area to the east of the Development Area, would be depressed in numbers by the use of local roads created within the Development Area. Up to 111,000 residential dwelling units in the Development Area would result in a large number of vehicles traveling along these local roads on a daily basis. The total land to be included in the CSICL (approximately 13,767 acres) includes critical habitat for the desert tortoise. A portion of this habitat would also be affected by edge effects related to the addition of nearby paved roads and increased traffic.

INDIRECT EFFECTS

Due to indirect effects arising from increased human presence, conversion of the land to human uses in the Development Area could adversely impact desert tortoise and reduce the quality of critical habitat adjacent to the Development Area. The extent of critical habitat surrounding the Development Area that may be affected by indirect effects is not readily quantifiable.

Roads may result in indirect impacts to tortoise populations by increasing opportunities for human access, such as the collection (poaching) of tortoises for pets, food, or sport; release of diseased, captive tortoises into wild populations and the subsequent spread of disease; littering and illegal dumping; increased chance and

incidence of human-caused fire in tortoise habitat; and the spread of non-native, invasive weeds (Boarman 2002).

It should be noted that the adjacent lands are managed by BLM as ACECs and USFWS as refuges, ACECs, and wilderness areas and, therefore, are subject to activity restrictions. However, outside of these more rigidly protected lands are areas that have little to no restrictions in place, indirect effects from the community may be more widely observed. Within 65 miles (approximately a one hour drive) of the project area, there exist large expanses of BLM and USPS lands that are available for OHV use. If desert tortoises were to occur in these areas, which do not include critical habitat, the potential for direct mortality or injury would exist.

Noise from traffic may also negatively affect tortoise populations due to disruption of communication, change in behavior, and damage to the auditory system. Background noise has been shown to mask vocal signals essential for individual survival and reproductive success in other animals (e.g., Bailey and Morris 1986, Ehret and Gerhardt 1980). Desert tortoises are known to have hierarchical social interactions (Brattstrom 1974), are capable of hearing (Adrian et al. 1938, Patterson 1971, 1976), and communicate vocally (Campbell and Evans 1967, Patterson 1971, 1976). The masking effect of these sounds may significantly alter an individual’s ability to effectively communicate or respond in appropriate ways. The same holds true for incidental sounds made by approaching predators; masking of these sounds may reduce a desert tortoise’s ability to avoid capture by a predator.

Habitat fragmentation from development likely would impede movement of desert tortoise through the Development Area. Habitat fragmentation is a major contributor to population declines of the desert tortoise (Berry 1984, Berry and Burge 1984, Berry and Nicholson 1984). individual desert tortoise may require more than 1.5 square miles of habitat and may make forays of more than 7 miles at a time (Berry 1986). In drought

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COYOTE SPRINGS INVESTMENT PLANNED DEVELOPMENT PROJECT

years, desert tortoise forage over even larger areas. Roads and urban areas form barriers to movement and tend to create small, local populations which are more susceptible to extinction than large, connected ones (Wilcox and Murphy 1985). Habitat fragmentation from development likely would impede movement of desert tortoise through the Development Area. However, habitat fragmentation would be minimized through the proposed land configuration for reconfiguration process, as the Development Area maximizes habitat connectivity within nearby, federally controlled lands and the ACECs established for desert tortoise conservation would remain adjacent to undeveloped lands (the CSICL). The development area as it is proposed to be located in both the preferred alternative and Alternative 1 is along the only two paved roads in the Coyote Spring Valley: US. Highway 93 and State Route 168, which already fragment desert tortoise habitat. By locating the development area adjacent to the existing sources of habitat fragmentation, instead of being surrounded by undeveloped lands on all sides, both of the action alternatives would minimize the overall effect of habitat fragmentation from the project.

Trash disposal in the Development Area could adversely affect nearby desert tortoises. Unauthorized and authorized deposition of refuse occurs close to towns, cities, and settlements in remote, inaccessible areas. Turtles and tortoises are known to eat foreign objects, such as rocks, balloons, plastic, and other garbage (John Behler, Chairman of the Freshwater Turtle and Tortoise Group, Species Survival Commission, lntemational Union for the Conservation of Nature, and New York Zoological Society, pers. comm; Karen Bjomdabl, pers. comm. — as cited in the Desert Tortoise Recovery Plan, USFWS 1994). Such objects can become lodged in the gastrointestinal tract or entangle heads and legs, causing death. Objects such as metal foil and glass chips have been found in wild desert tortoise scat and tortoise entanglement with rubber bands and string has been observed Burge (1989).

The number of dogs could increase with an increase in human presence; thus, the incidence of unrestrained domestic and/or feral dogs in tortoise habitat in and adjacent to the Development Area may subsequently increase. Dog attacks or predation on tortoises has been identified by the USFWS as an emerging problem that warrants attention (59 I1 5820, Boarman 2002). Preliminary results from a study in the Mojave Desert of California indicate a significantly higher percentage of tortoises with moderate to severe canid-like shell trauma within approximately two miles of settlements than tortoises at more remote sites (Demmon and Berry 2005). Others have also reported a higher incidence of canid-like shell damage at sites with feral dogs and dog packs (Bjurlin and Bissonette 2001, cited in Boarman 2002).

Anticipated increases in human use and habitation of the Development Area may attract and concentrate predators such as ravens, coyotes, and kit fox, resulting in increased predation of desert tortoises. Predators are more likely to be attracted to the area if trash or other anthropogenic resources are present. Natural predation in undisturbed, healthy ecosystems is generally not a threat to the continued existence of the desert tortoise. However, predation rates may be altered when natural habitats are disturbed or modified.

The most important predators of desert tortoises at this time are the common raven and the coyote. The bestdocumented predator is the raven. Raven population increases seem to be due to increased food supplies, (e.g., road kills, landfills, trash, garbage dumps, agricultural developments). Because ravens make frequent use of food, water, and nest-site subsidies provided by humans, their population increases have been tied to an increase in food and water sources, such as landfills and septic ponds (Boarman and Berry 1995, USFWS 1994). Additionally, new sites for perches and nests (e.g., fence posts, power poles and towers, signs, buildings, bridges) may increase potential mortality of tortoises due to increased foraging advantages.

The collection of desert tortoise for pets, food, or use in cultural observances may increase on lands adjacent to and within the Development Area. Illegal collection is a major factor in the decline of the desert tortoise. People illegally collect desert tortoise for pets, food, and commercial trade. Some collect for medicinal or other cultural purposes (USFWS 1994). Almost one-half of tortoise with radio transmitters have been documented as poached or suspected of being poached from research sites (Berry 1990 as amended, Stewart 1991).

Well-meaning citizens may capture, transport, and release tortoises they find and perceive to be in harm‘s way. In addition to loss through capture, increased handling could contribute to the loss of unique, local characteristics through interbreeding and genetic mixing.

Upper respiratory diseases (URTD) in tortoises living in and near the Development Area could increase. Capture and release of tortoise could contribute to the spread of diseases such as URTD. By the early 1990’s,

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NDOW had documented several cases of URTD in tortoises inhabiting the areas proposed for inclusion in the Coyote Spring and Mormon Mesa ACECs (USFWS 1994); and URTD has been documented in both the Coyote Springs and Mormon Mesa permanent study plots (BLM 1998). URTD appears to be spreading and may have been introduced to wild tortoise populations through the release or escape of diseased, captive tortoises (Jacobson 1994, cited in USFWS 1994), something that is more likely to occur near an urban area (Boarman 2002). A high or increased prevalence of URTD in tortoise populations adjacent to urbanized areas or within suburban areas has been documented in several regions (Brown et al. 2005, Jones et al. 2005), although a direct cause-effect relationship has not been established (Boarman 2002). Pet desert tortoises would not be allowed in the Development Area and this may help to minimize this potential effect.

Evidence is mounting that desert tortoises are experiencing toxic effects and higher rates of mortality from one
or more elements or compounds, such as selenium, heavy metals, chlorinated hydrocarbons,
organophosphates, as well as nitro compounds and alkaloids in plants. In some cases, such chemicals occur
naturally or result from distribution or concentration through human-induced activities (USFWS 1994). While
research on the aforementioned subjects in desert tortoises is in preliminary stages, existing data are sufficient
to suggest that these sources of mortality may be important, especially when coupled with drought.

Levels of mercury in the livers of desert tortoises ill with URTD at the Desert Tortoise Natural Area were significantly higher than in desert tortoises from the Ivanpah Valley (eastern Mojave Desert) (Jacobson et al. 1991). The mercury levels in livers of Desert Tortoise Natural Area desert tortoises could be higher for natural reasons (e.g., naturally higher levels in soils and plants, or perhaps higher levels as a result of mining). Many attribute mercury levels to emissions from industrial activity in the area.

The Covered Activities include plans for future industrial development in specified areas of the Development Area. Toxic chemicals and substances could potentially be involved in construction practices (e.g., solvents used in painting). Use of toxic chemicals and substances could result in these substances entering the local environment and affecting nearby desert tortoise. Toxic chemicals and substances could also enter the local environment through run-off from roads, chemically-treated landscapes, and other sources typically found in urban environments.

Development activities within the 21,454-acre Development Area that create ground disturbance could cause
increases in non-native plants both inside and outside the Development Area. Non- native plant species such as
red brome (Bromus rubens), filaree (Erodium cicutarium), and split grass (Schismus arabicus) have been
introduced as a result of grazing, increased due to disturbance by OHV, and ground disturbance associated
with development. These species have become widely established in the Mojave Desert. Land managers and
field scientists identified 116 species of alien plants in the Mojave and Colorado deserts (Brooks and Esque
2002). Desert tortoises have been found to prefer native vegetation over non-natives (Jennings 1993). Non-
native annual plants in desert tortoise critical habitat in the western Mojave Desert were found to compose
greater than 60 percent of the annual biomass (Brooks 1998). The reduction in quantity and quality of forage
may stress tortoises and make them more susceptible to drought- and disease-related mortality (Jacobson et al.
1991, Brown et al. 1994).

In the Mojave Desert, the proliferation of non-native plant species has also contributed to an increase in fire frequency in desert tortoise habitat by providing sufficient fuel to carry fires, especially in the intershrub spaces that are mostly devoid of native vegetation (USFWS 1994, Brooks 1998, Brown and Minnich 1986). Indeed, over 500,000 acres of desert lands burned in the Mojave Desert in the 1980s. Thus, the potential for increases in non-native plants through ground disturbance within the Development Area could also result in increases in fire frequency in surrounding desert tortoise habitat.

Changes in plant communities caused by recurrent fire may negatively impact tortoises and tortoise populations through direct mortality and injury (e.g., Woodbury and Hardy 1948), as well as loss of forage species and shrubs that provide shelter and fragmentation of habitat (Brooks and Esque 2002, Esque et al. 2003).

Creosote bush is slow to re-sprout and germinate following intense fire (Brown and Minnich 1986). Loss of these shrubs and other vegetation, even temporarily, may change the thermal environment and increase exposure of tortoises to temperature extremes (Esque and Schwalbe 2002). Loss of forage, water, or shelter sites can result in nutritional deficiencies and decreased reproductive rates.

Invasive Species: What Everyone Needs to Know® (Extrait)

Texas Game and Fish – Volume 21 – Page 9books.google.com.ph › books

1963 – ‎Snippet view – ‎More editions
Believing the eggs to be aphrodisiac, hopeful people in this region will gulp as many as a dozen raw turtle eggs at a meal. Another danger the turtle faces is the hunger of wild dogs in Costa The book caught the interest of conservationists.

Feral housecats kill millions of native songbirds each
year, and roaming dogs threaten native mammal and reptile
populations. Escaped or released cage birds have often established populations, some of which have become invasive. For
example, the rose-ringed parakeet from Africa and Asia and
the South American monk parakeet have both established
invasive populations in Europe and North America. Both of
these parakeets threaten crops, and there is concern that the
rose-ringed parakeet will compete with native birds for nest
sites.

The failures have often been publicized, but there have also
been many successes—over a thousand of them worldwide—
and these tend not be very well-known. Perhaps the earliest
insect eradication was the elimination of tsetse flies from the
island of Principe in the Gulf of Guinea. The flies were introduced in cargo from Africa in 1825, bringing with them sleeping sickness that appeared 35 years later, ultimately reducing
the human population tenfold. A four-person team managed
to eradicate the fly (and the disease) completely between 1911
and 1914. In 1956, tsetse flies were again detected, and a large
scientific team was immediately dispatched to the island,
where they captured 66,894 flies in two months. Using traps,
insecticides, brush clearing, and hunting to reduce populations of feral pigs and dogs (alternate targets for the flies and
hosts for the sleeping sickness pathogen), they eradicated the
fly once again

Goats have also been
eradicated from Santiago Island, through ground hunting
with dogs, followed by aerial hunting and a modification of
the traditional Judas-animal technique

Sporting Magazine, Volume 10 (Google Books)

mon’r TO KILL DOGS TRESPASSING.

An action in which this point was involved was tried in the Sheriffs Small Debt Court at Cupar, in the County of Fife, during the last month. Mr. Raitt, of Carphin, had found John Andrews and another at work with five dogs and a ferret on the lands of Carphin. Mr. Raitt shot two of the dogs, and David Andrews, father of John, as the alleged owner of them, raised an action for 81. 6s. 8d. as the restricted worth of the dogs. Mr. Raitt acknowledged shooting the

dogs, but pleaded in defence that Andrews never had a licence to hunt; that the dogs were ke t for the unlawful purpose of poac ing, and were so employed when shot; and therefore the owner could not qualify damages. Andrews adduced -—Renwick, an apprentice in the British Linen Company’s Bank, who deposed that he knew the dogs, and, from his knowledge of such dogs for killing rabbits or rats, they were worth 4-1. or 51. each. He had ‘ven 6s. for a pup of the breed to avid Andrews.—Jame| Ferguson, hawker, in Cupar, knew the dogs, and had often hunted with them along with Andrews ,’ one was worth 41. and the other 31. for the purpose of killing rabbits. He had never seen a terrier sold, but had one for which he had been ofl’ered 205., and Andrews’l dogs were better than his—On Mr. Raitt’s part, Robert Miller, rat-killer ; in Cupar, said he knew the dogs, and valued one at 15s. the other at 11.; Andrews used them for killing rabbits, and was not a regular rat-catcher; a thorough good dog to a regular ratcatcher might be worth as much as 7l.—William Wilson, Town Officer, knew the dogs were kept by Andrews and his son for killing rabbits ,’ had seen rabbits in their possession, and in searching the house ; did not know the value of the dogs; tohim they would have been worth nothing, but to Andrews, for rabbits, or any sportsman, they might be worth a good death—Andrews then contended that he had proved the worth of the dogs to be such as to entitle him to the sum sought, and that it was no consequence whatever for what purpose they were kept by him.—The defender, Mr. Raitt, urged his lea that the purpose, poaching, for w ich they were kept was illegal, and consequently no damages could be founded, er at all events such damages as one could claim who was in the legal use of them when shot. He instanced the fact of Lord Chancellor Eldon’s refusing to protect Mr. Murray, of Albemarle-street, vainst the piracy of Byron’s .Don Juan, from the

reputed licentious nature of the work taking it out of the protection of the law. The Sheriff (who in Scotland is always alegal man), after stating the law, that no man was entitled to shoot the dogs of another on his lands though illegally employed, and after going over the evidence, found Mr. Raitt, the defender, liable in 51. 5a., as the value of the dogs ; and in a counter-action for damages for the trespass, found AndreWs 16s. 8d., and found no expenses due to either party. It is probable that Mr. Raitt was not aware of the late Act regarding trespass in Scotland, as by it Andrews couldhave been fined 51.16s.8d., being the maximum fine for trespass under the old Act. +

Country Life, Volume 97 (Google Books)

Ethel Ashton Edwards.

RAMBLERS AND GAME

ANOTHER aspect of public rights is raised . by the Ramblers’ Association’s claim that grouse shooting and deer stalking “should take second place to the health and recreation of the majority ” on uncultivated moorland. Access to mountains has been a thorny subject ever since 1888, when Mr., afterwards Lord, Bryce introduced the first Bill with this title, which reached the Statute Book in 1940. but subject to such limiting amendments that its original supporters finally opposed it. The 1940 Act does not in fact give access to mountains but enables application to be made to the Minister of Agriculture for leave of access to specified areas at specified seasons, making the applicant responsible for seeing that these limitations are observed and rendering their non-observance an act of trespass. The need for giving first place to public recreation where a conflict of interests arises would be more generally agreed if the Ramblers’ Association was less categorical in asserting that the public has a primordial right to wander at will over all uncultivated moorland and forest a point of common law by no means certain. During the past century the presetvation of game has itself come to be a form of cultivation, making much previously valueless land relatively productive both of income and food. The difficulty is that, with such a sensitive “crop” as grouse or deer, the mere presence of human beings within a wide circumference, unless moving with intimate knowledge of the ground, may eventually lead to its failure altogether, either by causing game to move elsewhere, discouraging breeding, or interfering (unwittingly) with its harvesting, in a drive or stalk. Ramblers tend not to admit this, but unless their right of access is accompanied by some acknowledgment of the rights of the species (that preceded both ramblers and landowners) to freedom from disturbance, they will gradually die out. Which would be a pity.

WOMEN ON THE FARM

THOFGH the vexed question of awarding gratuities to the Women’s Land Army does not depend upon it, the suggestion that after the war even- facility for agricultural training shall be given to the women who have served us so well during the production campaign stands or falls with the capacity of women foi effective work on the farm in peace-time.

He would be a bold man who ventured to be a-outspoken on the subject as is Frances Donald son in the current issue of Agriculture. Needlev. to sav she does not seek to belittle the part which the W.L.A. has played, or to deny that there are exceptional women who can do a manV work as well as a man. But she does say quite candidly that women, on the whole, lack Ok one absolutely essential quality for every skillcv. job on the farm—strength. And when she conies to ask, and answer, the question “Will women want to work on the land?” she boldh returns the answer “No.” There is clearh room for disagreement here, and one canni.i forget that long before the war women had proved themselves successful and efficient both in the dairy and in horticulture. Indeed the same issue of Agriculture contains a very interesting interview with a successful Cornish woman horticulturist who describes the opportunities of happiness and success fur women in horticulture.

“TRADITUM EST”

HE’D steal the cross off a donkey’s back ‘” The denunciation recalls the quaint fancy that the donkey acquired his witners stripes (which, with the black line down the back, form a cross) on the first Palm Sunday Will old superstitions of this kind retain then traditional currency in the countryside in an age of radio and better education? Enlightenment is to be welcomed but some of the fabE-, merit record before they are lost. How “local” is the notion (sometimes credited to the Cotswolds) that the death watch beetle was once a beautiful butterfly but suffered metamorphosis for mocking the Saviour by fluttering in his face on Good Friday? Still, it is said, the beetle seeks bv haunting churches to recover its lost grace. In the same class is the belief that the plaintive lapwings are possessed by the souls of those Jews who gloated over the Crucifixion. Storks .and swallows, however, have been claimed as birds of good omen because they were sorrowful watchers. The red breast of the robin (which to this day enjoys a peculiar immunitv from human interference) and the crossed mandibles of the crossbill were both held of old to have been acquired while their owners were trying to remove the nails from the Cross Mistletoe has been parasitic ever since it> damnation for having, when a healthy tree, provided the wood for the Cross: but. according to another superstition, the trembling of the aspen’s leaves i, caused by the perpetual homir that it performed that guilty service. Even now the Breton peasants refuse to eat blackberries—because they believe that tincrown of thorns was plaited from brambles.

A DIGEST OF DORSET

AS part of that process of self determination L by every communit\ of its planned future, noticed here last week regarding Guildford, Mr. Geoffrey Clark has sketched Dorset’s place in the national picture, for that county > Planning and Education Committee. His ten pages similarly state the fact that planning i* not a game for experts only, but for every inhabitant, including the schools. Dorset’s case to be regarded as neither an urban nor recreational, but a primarily agricultural society i^ applicable to many other counties, though to none perhaps so distinctively. The importance to the nation as a whole of the agricultural countryside’s way of life lies in the con-inuitv and equilibrium with which it redresses the less stable urban mentality, dyspeptic with nqvelties. But for Dorset to resolve to remain a predominantly agricultural society would not exclude urban or recreational influences, alreadv firmly established, nor the need for planned development. Hut that development would be directed to further its chosen destiny, not, as development usually means, industrialism and suburbanitv. It would aim at making Dorset 100 percent, efficient as an agricultural society, with suitable industries strengtheniiii: local economy, and the inspiring landscape as the background. In fact the programme for an agricultural county is just as urgent ami constructive as that for a con-urbation. but diametrically opposite—as it should be.

[graphic]
THE PIEBALD FOAL: PEMBROKE CASTLE, SOUTH WALES

A COUNTRYMAN’S NOTES

J. A. Brimble

AREMARK in a recent Note ofa^salmon sinking to the bottom after being shot by a shot-gun has brought a letter from a correspondent who states that freshly-killed fish do not sink, but float. As the writer is an angler of considerable experience I cannot think how it is he has spent so much uf his life on bank and boat without discovering that both salmon and trout when dead usually travel to the bottom very quickly and in a most disconcerting manner, though I am not disputing that after some days, when putrefaction sets in, thev come to the surface again. I suppose there is nothing to equal the celerity and dexterity with which the beautiful 2-lb, trout, when being washed in the river to display his lovely figure and colouring, will slip through the hands and, with nicely-timed glides, swerves and swoops, will evade the grasping lingers and go to the bottom, from which one may, or may not, be able to raise him with the landing-net.

* *
*

IHAVE obtained many demonstrations of this lamentable fact during my fishing life, and I suppose what has really fixed the matter in my mind indelibly is a terrible tragedy which occurred on Lough Melvin some years ago. We were rowing back to the Garrison end after a long and quite exceptional day spent drifting down the Leitrim shore when the wind, water and weather had been just right from the cast of the first fly, so that along the burden boards of the boat lay some thirty trout of that degree of excellence which only those from Lough Melvin attain. Two-thirds of the catch were die black, brown and silver sonaghan of the deep w ater, all about the one pound mark “vvid not an ounce between them,” and the other third the rather flamboyant crimson and gold gillaroo of the shallows, one or two of which would have turned the scale at 214 lb. It was a basket of trout such as occurs but rarely in the lifetime of any fisherman and, judging from

Major C. 8. J Alt VIM

results of recent years, I am beginning to wonder if such catches will ever happen again.

Some great brain—either that of the other rod or my own—evolved the idea that the fish would look brighter and fresher if washed, and so the whole catch was placed in the boat’s big landing-net and put over the side into the water. There came a heartrending scream, “The net’s broken—full speed astern; back water; hold her up!” But the boat was moving rapidly, and by the time she had been brought round and back to the site of the disaster, all that could be seen of that wonderful basket of trout was some thirty streaks of silver spiralling gracefully five fathoms deep in the peaty water, with another five fathoms to go.

It was one of those fishing tragedies about which one may say without exaggeration that “life was never the same again.”

*

SINCE writing the above I have crossexamined several brother anglers on the question as to whether dead salmon and trout sink or float if returned to the water, and none of them would seem to be very certain on the point. One quoted a case of a very poisonous effluent being allowed to flow into his stream from a factory and recounted how he had seen scores of his trout, which had only just died, floating down with the current, and not one of them so far as he could see sank to the bottom. He also told another story of a fine Itchen trout, which fell into the water after being knocked on the head, and which floated obligingly until retrieved with the landing-net.

I do not propose to recant everything that I have written, as the loss of that Melvin bag

lives vividly in my memory when other episodes concerning fish are blurred and unreliable. I think possibly the explanation is that the floating or sinking of dead trout depends on whether its air bladders have been squeezed and damaged so as to force the air out of them, or not. In nine cases out of ten, when the hook has been driven well home as it is almost invariably with the very lively and forthcoming Lough Melvin trout, one takes a firm grip of the body to detach the hook, and in these cases the fish will sink. On those other occasions— and how often they occur—when one finds the fly has come away immediately the trout is lifted up in the landing-net the bladders contain their full quota of air, and these fish will float if returned to the water; and the same of course applies to trout which have been poisoned.

• *
*

SINCE the early days of the inauguration of poultry funds in the fox-hunting world Hunt secretaries have been in the habit of complaining that the fox never by any chance takes an old or middle-aged hen, as the birds for which a claim is made are invariably purebred laying pullets—in other words the highestpriced stock to be found on the poultry farm. The imputation is obvious, but I think in many cases is unjust, as no one ever accuses the fox of lack of judgment, and he or she is quite clever enough to show discrimination, and pick out the most edible of the birds. On two separate occasions I have had a flock of a dozen or so five-month-old birds attacked by a fox at night, and in one raid the full complement of seven pullets were all killed and six cockerels left untouched, while in the second five pullets were slain and six cockerels spared. I may mention that in those days a cockerel, particularly a Leghorn, had a very low market value, though I am not certain if even a fox can be credited with a knowledge of ruling prices. The point is that a pullet is a far more tender and flavourous bird than a cockerel of the same age, but as the pullet is ordained for higher things

than the dinner-table it is seldom one has the

opportunity of reminding oneself of the fact.

* *
*

TT is not my intention to re-open the age-old X dispute as to whether the Hunt poultry fund is abused or not, but to point out that, if a bereaved poultryman wishes to be dishonest and exploit his disaster, he can make more money by proving that the raid was carried out, not by a fox, but by two dogs belonging to different owners. According to a judgment given in a case recently in a Midland court if the plaintiff succeeds in proving that both dogs took part in the killing each defendant dogowner is liable, not for half the damage as one would expect, but for all of it— in other words the poultryman is compensated for double the number of birds that he has lost!

This may be the law, but it does not make sense, and the only way in which a dog-owner can get square is by allowing his dog to kill all the poultryman’s tame rabbits, if by any chance he should keep them. This, as has been proved by another recent decision in an Appeal

Court, is quite in order as the Dogs Act of 1906 makes the dog-owner liable for the killing or injuring of domestic animals, a term which embraces poultry, but tame rabbits are not included under the definition “cattle.” So here the dog is held to be following his common instinct, and all is well for the dog and his

WHILE on the topic of the law being a “hass” I might mention the impending fate of our village, or to be more exact town, common. This, like so many village greens, is in the heart of the town and bounded on three sides by houses, while on the fourth there is an arm of the river. For generations it has been regarded as one of the town’s open spaces: animals graze on it, children play on it, visiting circuses pitch their tents on it, and until recently the Home Guard paraded on it. The lord of the manor cannot fence it, or prevent the public from using it in any way, but it transpires, according to the laws governing common land, that he can extract gravel from it, and this he proposes to do. In other words, though the law prevents him from interfering with any of the

rights and free access to the common which the public possess, he is legally entitled to obliterate it for all time as, owing to the whole area being little more than six feet above the river level, there will be a deep lake instead of a village green when the gravel extraction is completed. I have an idea that possibly our very inefficient laws regarding common land may require that the area be levelled and the turf replaced, after minerals have been extracted, but, as this is not the “Sudd” region of the Upper Nile, it is unlikely that sods of turf will flourish on the surface of a pond six feet deep.

As, however, our town is now surrounded on three sides by a chain of similar lagoons, owing to universal and indiscriminate gravel extraction, this will not matter so much as it might in other areas. It only remains now for some landowner to discover that he may dig gravel from the main street for our town to call itself the Hampshire Venice, for the taxiowners to sell their cars and buy gondolas, and for the inhabitants to learn to play the mandolin and guitar. What a pity it is that our Ministry of Town and Country Planning has only the powers to plan.

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THERE are not fewer than 225 species of turtles and they are found in all countries and in their surrounding seas, except in those areas where W inters are severe. They vary greatly in size.

Some of the smaller turtles when full-grown will scarcely cover your hand, whereas the marine leatherback turtle mav have a shell eight feet long and weigh three quarters of a ton. Even the leatherback, however, must take second place to a prehistoric turtle which, according to fossil remains, reached a length of 12 ft. and probably weighed over a ton.

The names turtle, terrapin and tortoise are used for different members of the order chelonia, but herpetologists are not agreed on how these names should be applied. Throughout this article I have therefore used the one word turtle to describe whatever chelonian I am writing about.

Turtles are hatched from eggs, but they have several differences from those of birds. Most of them are elliptical and the shells are like parchment and can be dented permanently like old rubber balls. But the common snapping turtle lays an egg which is remarkably like a

[graphic]
table-tennis ball, even to its ability to bounce when dropped on a hard surface!

The mortality rate among turtles, especially when young, is very high, but a compensating factor is the large number of eggs laid by a female. This applies chiefly to the sea turtles. Numbers vary greatly with the different species, but frequently three or four clutches of 20 or more eggs may be

laid in a season The green turtle has been proved to lay seven clutches at intervals of about two weeks with an average of about a hundred to a clutch. One turtle laid 176 eggs in one clutch.

The actual laying of the eggs, although it occupies only an hour or so, is the most critical time in the female turtle’s life. The sea turtle

[graphic]
on a beach or foreshore; the desert turtle in a sandy waste; the river species on a bank; each digs out a nest, deposits the eggs, carefully smoothes away traces of her toil and then, her duty to posterity done, leaves her eggs for ever. So intent is the female on this task that even blows seldom divert her from her purpose. The heat of the sun hatches the eggs.

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Country Life, Volume 97

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(Right) YOUNG COMMON MUD TURTLE —VERY AGGRESSIVE FOR ITS SIZE

(Below) A 50-lb. ALLIGATOR SNAPPING TURTLE WHICH CAN CARRY A MAN

[graphic]
Although young turtles are equipped with an egg-tooth similar to a baby bird, this does not appear to play so large a part in releasing them as does the rupturing of the shell due to the rapid absorption of the water. Great as is the mortality of the young it would be still greater were it not for their remarkable ability to hide, and their no less remarkable independence of food, which prevents the necessity of their foraging far afield. Young turtles can live for months on the food absorbed by their digestive tracts while they were still in their eggs.

Once over the hazardous stage of infancy a turtle is in the running for a century or even a double century. Specimens of the common box turtle, whose shell rarely exceeds six inches, have still been alive after more than forty years in captivity, and there is reasonable evidence that some of them reach the century.

According to Clifford H. Pope, to whose fine book Turtles of the U.S. and Canada (1939) I am indebted for some of the information in this article, the turtle positively known to have lived the longest survived at least one hundred and fifty-two years on Mauritius where it was accidentally killed in 1918. Other authorities consider there is good evidence that an Aldabra turtle lived two hundred and fifty years and possibly longer. This turtle was mentioned in a document drawn up in 1810 as then being one hundred and fifty years old and it lived well into this century. It should be pointed out that size is not necessarily a true index of age. A large turtle in captivity was observed to increase its weight from 29 to 350 pounds in seven years!

Turtles are very tenacious of life. Raymond L. Ditmars tells of finding a turtle, apparently in the best of health, whose healed shell showed signs of having once been cut nearly in two. A Blanding’s turtle, which is little larger than a man’s hand, was once found with its shell showing signs of having been crushed by a horse. The carapace was smashed down an inch or more, yet was otherwise perfectly healed, and its owner appeared quite normal.

Professor Roy L. Abbott says one of his pet snapping turtles, weighing about twenty pounds, endured the assaults of an eight-foot alligator which vigorously but vainly tried to crush it. But I do not think the largest and most powerful alligators would have much difficulty in overcoming such a small turtle, for the strong jaws of some alligators are said to crush the shells of even large turtles easily.

Turtles have been frozen solid for twentyfour hours and yet have survived. They have been put in lethal chambers and gassed for an hour and emerged none the worse. Some species have been forcibly submerged in water for two and a half hours and when released have appeared to be quite normal.

Pope says: “There is no danger of starvation for an animal ble to survive months without food even when normally active;

ind the greatly slowed-up bodily processes during hibernation ensure survival on the available supply of fat. Nor does fear of suffocation disturb the sleeper’s dreams, because the small amount of oxygen required to keep the low fires burning is readily secured even in submerged mud or under water itself. It must be remembered that cold water holds more oxygen in solution than warm. ^Estivation, a state of suspended animation somewhat similar to hibernation, tides turtles and other animals over periods of dry heat.”

A turtle’s main defence against a world which, on the whole, is very hostile is, of course, its shell. Safely ensconced in this strong-point it is safe from all but its strongest enemies. Incidentally, not all turtles have the traditional hard shell. There are several comparatively soft-shelled species. One of these found in Africa has a novel form of defence. The top of its shell is pliable and leathery. When disturbed the turtle takes refuge among shelving rocks, takes a deep breath, thus expanding the shell, and jams itself safely in its rock-bound hide-out.

Although most turtles are well protected by their shelly covering the motto of some of them appears to be “The best defence is a

[graphic]
THE

SERRATED LOWER JAW AND NOTCHES OF THE FLORIDA RED-BELLIED

TURTLE

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strong attack.” For such proverbially sluggish creatures the viciousness of some species is remarkable. The snapping turtle is well-named; when aroused it will deliberately charge to the attack and should its powerful jaws clamp down on any part of its foe’s anatomy it will hang on with the tenacity of a bull-dog. This turtle’s angry lunges with its head sometimes are so energetic that, if it misses its object, its whole body is lifted from the ground.

This action is not so unusual as it may sound, for there is another turtle, the ornate box turtle, which feeds on grasshoppers and has actually been seen to stretch its neck, jump and catch one in flight!

A word must be said here about the speed of turtles. Before the war a ” National Terrapin Derby ” was held in the United States each year. Turtles were placed in the centre of a circle with a radius of 75 ft. The first turtle to cross the circumference was the winner. This form of racing was necessary because turtles could not be guaranteed to travel in the required direction. The average speed of the winner in these race meetings was about a foot per second or two-thirds of a mile an hour.

While such a speed may be representative of a large number of turtles it is by no means an indication of the speed of the fastest species. The spineless soft-shelled turtle can cover the ground so fast that some writers have averred that it can outrun a mail. While this may well be an exaggeration, it gives some idea of this turtle’s surprising agility.

In water this soft-shelled turtle is also very fast. Alvin R. Cahn says he has seen one of these turtles in a large tank pursue and catch a brook trout by sheer superior agility! Neither turtle nor trout would be able to reach maximum speed in a tank—unless it was of exceptional length and it should not, of course, be assumed that in open water the turtle could overtake a fish whose maximum speed is in the region of twenty miles an hour. The fastest turtles are almost certainly found among the marine species, which are much more adapted for swimming than any fresh-water species.

A turtle has no true teeth, but a number of species have sharp serrations and projections t>f the horny edges of the jaws and sometimes of the ridges inside the mouth. With these false teeth even a medium-sized turtle can sever a broomstick as easily as a donkey chops a carrot. The map turtle, which weighs only three or four pounds, lives on molluscs, which means that it must be capable of easily crushing their tough shells.

An 18-in.-long snapping turtle in the London Zoo once attacked its keeper and,

[graphic][merged small]
grabbing the sole of his boot, tore it clean away from the upper. The alligator snapping turtle, which may weigh a hundred pounds, can bite lumps out of one-inch boards, or walk about without any appreciable effort with a man weighing considerably more than itself on its back.

In controlled experiments turtles have exhibited surprising intelligence. In a famous series of expeiintents D. B. Casteel used tame turtles. They were faced with two boxes. If they entered one they received a mild electric shock and if the other they were rewarded with food. The boxes were variously decorated and Casteel ensured, by frequently shifting the boxes, that it was only by learning and remembering what the markings on the boxes meant that the turtles made their choices.

By these experiments it was found that the turtles learned to discriminate between black vertical lines eight and two mm. wide. One exceptional turtle learned to distinguish between a box painted with black lines three mm. wide and another with lines only two mm. wide. When the tests were repeated after an interval of six weeks one turtle remembered perfectly and another, after an interval of twelve weeks, showed only a little falling off in accuracy.

The common box turtle also appears to

[graphic][merged small]
have a good memory. John T. Nichols says that he frequentlv dug for worms or shook caterpillars from a tree growing in his turtles’ enclosure. He found that they soon learned to associate either action with food and approached for the anticipated feast. Another man said his wood turtle learnt to beg for food by waving a leg or walking round in a circle.

Turtles have given rise to one of the most unusual methods of angling practised anywhere in the world: fishing by means of captive remoras or sucking-fish. In particular the natives living on the shores of the Torres Strait, between Australia and New Guinea fish for turtles in this way.

The remora has one of its dorsal fins modified to form a lamellated disc on the top of its head. With this sucker it attaches itself to sharks and other fish and travels with them, picking up scraps of food left over by its host. The natives capture a remora and make a hole at the base of the tail-fin. A long cord i-. then inserted through the hole and tied.

The natives then put to sea and when a turtle is sighted the remora, with cord attached, is thrown overboard. What follows has been well described by John Jardine, who spent several years among the natives of this area. He says:

The sucking-fish was put into the water. At first it swam lazily about, apparently recovering the strength which it had lost by removal from its native element; but presently it swam slowly in the direction of the turtle, till out of sight: in a very short time the line was rapidly carried out. there was ;i jerk, and the turtle was fast. The line was handled gently for two or three minutes, the steersman causing the canoe to follow the course of the turtle with great dexterity. It was soon exhausted ami hauled up to the canoe. It was a small turtle weighing a little under 401b., but the sucking-fish adhered so tenaciously to it, as to raise it from the ground, when held up by the tail, and this some mm after being taken out of the water. … I have seen turtles weighing more than 1001b.. which Imn’ been taken in the manner described.

Dr. E. W. Gudger, who wrote at length on this use of the remora in The American Xaluralisl for September-October, and November-Decent ber, 1919, considers from experiments which have been made that a fairlv large remora, say 30 ins. long, is capable of exerting an adhesive force of between fifty and a hundred pounds. As two hundred and fiftv pound fish have been caught on lines with breaking strains under 501b. it can readily be understood how two hundred and three hundred pound turtles can be captured when once a remora has got a firm grip.

(The photograplis illustrating tins artiili tin by Mark Aloonev, Jr., Zoological Society v) Philadelphia.)

THE FUTURE OF TOPIARY

By GEOFFREY CLAYTON

OUR trees rise in cones, globes and pyramids. We see the marks of the scissors -on every plant and bush.” Thus the Spectator, ever a lively critic of contemporary activities, in the early years of the eighteenth century. And, indeed, there was considerable reason for it; from a graceful fashion topiary had, in the reign of William and Mary, assumed the pitch of a grotesque craze. The effect in some quarters was pantomimic—regular collections of vegetable sculpture, reducing the whole art to an absurdity. “Adam and Eve in Yew,” scoffed the Guardian of the same period, quoting from a sale catalogue, “St. George in Box; a green dragon and a pair of giants.”

Nearly a century earlier Bacon himself had criticised the craze that was even then sweeping Kngland. “I for my part do not like images cut out in juniper or other garden stuff: thev be for children,” he wrote in his famous essay on gardens.

What of the future? The years immediately proceeding the war saw a marked return to popularity of topiary in this country. There was a growing appreciation of the charm, in more tempered form, of the trimming of shrubs and hedges, as the increasing exhibits at I^ondon shows gave evidence. There is nothing to suggest that this pre-war interest will not be revived when hostilities cease. Even in 1939 the demand for shrubs greatly exceeded the home supply and many thousands of specimens were imported from the Continent. Here there must he a difficulty for some time, as the majority came from Holland.

It is not only the question of charm, but also that of its harmonisation with present-day surroundings which is likely to ensure the continued popularity of topiary. Its formal lines and geometrical designs are in keeping with the severe note running through much of modern architecture. For small suburban “front” gardens, so many of them paved over, limited examples of topiary are ideal. Such artificial

constructions as roof-gardens lend themselves admirably to the art. Again, an advantage appealing to many in these days of labour shortage and limited leisure is that, when once installed, the specimens call for minimum effort in upkeep. Twice-a-year trimming is all that is necessary and the trees are extremely hardy and immune from disease.

Some argue that topiary treatment is against Nature; if this is so, then surely a clipped lawn, a formal bed—indeed, any restriction of natural growth must lie open to the same accusation.

Many of the complaints are doubtless levelled against those who invariably exaggerate anything they tackle and overload their gardens out of all proportion to the size of them. At Nottingham there is a remarkable example of topiary in the shape of a life-sized horse, clipped from hawthorn bushes; but it is unlikely that the average garden of to-day would be able to support a specimen of this size. It must be remembered that topiary work stands out very prominently; thus considerable care is needed in the placing of specimens, and it is not a bad idea to make the first experiments with trees in tubs. Again, nothing looks worse than badly clipped or ill-shaped examples; on the other hand, yew archways, well-chosen shrubs in formal gardens and about pools can be highly attractive.

The accepted materials for topiary work are box, holly, privet, hornbeam and, of course, the favourite yew, which has been described as the most beautiful natural evergreen of the western world. Irrespective of their age, box and yew transplant excellently and, being very hardy, stand up to the extremes of British weather.

The diffident amateur usually prefers to buy his specimens ready-clipped, and in normal times he will find a wide choice of designs awaiting him—not only birds and such animals as squirrels, foxes and hounds, but he may indulge his fancy in spirals, balls, cones, pyramids and many other shapes.

Some of the old specimens were most elaborate, one example showing, on a heavv square “stage” of box, a man, completely hatted and costumed, prodding, with a long pole, a dancing bear, while behind him gambolled a dog. To-day, simple designs are more in keeping with modern ideas. Good specimens, of course, are not inexpensive, for they take many years to grow; a shaped box of some 3 feet in height is probably 20 years old.

Those of more adventurous temperament find the growing of their own specimens rather fascinating and not so difficult as some might suppose.

The small trees suitable for topiary are obtainable from those specialists who also stock the wire frames, superseding the older wooden “formers,” upon which the growing foliage is trained. Let your man know the design you have in mind and he will choose the suitable tree; the ultimate pattern is usually decided in the first place by the natural shape of the growing shrub.

The method is simple enough. The frame is placed in position when the bush has made good growth and the new shoots are accurately trained along the wires, which the compact foliage will quickly conceal. The possessor of a hedge of yew or box can add to its beauty by placing a frame upon the top. A few years may elapse before this is completely covered, but the final result will be. exceedingly effective.

While holly is best clipped in June, midAugust to half way through September is the time for shrubs. Care must be taken with box, which is prone to damage by frost; and frost on designs with large horizontal surfaces may cause temporary setbacks. So it is well that specimens grown in tubs should be frequently turned to encourage density of growth.

Watching the gradual shaping of specimens is fascinating; and there is every prospect that the future will see no lessening of interest in this charming art.

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[graphic][merged small][merged small][graphic]
ONE OF A SET OF MARGATE
VIGNETTES (Length 1 inch)

SINCE Major A. G. Wade unearthed from ‘a family scrap-book some examples of pictorial note-paper, published in Correspondence, August 18, 1944, many readers have kindly sent us further specimens. Some of these have been illustrated in Correspondence from time to time, but our temporary collection has by now assumed such a range that it is time to reproduce a representative selection and to draw some general conclusions on the origin, duration, and purpose of the vogue.

It was evidently a fashionable innovation following upon the institution of the Penny Post in 1840. Significantly the earliest example submitted to us is dated 1841, and is hotly topical in subject, namely the burning of the Great Store House at the Tower of London on October 31 of that year. It is described as engraved and published by Crosland and Co., Fenchurch Street. Other early examples are Lincoln and Grasmere (published by Harwood, London), respectively 1841 and 1845.

It is clear that the idea was the forerunner of the picture post-card. This accounts for the predominance among the subjects of watering places, holiday resorts, and beautyspots. In one case the writer of a letter on August 31, 1860, leaves us in no doubt of the fact by marking the picture, in an original way, to indicate the exact place of her sojourn: The print at the top of my letter is a representation of Wellington Crescent where we lodged at Ramsgate. I have marked the house where we lodged with a x.

The latest example received is a technically inferior representation, in colour, of the Mansion House, London, with the beginning of a letter in French dated Mercredi 6 Septembre 1874.

By then non-pictorial post-cards were beginning to come into use, initiated by the Austrian Government in 1869. For many years official post-cards only were permitted, private cards at the %d. rate not being admitted in Britain till 1894. This was the origin of picture post-cards, which, during the next decade, enjoyed an immense vogue. In 1899 the Daily News stated that “every method has been placed in the service of the picture post-card industry and much has been produced which in its artistic execution may lay claim to lasting value.” In 1900 an exhibition of picture postcards was held in Paris containing 150,000 examples.

An interval would seem, therefore, to have elapsed between the decline in the note-paper vogue and its final eclipse by the picture postcard in the ‘nineties. This may be accounted for by its having become demode”, the exquisite steel engravings of the ‘fifties seeming oldfashioned, and by the practice having been vulgarised by commercial firms adopting it to illustrate their shop or factory on bill-heads.

[graphic][merged small][graphic][merged small][graphic][merged small]
ROYAL CRESCENT, RATH
(F. Curtis, Bath)

Most of the examples that one remembers of this, now also nearly extinct, form of advertising give the impression of having been crudelv executed in the ‘seventies or ‘eighties—or in the debased styles of those decades.

Thus we have the rough limits of the notepaper vogue as 1840-70.

The headings of this period are, almost without exception, beautifully executed steel engravings. In a majority of cases they were re-used from illustrated topographical books, such as J. P. N’eale’s Views of Seals (first six volumes 1816-23, second series 1824-29), from which the plate of Sezincote, Gloucestershire, was taken. The precedent was evidently followed in the making of special vignettes of country houses, since one of Felbrigg Hall. Norfolk, is dated July 4, 1856 (illustrated October 6, 1944), and a view in sepia of Redhouse, Ardee, Co. Louth, is dated 1854. This seems to be an amateur effort, since Mr. H. F. McClintock who sends it says that the drawing was by Lady Clermont (nee Ladv Louisa Butler), sister-in-law of Chichester Fortescue, Lord Carlingford, the then owner of Redhouse. The most enterprising publishers of note-paper were evidently Rock and Co. who numbered their plates. That of Felbrigg is No. 3166; Abbev Crescent, Torquay (1865), No. 5328. Another prolific publisher was J. Harwood, whose plates are dated from 1841. Ix>cal publishers joined in. The view of Royal Crescent, Bath, was published by F. Curtis, 4, Quiet Street, Bath; Beck of Leamington, Syckelmoore of Maidstone, and Percy of Margate, and no doubt many others, published paper with local views. The name of the artist is not generally given except when the plate was derived from a book. These comprise the finest examples technically and are often by leading men such as Pickering (Newby Bridge) or Thomas Allom (Watergate. Chester.)

An entirely’ different line was exploited by the enterprising Messrs. Rock with a series of delightful vignettes appealing to tenderer sentiments than the topographical. There is a whole sequence for young ladies, with beautifully drawn groups representing the declension of love—”I love,” “They love” (a mother with children), “I have loved” (a grandmother consoling a damsel); and another appealing to fond parents, such as “Polkanette,” “The dear children are home for the holidays.” and the return of the Prodigal Son. This latter was engraved bv Newman and Barclay of Watling Street, London, and published by G. Batters of Nottingham. Allied to these are two sheets with embossed frame containing respectively a stanza by Milton entitled DevoUdness, and the musical score of the Lancers Quadrilles (Rock and Co.). But with them we are passing beyond

the scope of this note.

C. H.

[graphic]
[graphic]
[blocks in formation]
REDHOUSE, ARDEE, Co. LOUTH (1854)

[graphic]
LINCOLN. (J. and F. Harwood. 1841) THE TOWER OF LONDON. (Cropland and Co. 1841)

[graphic]
NEWBY BRIDGE, BY G. PICKERING WATERGATE STREET, CHESTER, BY T. ALLOM

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« PreviousContinue »

THE TURTLE IN A HOSTILE WORLD
By
FRANK W. LANE
(Left) NORTHERN DIAMOND-BACK
TERRAPIN
(Below) YOUNG TROOST’S TURTLE
THERE are not fewer than 225 species of turtles and they are found in all countries and in their surrounding seas, except in those areas where W inters are severe. They vary greatly in size.
Some of the smaller turtles when full-grown will scarcely cover your hand, whereas the marine leatherback turtle mav have a shell eight feet long and weigh three quarters of a
ton. Even the leatherback, however, must take second place to a prehistoric turtle which, according to fossil remains, reached a length of 12 ft. and probably weighed over a ton.
The names turtle, terrapin and tortoise are used for different members of the order chelonia, but herpetologists are not agreed on how these names should be applied. Throughout this article I have therefore used the one word turtle to describe whatever chelonian I am writing about.
Turtles are hatched from eggs, but they have several differences from those of birds. Most of them are elliptical and the shells are like parchment and can be dented permanently like old rubber balls. But the common snapping turtle lays an egg which is remarkably like a
table-tennis ball, even to its ability to bounce when dropped on a hard surface !
The mortality rate among turtles, especially when young, is very high, but a
compensating factor is the large number of eggs laid by a
female. This applies chiefly to the sea turtles. Numbers vary greatly with the different species, but frequently three or four clutches of 20 or more eggs may be laid in a season The green turtle has been proved to lay seven clutches at intervals of about two weeks with an average of about a
hundred to a clutch. One turtle laid 176 eggs in one clutch. The actual laying of the eggs, although it occupies only an hour or so, is the most critical time in the female turtle’s life. The sea turtle
on a beach or foreshore; the desert turtle in a
sandy waste ; the river species on a bank ; each digs out a nest, deposits the eggs, carefully smoothes away traces of her toil and then, her duty to posterity done, leaves her eggs for ever. So intent is the female on this task that even blows seldom divert her from her purpose. The heat of the sun hatches the eggs.
COUNTRY LIFE — MARCH 30, 1945 547
(Right) YOUNG COMMON MUD TURTLE
—VERY AGGRESSIVE FOR ITS SIZE
(Below) A 50-lb. ALLIGATOR SNAPPING
TURTLE WHICH CAN CARRY A MAN
Although young turtles are equipped with an egg-tooth similar to a baby bird, this does not appear to play so large a part in releasing them as does the rupturing of the shell due to the rapid absorption of the water. Great as is the mortality of the young it would be still greater were it not for their remarkable ability to hide, and their no less remarkable independence of food, which prevents the necessity of their foraging far afield. Young turtles can live for months on the food absorbed by their digestive tracts while they were still in their eggs.
Once over the hazardous stage of infancy a turtle is in the running for a century or even a double century. Specimens of the common box turtle, whose shell rarely exceeds six inches, have still been alive after more than forty years in captivity, and there is reasonable evidence that some of them reach the century.
According to Clifford H. Pope, to whose fine book Turtles of the U.S. and Canada (1939) I am indebted for some of the information in this article, the turtle positively known to have lived the longest survived at least one hundred and fifty-two years on Mauritius where it was accident ally killed in 1918. Other authorities consider there is good evidence that an Aldabra turtle lived two hundred and fifty years and possibly longer. This turtle was mentioned in a docu ment drawn up in 1810 as then being one hundred and fifty years old and it lived well into this century. It should be pointed out that size is not necessarily a true index of age. A
large turtle in captivity was observed to increase its weight from 29 to 350 pounds in seven years !
Turtles are very tenacious of life. Raymond L. Ditmars tells of finding a turtle, apparently in the best of health, whose healed shell showed signs of having once been cut nearly in two. A Blanding’s turtle, which is little larger than a man’s hand, was once found with its shell showing signs of having been crushed by a
horse. The carapace was smashed down an inch or more, yet was other wise perfectly healed, and its owner appeared quite normal.
Professor Roy L. Abbott says one of his pet snapping turtles, weighing about twenty pounds, endured the assaults of an eight-foot alligator which vigorously but vainly tried to crush it. But I do not think the largest and most powerful alligators would have much difficulty in over coming such a small turtle, for the strong jaws of some alligators are said to crush the shells of even large turtles easily.
Turtles have been frozen solid for twenty- four hours and yet have survived. They have been put in lethal chambers and gassed for an hour and emerged none the worse. Some species have been forcibly submerged in water for two and a half hours and when released have appeared to be quite normal.
Pope says : “There is no danger of starvation for an animal ble to survive months without food even when normally active; ind the greatly slowed-up bodily processes during hibernation ensure survival on the available supply of fat. Nor does fear of suffocation disturb the sleeper’s dreams, because the small amount of oxygen required to keep the low fires burning is readily secured even in submerged mud or under water itself. It must be remembered that cold water holds more oxygen in solution than warm. ^Estivation, a state of suspended animation somewhat similar to hibernation, tides turtles and other animals over periods of dry heat.”
A turtle’s main defence against a world which, on the whole, is very hostile is, of course, its shell. Safely ensconced in this strong-point it is safe from all but its strongest enemies. Incidentally, not all turtles have the traditional hard shell. There are several comparatively soft-shelled species. One of these found in Africa has a novel form of defence. The top of its shell is pliable and leathery. When disturbed the turtle takes refuge among shelving rocks, takes a deep breath, thus expanding the shell, and jams itself safely in its rock-bound hide-out.
Although most turtles are well protected by their shelly covering the motto of some of them appears to be “The best defence is a
THE SERRATED LOWER JAW AND NOTCHES OF THE FLORIDA RED-BELLIED
TURTLE
COUNTRY LIFE— MARCH 30. 1945 548
strong attack.” For such proverbially sluggish creatures the viciousness of some species is remarkable. The snapping turtle is well-named ;
when aroused it will deliberately charge to the attack and should its powerful jaws clamp down on any part of its foe’s anatomy it will hang on with the tenacity of a bull-dog. This turtle’s angry lunges with its head sometimes are so energetic that, if it misses its object, its whole body is lifted from the ground.
This action is not so unusual as it may sound, for there is another turtle, the ornate box turtle, which feeds on grasshoppers and has actually been seen to stretch its neck, jump and catch one in flight !
A word must be said here about the speed of turtles. Before the war a ” National Terrapin Derby ” was held in the United States each year. Turtles were placed in the centre of a circle with a radius of 75 ft. The first turtle to cross the circumference was the winner. This form of racing was necessary because turtles could not be guaranteed to travel in the required direction. The average speed of the winner in these race meetings was about a foot per second or two-thirds of a mile an hour.
While such a speed may be representative of a large number of turtles it is by no means an indication of the speed of the fastest species. The spineless soft-shelled turtle can cover the ground so fast that some writers have averred that it can outrun a mail. While this may well be an exaggeration, it gives some idea of this turtle’s surprising agility.
In water this soft-shelled turtle is also very fast. Alvin R. Cahn says he has seen one of these turtles in a large tank pursue and catch a brook trout by sheer superior agility !
Neither turtle nor trout would be able to reach maximum speed in a tank—unless it was of ex ceptional length and it should not, of course, be assumed that in open water the turtle could overtake a fish whose maximum speed is in the region of twenty miles an hour. The fastest turtles are almost certainly found among the marine species, which are much more adapted for swimming than any fresh-water species.
A turtle has no true teeth, but a number of species have sharp serrations and projections t>f the horny edges of the jaws and sometimes of the ridges inside the mouth. With these false teeth even a medium-sized turtle can sever a
broomstick as easily as a donkey chops a carrot. The map turtle, which weighs only three or four pounds, lives on molluscs, which means that it must be capable of easily crushing their tough shells.
An 18-in.-long snapping turtle in the London Zoo once attacked its keeper and,
FEMALE ATLANTIC LOGGERHEAD TURTLE
grabbing the sole of his boot, tore it clean away from the upper. The alligator snapping turtle, which may weigh a hundred pounds, can bite lumps out of one-inch boards, or walk about without any appreciable effort with a man weighing considerably more than itself on its back.
In controlled experiments turtles have exhibited surprising intelligence. In a famous series of expei intents D. B. Casteel used tame turtles. They were faced with two boxes. If they entered one they received a
mild electric shock and if the other they were rewarded with food. The boxes were variously decorated and Casteel ensured, by frequently shifting the boxes, that it was only by learning and remembering what the markings on the boxes meant that the turtles made their choices.
By these experiments it was found that the turtles learned to discriminate between black vertical lines eight and two mm. wide. One exceptional turtle learned to distinguish between a box painted with black lines three mm. wide and another with lines only two mm. wide. When the tests were repeated after an interval of six weeks one turtle remembered perfectly and another, after an interval of twelve weeks, showed only a little falling off in accuracy.
The common box turtle also appears to
MALE FLORIDA TURTLE, WHOSE CLAWS ARE SOME THREE TIMES
THE LENGTH OF THE FEMALE’S
have a good memory. John T. Nichols says that he frequentlv dug for worms or shook cater pillars from a tree growing in his turtles’ en closure. He found that they soon learned to associate either action with food and approached for the anticipated feast. Another man said his wood turtle learnt to beg for food by waving a leg or walking round in a circle.
Turtles have given rise to one of the most unusual methods of angling practised anywhere in the world : fishing by means of captive remoras or sucking-fish. In particular the natives living on the shores of the Torres Strait, between Australia and New Guinea fish for turtles in this way.
The remora has one of its dorsal fins modified to form a lamellated disc on the top of its head. With this sucker it attaches itself to sharks and other fish and travels with them, picking up scraps of food left over by its host. The natives capture a remora and make a
hole at the base of the tail-fin. A long cord i-. then inserted through the hole and tied.
The natives then put to sea and when a
turtle is sighted the remora, with cord attached, is thrown overboard. What follows has been well described by John Jardine, who spent several years among the natives of this area. He says :
The sucking-fish was put into the water. At first it swam lazily about, apparently recovering the strength which it had lost by removal from its native element; but presently it swam slowly in the direc tion of the turtle, till out of sight : in a very short time the line was rapidly carried out. there was ;i jerk, and the turtle was fast. The line was handled gently for two or three minutes, the steersman causing the canoe to follow the course of the turtle with great dexterity. It was soon exhausted ami hauled up to the canoe. It was a small turtle weighing a little under 401b., but the sucking-fish adhered so tenaciously to it, as to raise it from the ground, when held up by the tail, and this some mm after being taken out of the water. … I have seen turtles weighing more than 1001b.. which Imn’ been taken in the manner described.
Dr. E. W. Gudger, who wrote at length on this use of the remora in The American Xaluralisl for September-October, and November- Decent ber, 1919, considers from experiments which have been made that a fairlv large remora, say 30 ins. long, is capable of exerting an adhesive force of between fifty and a hundred pounds. As two hundred and fiftv pound fish have been caught on lines with breaking strains under 501b. it can readily be understood how two hundred and three hundred pound turtles can be captured when once a remora has got a firm grip.
(The photograplis illustrating tins artiili tin by Mark Aloonev, Jr., Zoological Society v) Philadelphia.)

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Table 1. Fate of nests in harvested and non-harvested sectors of the beach.

October (%) November (Z) December (%)

Harv Non-harv. Harv. Non-harv. Harv. Non-harv. Fresh Nests 21.2 49.9 29.9 20 14.2 24.5 Rotten Nests <! 50.1 25.1 67.8 68 45.5 Cooked Nests 78.8 <! 20.1 6.1 10.7 ×1 Developing nests – – 24.9 6.1 7.1 30

Ostional. Poaching activity is also higher during the beginning and the end of the season, when fewer rangers are hired for control. Even though this pattern proves that protection by community hired rangers does have a positive effect, a considerable amount of poaching is also recorded directly in front of the community (Pueblo). In both Nancite and Ostional, Cornelius et al. (1991) had found a higher proportion of hatched nests in areas that were frequently washed by incoming tides. We also found this in our experimental harvesting regime sectors. One of the areas, in which no harvesting was allowed, had an estuary behind it that broke into the ocean during the wet season. This area produced a higher number of hatchlings/ m” than all the other experimental areas. The non-harvested areas also had a greater density of fresh nests per square meter (0.8) compared to that of harvested areas (0.7). Management Options. Harvesting must be confined to the arribada areas of the beach during the first 36 hours, and stronger measures taken against poaching. Guards should be posted strategically at the south end of the beach where a large number of solitary nests are laid and poaching is greatest. Educational programs in the community against poaching should be implemented, and stronger sanctions must be imposed by the Ostional Development Association. Nest fate and hatchling production is obviously greatly influenced by environmental and physical factors. Unfortunately because of our small sample size and short duration of study, we could not come to any definitive conclusion on a comparison of the results for hatchling production in

harvested and non-harvested areas. Methods must be developed to collect data over a long time span.

Acknowledgements The authors would like to thank the Lucile Packard Foundation for it’s kind support, which permitted the participation of intern students Aaron Russell and Shyamoli Mehta to this event. A special thanks to Todd Steiner of the Sea Turtle Restoration Project, the Asociación PRETOMA of Costa Rica, and to the Ostional Development Association, for providing the economic and logistic support to make this project possible.

References

Alvarado, M.A. and J. Ballestero. 1985. Ostional, Costa Rica: An example of a sea turtle conservation strategy and social welfare. In Proc. International Wildlife Congress. Hotel Herradura, Costa Rica, September 1995.

Castro, J.C., 1986. Contribución de lastortugas lora solitarias (Lepidochelys olivacea Eschsholtz) en el mantenimiento de las poblaciones de esta especie. Licenciatura de Tesis. Universidad de Costa Rica. San José. 41 p.

Cornelius, S.E., Alvarado, M., Castro, J.C., del Valle, M.M., and Robinson, D.C. 1991. Management of olive ridley sea turtles (Lepidochelys olivacea) nesting at Playas Nancite and Ostional, Costa Rica. In: Neotropical Wildlife Use and Conservation, ed. J.G. Robinson and K.H. Redford.; 111-135; Univ. Chicago Press, Chicago and London

Can the Olive Ridley Turtles in Orissa, India Be Saved

A Review of the Scientific Facts Available
BivaSH PANDAV AND B. C. CHOUDHURY

Wildlife Institute Of India, P.O. Box #18, Chandrabani, Dehradun 248 001, U.P., India;

Olive ridley turtles, Lepidochelys olivacea, nest in low densities all along the eastern coast of India. However, the most important nesting beaches lie in Orissa, where the mass nesting occurs. The olive ridley turtle is well known for its annual mass nesting or arribada, when several thousand turtles migrate to the breeding ground to mate and nest simultaneously. The 480km Orissa coast harbors three such mass nesting beaches. These are the Gahirmatha rookery near the mouth of rivers Brahmani and Baitarani along the northern Orissa coast, the rookery near the mouth of river

E-mail: Pandavb @ Wii. Gov. In Devi located 100 km south of Gahirmatha, and the Rushikulya rookery located 320 km south of Gahirmatha near the mouth of river Rushikulya along the southern Orissa coast. A significant portion of world’s olive ridley population that migrates every winter to the Indian coastal waters nests at these three rookeries. The Gahirmatha beach was the first of Orissa’s nesting beaches to be made known to the scientific community during the mid-1970s by the FAO/UNDP crocodile project (Bustard 1976). Substantial nesting has been recorded at this site with over 100,000 turtles in most years and over 600,000 turtles in peak years (Dash and Kar 1990). Due to a cyclonic storm and beach erosion, the Gahirmatha beach was considerably reduced in size when a 3 km long spit broke away from the mainland in 1989, reducing the 10 km nesting beach to a 3 km island. From 1990 the arribada continued in this island and the last arribada recorded here was in 1996. Since 1997 this 3 km long island has further been fragmented into two parts and has been greatly reduced in length, width and height. Where as the average beach width was 140 m in 1996, it was reduced to only 60 m in 1997. Reduction in beach height also resulted in frequent inundation of nesting ground. While 83% of the tracks monitored (n=800) in 1996 resulted in nests, only 23% (n=1990) monitored during 1997 and 1998 resulted in nests, thus indicating unsuitability of beach conditions for the turtles to nest. The rookery near the mouth of river Devi was discovered in 1981 (Kar 1982) and was then completely forgotten by the scientific and conservation community. Since then much of the nesting area at this rookery has been altered by a Casuarina (tree) plantation and the nesting population has shown a considerable reduction in number (Pandav et al. 1994). The Rushikulya rookery was discovered in March 1994 (Pandav et al. 1994 a & b). Since 1994, olive ridleys have been nesting en-masse at this rookery with considerable fluctuations in the number of nesting females from 60,000 in 1995 to 8,000 in 1998. All five species of sea turtles that occur in India (including the olive ridley) are legally protected. They are included in Schedule I of the Indian Wildlife Protection Act (1972), as well as in Appendix I of Convention of International Trade in Endangered Species of Wild Flora and Fauna (CITES) that prohibits trade in turtle products by signatory countries. The mass nesting beach at Gahirmatha is a part of the Bhitarkanika Wildlife Sanctuary. The coastal waters off Gahirmatha were declared a marine sanctuary in 1997. The coastal waters off Devi and Rushikulya rookeries have been declared a no-fishing zone during the turtle breeding season. Despite the legal protection given to the sea turtles, the sea turtle population migrating to the coastal waters off Orissa has been declining in recent years. The death of several thousand adult breeding individuals in Orissa each year has become a major concern of the national and international community. The biggest cause of mortality is the incidental capture of adult turtles in trawling nets. Uncontrolled shrimp trawling in areas of high sea turtle concentration has resulted in heavy mortality of adult sea turtles during the last decade. Dash and Kar (1990) reported the stranding of 4,682 adult olive ridleys at Gahirmatha rookery between September 1978 and May 1983. In 1993, during a six-month survey by Wildlife Institute of India (WII), 5,400 dead olive ridleys were found washed ashore along the 480 km Orissa coast (Pandav et al. 1997). Since then more than 30,000 dead adult olive ridleys have been documented in Orissa (Pandav and Choudhury 1999). Mortality due to illegal near shore trawling and gill netting

has been increasing each year. It reached a record high in 1998 with 13,500 turtles found along 282 of the 480 km coastline (Pandav and Choudhury 1999), hence, the actual number of dead turtles washed ashore the Orissa coast could have been much higher. A second major cause of disturbance is artificial lighting along the coastline. Developmental activities such as establishment of a missile test range and construction of a major port near Gahirmatha and mushrooming growth of aquaculture farms and chemical industries near Rushikulya rookery have resulted in increased lighting near the nesting beaches. Human consumption of sea turtle eggs and meat is minimal in Orissa. However, heavy predation on sea turtle nests by feral dogs and jackals take place at Rushikulya rookery after mass nesting. Estimates show that almost 2530% of the eggs laid during an arribada are predated at Rushikulya rookery. The planting of Casuarina trees in some of the prime nesting grounds has further restricted the nesting space available. In addition, Casuarina trees with their thick litter renders the beach unsuitable for nesting turtles. The first step towards solving these problems is strict enforcement of the ban on mechanized fishing in near shore areas and in areas of high sea turtle concentrations. The Government of Orissa has declared the coastal waters off Gahirmatha a marine sanctuary and the coastal waters off the other two rookeries as closed areas. Besides this, the Orissa Marine Fishing Regulation Act of 1983 prevents any kind of mechanized fishing within 5 km of the shoreline. However, the enforcing agencies, the Forest Department and State Fisheries Department, lack the infrastructural facilities to enforce the ban on fishing in these areas. The concerned agencies should be provided with adequate sea going vessels and personnel for strict enforcement of these bans. The use of turtle excluder devices (TEDs) should be made mandatory for trawlers operating in the coastal waters beyond 5 km from the shoreline. However, use of TEDs alone will not bring down the turtle mortality because turtles are also caught and killed in gill nets and TEDs can not be used in gill nets. Therefore, strict enforcement of the existing law on no fishing zones along with TEDs in other fishing zones seems to be the best answer to reduce turtle mortality. A major step towards saving this population would be giving protected area status to the sea turtle nesting beaches as well as the coastal waters having high sea turtle concentration. Of the three nesting beaches in Orissa, only Gahirmatha and its coastal waters are legally protected. The nesting beaches at Devi and Rushikulya rookeries lack any kind of protected area status, thus making them vulnerable to anthropogenic disturbances. The tagging studies by WII (Pandav and Choudhury, unpublished data) have revealed the movement of turtles between these three rookeries and have demonstrated that turtles use more than one rookery for nesting during a season. This implies that turtles nesting off the coast of Orissa may be part of a single population, meaning that turtles at all three rookeries are equally important. Further, if the nesting beach at Gahirmatha continues to decline due to geographical factors, these turtles may nest at other rookeries and it is important that these alternate nesting beaches are “turtle friendly’. Thus protection of all three rookeries is extremely crucial for the survival of turtles in Orissa.

Acknowledgements
The data presented here were collected as part of Wildlife
Institute of India’s sea turtle research program in Orissa.
We thank the Packard Foundation and the Barbara Delano
Foundation, USA for providing travel grants to participate
in the symposium.

References

Bustard, H.R. 1976. World’s largest sea turtle rookery? Tiger Paper, 3:3.

Dash, M.C. and C.S. Kar. 1990. The turtle paradise – Gahirmatha. Interprint, New Delhi, 295 pages.

Kar, C.S. 1982. Discovery of second mass nesting ground of the Pacific olive ridley sea turtles (Lepidochelys olivacea) in Orissa, India. Tiger Paper, 9(1):6-7. Pandav, B. and B.C. Choudhury. 1999. An update on the mortality of olive ridley sea turtle in Orissa, India. Marine Turtle Newsletter, No. 83, pp. 10-12. Pandav, B, B.C. Choudhury and C.S. Kar. 1994 a. A status survey of olive ridley sea turtle (Lepidochelys olivacea) and their nesting beaches along the Orissa coast, India. Wildlife Institute of India, Dehradun, July 1994. Pandav, B., B.C. Choudhury and C.S. Kar. 1994 b. Discovery of a new sea turtle rookery along Orissa coast, India. Marine Turtle Newsletter, No. 67, pp. 15-16. Pandav, B, B.C. Choudhury and C.S. Kar. 1997. Mortality of olive ridley sea turtle (Lepidochelys olivacea) due to incidental capture in fishing nets along Orissa coast, India. Oryx, Vol. 31, No. 1, pp. 32-36.

Possible Threats to and Conservation Measures for the Nesting Olive Ridley

Populations, Lepidochelys olivacea, at Andhra Pradesh Coastline, India P.S. RAJA SEKHAR

Abstract Olive ridley sea turtles, Lepidochelys olivacea, found in the Indian Ocean and its bay islands are highly vulnerable from various threats. At Gahirmatha in Orissa state, India, the olive ridleys have their largest rookery (mass nesting). Every year around February, the breeding populations migrate from the Indian Ocean to the mass nesting sites after travelling from the coastal waters of Tamilnadu and Andhra Pradesh. Even though these migratory populations are protected under Schedule I of the Indian Wildlife (Protection) Act, 1972, their exploitation is continuing in the coastal villages of Andhra Pradesh. Live turtles are captured incidentally in courtship activity or subjected to strandings of nesting turtles for meat, shell and calipee. Other possible threats identified in the region are human interference to their nesting habitats, nests and hatchlings, due to major construction works and artificial illumination on the beaches. In every breeding season (November to March) it was estimated that from 2000 to 3000 live turtles of breeding stock are subjected to indiscriminate exploitation and as many carcasses (dead turtles > 2 per km) on coastline due to trawl fishing and instant mortality. Besides live turtles, freshly laid nests are predated by jackals, foxes and domestic dogs and are also excavated by beachcombers, resulting in 90% losses. To prevent these possible threats, conservation programs were initiated to reduce the mortality of nesting turtles, and to protect the nests, eggs and hatchlings. Also a management plan was formulated for the development of important nesting habitats and feeding grounds of olive ridleys in this region.

Dept. of Environmental Sciences, Andhra University, Visakhapatnam – 530 003. INDIA.

Introduction

Of the world’s seven species of sea turtles, five species: the green turtle (Chelonia mydas); loggerhead (Caretta caretta); hawksbill (Eretnochelys imbricata); leatherback (Dermochelys coriacea) and the olive ridley (Lepidochelys olivacea) are distributed in the Indian Ocean and placed in Schedule I of the Indian Wildlife (Protection) Act, 1972. These species are also listed in Appendix I of the Convention on International Trade in Endangered species of wild fauna and flora (CITES, 1975). All the five species nest on the coasts of the Indian Ocean and its Bay Islands, while the olive ridleys have their largest (mass) nesting site at Gahirmatha of Orissa state in Northern Indian Ocean (Kar, 1980).

In winter months (January to March) olive ridleys migrating from the Indian Ocean to the coasts of Orissa for mass nesting (arribada) pass through the coastal waters of Tamilnadu and Andhra Pradesh. During migration these breeding populations are utilizing the nearby suitable habitats to lay their nests sporadically, along the coastline of Andhra Pradesh (Raja Sekhar, 1987). These migratory turtles are exploited by the local people for meat, shell and calipee, also the nests, eggs, and hatchlings subject to over predation by canine predators. Apart from biotic interferences, the developmental activities and intensive shrimp fishing along the coastline cause threats to the survival of olive ridleys in the region.

Study Area
The coastline between Kalingapatnam (Vamsadhara

River) in the north and Kakinada (Godavari River) in the

south is an important area. As a migratory corridor for olive ridleys, it has been selected for the present study. These coastal areas have different shore conditions ranging from rocky to shallow sandy shores with several rivers entering into the North Indian Ocean (Bay of Bengal). There are 53 villages on the coastline (population around 6,3,000) most of which belongs to fishing tribes. A total of 600 to 700 trawls operate along the coastline and 2000 to 3000 of traditional catamarans also operate from the coastal villages. Major industries, fishing harbours and shipping ports are located at the coasts of Visakhapatnam and Kakinada (Fig.1).

Observations Survey work has been conducted along this coastline during winter months (December – March) in 1996-97 and 1997-98. A major part of the survey was made on foot with the assistance of natives of the region when required. The status of these breeding turtles and possible threats to these nesting turtles were determined based on: • Human interference (Exploitation of breeding turtles). * Disturbances (Human and Predatory) to the nesting turtles, nests and hatchlings. * Incidental catches of migratory turtles. * Coastal developmental activities and marine pollution.

Human Interference (Exploitation of Live Turtles): The olive ridleys were captured during courtship or on shore during nesting activity and brought to villages for trade or personal consumption. These turtles were turned on their backs for up to 3 to 4 days in the hot sun before slaughter and sale in nearby weekly markets. During the period 1968 female olive ridleys (85.00%) were caught from courtship activity; 280 were captured (12.00%) on shore during their nesting activity and 45 turtles are subjected (2.00%) to stranding accidentally trapped in fishing nets spread on the shoreline. Some times canine predators (jackal and hyena) attacked the nesting turtles and killed them on shore and 22 of such evidences (1.00%) were recorded during the study period (Table 1).

Human and Predatory Disturbances: Domestic dogs and predators like foxes, Vulphus bengalensis, jackal, Canis aureus, hyena, Hyaena striata preyed upon the freshly laid nests accounting for 43.58% of the disturbances; these same animals preyed upon the nests at later stages for 3.42% of disturbances before hatchling (middle of incubation). Newly emerged hatchlings fall prey to crows, owls, white-bellied sea eagle, and ghost crabs. Freshly laid nests excavated by beachcombers accounted 954 nests for personal consumption or for sale (53.00%) in local markets (Table 2).

Incidental Catches and Accidental Mortality: The fishing activity was intensive all along the coast from River Godavari at Kakinada to Vamsadhara river of Kalingapatnam. For deep sea fishing 600 to 700 trawls were extensively used in the port areas of Visakhapatnam and Kakinada and Kalingapatnam, with gill and drag nets for shrimp catches. Many of the migratory turtles are accidentally trapped in gill

or dragnets, then wash ashore as dead carcasses. The density of carcasses was 4 per km at Godavari river mouth and >2 per km for the remaining coastline. There was a total of 926 carcasses in 1996-97 and 1158 during 1997-98. Kakinada coasts had the highest percentage (35.17%) of carcasses, Visakhapatnam had 30.90%, followed by Kalingapatnam with 18.00, and Pentakota with 15.93% respectively (Table 3). Coastal Development and Pollution Threats: In recent times the coastline of Andhra Pradesh is subjected to major developmental activities for setting of Industries, Road formations, Brackish water Shrimp farming, Agriculture and Commercial plantations. At the major nesting beaches (Godavaririverand at the Vamsadhararivermouths) placement of permanent nets for intensive seed collection (average density of 25-30/km) prevents the turtles from nesting. The other potential threats to the nesting habitats include human settlements nearer to shore line with an average

Table 1. Exploitation of nesting olive ridleys for meat, shell and calipee during 1996-1998.

Type of exploitation Study period 1996-97 1997-98 Total (%)

Turtles caught during courtship activity

948 1020 1968 (85.00) Caught while nesting

170 110 280 (1200) Trapped in nets on shoreline (strandings)

25 20 45 (2.00) Nesting turtles killed by dogs or predators

9 12 22 (1.00)

Table 2. Nest predation during 1996-1998.

Type of disturbance 1996-1997 1997-98 Total (%)
Human excavated nests

442 512 954 (53.00) Nests disturbed by predators (freshly laid nests)

363 420 783 (43.58) Nests disturbed at the time of hatching by domestic dogs/

predators 24 36 60(3.42)

Table 3. Number of carcasses found near major port areas 1996-1998.

Coastline area Dead Turtles Total 90 on Shore

1996-97 1997-98 Kakinada (Godavari River) 342 391 733 35.17 Pentakota 134 198 332 15.93 Visakhapatnam 326 3.18 644 30.90 Kalingapatnam (Vamsadhara River)

124 251 375 18:00 Total for the period 926 1158 2089

density varied from 200 to 400 per km. Pollution from nearby industries causes severe threat to marine environment at Kakinada and Visakhapatnam coastline (Table 4).

Discussion The Andhra Pradesh coastline is a migratory route or pathway for the olive ridleys to approach Gahirmatha beaches in Orissa state, where the largest “arribada’ was reported by Bustard (1976). It is most likely that a good number of turtles sporadically nest along the coastline of Northern Andhra between Godavari River mouth to Vamsadhara River. Frazier (1980) described various conditions of exploitation of sea turtles in the Indian Ocean and explained the reasons for subsistence economy of local inhabitants. Subsistence pattern of hunting for the olive ridleys was reported along the coasts of Orissa and West Bengal (Das and Kar 1986). Howeversuch large scale commercial exploitation was not intensified in the Andhra Pradesh coastline. Incidental catches of turtles in the trawl nets, poaching of nesting turtles and destruction of nests were intensive all along the coastline, not only removing the turtles but severely limiting their reproduction. In spite of several protection measures (Wildlife Protection Act, 1972) sea turtles are intensively subjected to over exploitation for their meat, shell, eggs, and calipee, all along the coastline by the subsistence economy. Apart from biotic interference the breeding habitats of these turtles are faced with severe threats from beach erosion, sand mining, formation of roads, encroachments and to a larger extent marine water pollution. Pollution sources from nearby industries, mostly of untreated or semi-treated effluents from the Nagarjuna and Godavari fertilizer plants and the discharge of hot waters (30-40°C) from NTPC Gas Based Power Project (GBPP) at Kakinada Bay cause synergistic effects to the marine coastal environment and threaten the Godavari mangroves

which are an important breeding and feeding habitat to olive ridleys. Oil drilling sites nearer to Hope Island and Sacramento shoals cause long-term detrimental effects to the nesting habitats. Other possible threats are from the increasing rate of human settlements, conversion of coastal habitats for aquaculture, and industrial pollution to coastal areas nearer to the nesting habitats. To mitigate these possible threats the following programs were initiated for the conservation of olive ridley sea turtles along the coastline. 1. Subsistence hunting can be avoided through intensive education programs in all 53 fishing villages of the study area to bring awareness of the importance of sea turtles. 2. Use of TEDs (Turtle Excluder Devise): There are around 600-700 shrimp fishing trawls operating from Visakhapatnam and Kakinada Port. TEDs should be introduced progressively after teaching boat owners about the importance of sea turtles. Mandatory implementation may be necessary. 3. Protection of sea turtle nests “In situ’ from the areas where the nests are likely to be poached or disturbed, or other threatening factors and survey of turtle nesting sites in the remaining coastline. 4. Strict implementation of the Wildlife Protection Act of 1972 and severe punishment for the commercial exploiters of sea turtles and their eggs. Declare Sacramento and Hope Islands near Kakinada, Andhra Pradesh as a sea turtle sanctuary and ban all fishing and other activities that are detrimental to the turtles and their nesting habitats.

Acknowledgements
I express my sincere gratitude to the Packard
Foundation, USA for travel assistance. I take this
opportunity to acknowledge Ms. Marydele Donnelly
Regional Chair, Travel Committee Asia and Pacific and the

Table 4. Possible threats to the olive ridley sea turtle nesting habitats along the coastline of Andhra Pradesh

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A discussion on the quality of water is included in the report, Mt. Hood Study “Ground water” by H. R. Sweet and F. G. Lissner. The indication 15 that water quality standards are not being met in all cases under the present level of

activity. This means the current cost of protecting water quality is below the level required to meet the criteria.

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Percent of TTETHETTTTTTETEE* Plots Plots — 7.5 l.l l2.2 — l9.7 25 ll.7 — 20.6

Mountain hemlock (Tsuga mertensiana)/ 15.6 2.2 2l.l
Pacific silver fir/rhododendron75eargrass.

Associated species: Douglas-fir, lodge

pole pine (Pinus contorta), big huckle

berry. Found at elevations of about

3700-3850 feet on steep midslopes pre

dominantly on the west side of Mt. Hood.

This type is thought to be a result of
sandy soils.

[graphic]
Mountain hemlock/big huckleberry/bear- 25.9 7l.6 7.0 grass. Associated species: Pacific

silver fir, noble fir (Abies rocera),
vanilla leaf (Achlys triphyllal. This

is the predominant subalpine forest type
found at elevations of about 4575-4675 feet
on both the east and west sides* of Mt. Hood.

* “Eastside” denotes the area that drains the Hood River and its tributaries; “westside” indicates the area that drains into the Sandy River and its tributaries.

Note: Communities that are titled “western hemlock” are named so because of the large number of hemlock seedlings found in

them that will eventually replace the Douglas-fir presently dominating the stands if no disturbance takes place.

The following is a partial list of plant species considered endangered or threatened that are thought to have a probability of occurrence in the Mt. Hood Planning Unit. (Smithsonian Institute l974)

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EXHIBIT P

Wildlife Assessment

Environmental Impacts- The most critical impact to wildlife is the continuing increase in the human population. This will result in the loss of the outstanding wildlife diversity through harassment and destruction of natural habitat systems via an invasion of residential developments, transportation systems, plus other associated facilities and activities which accompany increasing human population.

Major ecological elements detrimentally impacted by the increasing human population are: Ecotonal diversity _lj, vertical vegetative layering lj, hydroseres,

snag habitat 1] plus harassment 2/ which in turn affects animal population survival 1].

Closely related to the human population increase and harassment is the increasing problem of free ranging dogs and cats. In the planning unit there are three major critical and detrimental impacts resulting from dogs and cats, i.e.,

l) wildlife, 2) human health, and 3) agricultural-damage to livestock.

l- Wlldllfe- Impacts to wildlife are especially severe in winter and during periods of reproductive activity. Free ranging dogs (summer and winter) especially in high residential areas of the planning unit exceed five free ranging dogs observed per visit by forestvisitors3/ Numerous dog attacks on game and non-game animals have been reported—by land managers in the planning unit. Reports of dogs killing deer in the Nildwood area have been recorded. Several studies have been conducted which reflect impacts to wildlife. For example, in l972 it was estimated that dogs in North Carolina killed three times more deer than did bobcats.§/ Other research has shown that probably the most serious predator on deer is the domestic dog.lQ/ Studies have also shown there is an increase in free ranging d8? activities during the daylight hours when weather conditions are cool._ Areas of the planning unit where free ranging dog occurrence is highest is usually well shaded and/or in the upper elevations where the atmospheric temperature is relatively cool. Field observations made on the planning unit and the times wildlife attacks by dogs have been recorded shows that dogs appear to be active most of the day. Hence, wildlife probably receives dog pressure, not only at night, but during the daylight hours as well.

Another impact to wildlife is the loss of genetic integrity and natural predator-prey relationships of wildlife populations. Dogs and coyotes will interbreed. Also, it has been suggested that dogs (true dogs or coyote-dog hybrids) could replace the ecological niche of coyotes, wolves. and/or fox.2/ with the tremendous interest and increase in wildlife viewin in Oregon and the world (see existing statement-wildlife and reference f5? a loss of part of the “wild kingdom“ to hybridism and replacement is something land managers and decision makers should consider.

2. Human health. Research has pointed out a serious public health hazard from free ranging dogs and cats. This results from bites, disease transmission, and environmental pollution. It is greater than from rats.ll/ For example, in T973, 3500 tons of fecal raterial and 9.5 million gallons of urine were excreted daily by dogs in the United States.lZ/ In the city

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of Portland alone dogs generate approximately 6000 tons of fecal material in a single year.1§/ The number of humans being bitten by free ranging dogs and cats increases annually. Also, diseases being transmitted by free ranging dogs and cats are also on the increase.

3. Agriculture-damage to livestock. As one of the goals of the planning unit was to recognize farming as a critical resource, it is important to deal with all ramifications of this goal. To relate impacts of free ranging dogs on livestock in rural America, there is a conservative five million dollars per year loss in cattle alone.

In biological concepts alone, the ramifications of impacts of free rang mg dogs and cats in the planning unit are staggering. When the increasing recreational activities are considered, the problem becomes even more complex. Studies have shown that people go to the animal pounds to obtain dogs and cats for company in their recreational home, only to release them when they return to their permanent residence after vacation. g/

It is important to stress that in an area of highly concentrated recreational use, this critical impact to wildlife comes not always intentionally, but from lack of understanding, unawareness and from “loving it to death“. Recreation residential areas, large group camps, and related activities often destroy the very thing which attracted the people to the area in the first place – wildlife viewing and being with nature ln.qeneral_

It is also important to stress tnat with all management alternatives currently

open to land managers, wildlife will be severely impacted, both directly and indirectly, due to the increased human population in the planning unit and the world.

Mitigative action: There are several mitigative actions which should be considered as essential if any senblance of the existing wildlife diversity is to be maintained or prolonged.

l. Hold human population increases to a minimum. This must include the development of facilities which exist to accommodate an increase in human population, and to minimize people use in general, such as found in dispersed recreation areas.

2. Provide greater protection to the fragile alpine biome.l/ As the natural character of this area, with its associated wildlife, cannot be retained with even the PI‘eSent People density, administrating agencies ( though very difficult) must cooperate and coordinate management activities which will keep facility development to a minimum and reduce people visitation.

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Free ranging dogs and cat control: If the goals of maintaining wildlife diversity and realizing that agricultural land is a critical resource,

and if public health is to be maintained, dog and cat control should be

an integral part of the planning process. The interagency planning process offers an outstanding tool and opportunity to establish laws, policies and guidelines to manage free ranging dogs and cats.

As land use activities continue to increase, it may not be in the best

interest of resource management or politically comfortable for land managers and county decision makers to consider environmental capacity for people without considering and taking action on free ranging dogs and cats.

Animal damage complaints. As the human population density increases, especially in areas such as the Mt. Hood Planning Unit, there is a proportional increase in the animal damage complaints registered with the Oregon Department of Fish and wildlife. Most of the damage complaints are in the form of deer and elk browsing and trampling on gardens and yards, beaver gnawing on domestic shrubbery (which they usually prefer over wild plants), coyotes chasing and breeding domestic dogs, to mention a few. Animal damage problems will be resolved through cooperative efforts between the Department of Fish and wildlife and public or private land owners.

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Horn, K. I975. Mt. Hood Planning Unit, It’s Wildlife – A Report for
for Land Use Planning, 1975; 42 pp.

Horn, K. 1975. Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, I975, Appendix B & C.

Horn, K. I975, Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, 1975, Winter Range, p. 3.

Horn, K. I975, Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, I975, Wildlife Specifics, p. 3+.

Horn, K. 1975, Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, T975, Snags and Holes, p. 7+.

Horn, K. I975, Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, I975, Value of Wildlife, p. l0 and Faunal Check
Lists, p. ll+.

Horn, K. I975, Mt. Hood Planning Unit, It’s Wildlife – A Report for
Land Use Planning, I975, Threatened and In Trouble, p. 2l+.

I974. The Great American Animal Farm. Time Magazine (Dec. 23); 58-64.
Caras, R. I973. Meet Wildlife Enemy No. 2. National Wildlife. Feb.-
Mar.; 30-3l.

Scott, M. and K. Causey. l97l.
Journal of Wildlife Management.

Ecology of Feral Dogs in Alabama.
37(3); 253-265.

Taylor, W. (Ed) The Deer of North America. Stackpole Co.
Beck, A. M. I973. The Ecology of Stray Dogs; A Study of Free-Ranging
Animals. York Press, Baltimore, MD XIV. 96 pp.

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Wells, N. 1974. Pet Explosion; County’s l00,000 Strays Create Havoc.
Willamette Week (Week ending Dec. 9) Portland, OR. l(4); 3.

Baldwin, P. I968. Woodpecker Feeding on Engleman Spruce Beetle in windthrown Trees. U.S.F.S. Research Paper – RN-l05, 4p. Rocky Mountain Experiment Station, Fort Collins, Colo.

Baldwin, P. 1968.
North-Central Entomological Society of America Proceedings. 23; 90-99.
Beebe, S. 1974. Relationships Between Insectiverous Hole-Nesting Birds
and Forest Management. Yale University School of Forestry and Environ-
mental Studies. New Haven, Conn.; 49 pp.

Massey, C. and N. Wygant. I973. woodpeckers: Most Important Predators of the Spruce Beetle. Rocky Mountain and Range Experiment Station, Forest Service, USDA, Fort Collins, Colo. l6; 4-8.

Payne, B. and R. DeGraff. I975. Economic Values and Recreational Trends
Associated with Human Enjoyment of Non Game Birds. Proceedings of the
Symposium of Forest and Range Habitat for Non Game Birds. USDA – Report –

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Predator—Prey Relationships of Birds and Spruce Beetles.

EXHIBIT Q

ASSESSMENT OF ALTERNATIVES – RECREATION

A. Changes from existing situation

l. Quality of recreation experiences, based on expected population user levels.

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All of the alternatives provide a heavy proportion of day-use/overnight-use opportunities, because suitable facilities for camping are not provided.

The highest proportion of overnight facilities would be provided by Alternative

A although quality of recreation would be reduced.

the greatest proportion of day use.

l_/ See Summary Tables for Numbers

Alternative B would give

4. Availability of recreation facilities

Activity Alternative A Proposed Allgrnative B
Skiing Most Intermediate eas
Snow activities Intermediate Most Least
Fishing ——– — No differences ——– —
Hunting No differences

Camping No differences

Drive for pleasure Intermediate Most Least
Scenic viewing No differences

water sports No differences
Mountaineering ‘ No differences

Resort Most Intermediate Least
Golf Intermediate Most Least
Picnicking Intermediate Most Least

8. “Spinoff” effects of alternatives.

l. Overcrowding or under-use of facilities.

The Proposed Plan would have the least impact because it would be the most efficient administratively. Alternative A would be intermediate while Alternative B would be worst.

2. Diversion or encouraging use to avoid overcrowding.

The Proposed Plan best encourages use where it can be accommodated.

3. Contribution to local economics. Because the local recreation economy depends on a retention of the present attractions and amenities of the area, Alternative B contributes the most to a healthy long-term economy.

Summary of”spin-off’effects.

Alternative A Proposed Alternative B Facility overcrowding Intermediate worst Most Concentration of overcrowding H Most Least Contribution to local economy Least Intermed Most

Administrative problems resulting from various alternatives: the most complex alternative to administer would be Alternative B. The least complex would be

the proposed plan. Concentration of people simplifies and makes for efficient use of services until the concentration becomes too great. The proposed plan

would improve administration over the present situation.

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Records of the Zoological Survey of India, Volume 102, Issues 1-2

Records of the Zoological Survey of India, Volume 102, Issues 1-2

The Olive Ridley turtle is the smallest of the sea turtles of the coast of India and is the one
most often found in Kerala coast. The Olive Ridley is one of the high profile species which

32

RECORDS OF THE ZOOLOGICAL SURVEY OF INDIA
has received substantial media coverage and scientific attention in recent years. This is the only
turtle that forms massive nesting congregations. The largest nesting population in the Indian
subcontinent is at Gahrimatha in Orissa, which has been the subject of several long term studies by
many scientists. During our survey along the coastal areas of Malabar, we encountered 24 nesting
sites (Map 1) along the 200 km long sea coast. The most abundant nesting areas are found in
between Kavvayi and Manjeswaram riverine area in Kasaragod district. Thaikadappuram in
Kasaragod district, Kolavipalam in Kozhikode district and Muthiyam beach in Malappuram district
are protected by Kerala Forest Department with the help of local Panchayaths and non-governmental
organizations by maintaining hatcheries and giving protection to the breeding turtles. In many
areas, the local fishermen and villagers reported having seen over 100 nests annually, 20 years
before; but in recent years, the number of nestings have reduced considerably. According to the
fishermen, sea turtle nests were not seen in the beaches other than in Kolavipalam and Payyoli of
the Kozhikode district for the last five years. Jackals ( Canis aureus). Common mongoose ( Herpestes
edwardsi) and feral dogs were the main primary egg predators at most beaches, and a number of
depredated nests were seen in many areas. The turtles visit Malabar beach during September to
February, every year, mainly from October to January, with a peak period in November.

Reasons for the decline of Turtles :

Uncontrolled mechanized fishing in areas of high sea turtle concentrations, illegal near-shore
trawling and operating gill nets result in heavy mortality of adult sea turtles. Indiscriminate sand
mining along the sandy beaches of coastal Malabar is a great threat to the breeding population of
turtles. Developmental activities of man such as construction of buildings in the coastal areas,
illuminating the nesting beaches by artificial lights, discharging industrial effluents into the sea,
planting of Casuarina in some of the beaches, destroying the mangrove vegetation along the
estuarine areas etc pose great threat to the survival of sea turtles. Besides, collection of eggs and
adults for meat and medicine by locals and depredation of eggs and juveniles by jackals, feral
dogs, mongooses and crows take heavy toll.

 

Status of Sea Turtle Conservation in the Western Indian Ocean

Status of Sea Turtle Conservation in the Western Indian Ocean

BIOLOGY OF NESTING ANIMALS
Turtle track counts: Regular beach surveys during which turtle tracks are examined and
counted will tell us: what species occur, how many clutches are laid annually, and the
seasonal and geographic nesting distribution.
Turtle tagging programmes’ Placing tags on turtles will tell us how often turtles come to
nest during the course of a nesting season; how many years pass between nesting
seasons; the precision with which turtles return to the same nesting beach; and their rates
of survival. It can tell us how many years turtles remain reproductively active. When a
tagged turtle is captured at a distant locality and the tag is reported or returned, we learn
about migrations and also about the extent of harvest or incidental capture by people.
Determination of egg and hatchling mortality: By counting eggs as they are laid, marking
their location on the beach, and then excavating the nest at the end of the incubation
period and examining its contents, one can determine the rates of mortaiity in the nests.
In most situations, however, natural predators are not a serious threat to the turtle
population. The most destructive predators are usually human egg collectors and the
animals that are associated with humans – especially feral dogs, pigs and cats. To evaluate
the extent of predation by humans and feral animals, it is often sufficient to examine
footprints on the beach and determine whether they are associated with nests that have
been dug up.

THREATS (MANAGEMENT CONCERNS)
Natural threats to nesting beaches: No records exist yet of nests dug out by natural
predators. Monitor lizards are not yet known from the coastal areas or islands. No larger
carnivores (Including domestic dogs) are known from the islands, but jackals and other
smaller carnivores are known along the mainland coast. We have no data as yet from the
areas visited of any natural significant erosional threats to nesting beaches. By and large
islands have southern sandy beaches, continually replenished in the winter months.
Egg collection by humans: All people questioned on this topic to date mention collecting
turtle eggs as a source of food. They do not appear as a trade commodity however.
,
,
I
Fishery-related threats to turtles: Eritrea’s fishery was significant in the past with tonnages
of 25,000 tannes per year being landed by a number of trawlers operating out ct Massawa
Their impact on the turtle population was not recorded. The fisheries were strictly controlled
and finally banished during the Dergue period, and trawling did not star! again until March
1994. Records exist but are basic, and fisheries observers not consistent in their record
keeping, particularly of bycatch The records that we do have indicate a significant offtake
of turtles (see Table 2), which observers complain are usually dealt with last, thus often
suffocating under the heap of landed fish, if they have not already drowned in the net. One
record cruise recently netted over 300 turtles on a single cruise of 17 days duration.
Other human related threats: Development along the Eritrean coast has changed little in
the recent or longterm past, and may even have declined as a result of suppression of
boat-dependant activities in the area over the past 30 years, New developments may
impose threats, for example if large tourist hotels, oil exploration and oii exploitation
develop,

Turtle Protection Needs
Control and mitigation of the impact of accidental capture in fisheries: The Ministry of
Marine Resources intends to investigate the application of turtle excluder devices (TEDs)
to trawl nets, Turtle excluding devices are not yet in use and while they are a part of
Eritrean fisheries legislation, our attempts to obtain details for their construction have so
far failed, Beller enforcement of the requirement for industrial trawlers to return live turtles
to the sea as rapidly as possible will be attempted,
National harvest The national harvest of turtles will be closely studied to determine its
sustainability as a food source. Commercial SElie of turtle meat in urban centres (Aseb) in
particular will be examined and probably discouraged or banned
International harvest: The illegal harvesting of turtles by fishermen from neighbouring
countries, particularly near Aseb, will be controlled along with the illegal fishing itself,
Predator control: Predators do not appear to be a significant threat in Eritrea. No domestic
dogs exist on the islands since these are anathema to the local Muslim culture.
Recreation and tourism: Education and regulation will be employed to ensure that tourism
has minimum impact on turtles, and will address curto sales, as well as disturbance to
nesting turtles or turtles found while divinglsnorkelling.
Community incentives and participation local communities are already being contacted
and will be drawn into active and substantive participation in management of these
environments, including the turtle resource, Full consideration will be given to their
traditional sources and legitimate needs for food and other support from their marine
environment now and in the future.
Public awareness and education: Environmental awareness is already high, and education
programmes will be encouraged and fully supported. Environmental issues, including the
marine environment and turtles, are already a part of the school curriculum

THREATS (MANAGEMENT CONCERNS)
Natural threats to nesting beaches: Beach erosion and natural predators including crabs,
birds, mongoose, dogs, contribute to the loss of eggs and hatchlings. In addition to losses
on the nesting beach, birds and reef fishes consume hatchlings at sea and sharks hunt
juvenile and adult turtles (Wamukoya et 81.,1995). Adult female nesting turtles are also
killed while nesting on the beach.
Egg colfection: Egg harvesting by the local people is widespread and common, and needs
to be controlled to prevent further decline of turtle populations in Kenyan waters.
FislJery-related threats to turlfes: Trawlers and gill nets are the major threats to the survival
of sea turtles in Kenya’s waters, Shrimp catches using trawls usually take large quantities
of fish, sea turtles and other organisms as by-catch whichis later discarded into the sea
as “trash”. Because nets sometimes are dragged for hours before they are brought up
turtles often drown, but in any case the manner in which turtles are discarded leaves them
with no chance to survive (Wamukoya et I’ll., 1995). Artisanal fishermen often lay their nets
for days, catching sea turtles which eventually drown.
A large number of traditional boats are non-mechanised consisting of dug-out canoes and
sail boats. The small non-mechanized traditional vessels are powered by oars and sails and
are more concentrated in the south than in the north. Mechanized dhows are preferred in
the north owing to the stormy weather conditions which require larger and stable vessels,
Overseas fisheries: AIHTOUgh all the registered fishing vessels are operated by “Kenyan”
nationalities, their origins include China, India, Greece and Italy. Occasionally there have
been reports of Korean and Japanese vessels pursuing tunas into Kenyan waters.

Predator Control: Predation of eggs and hatchlings by ghost crabs, dogs, hyenas and other
animals can be minimised by permanent beach patrol teams established along the entire
coastline. Enclosure materials are provided to cover the nests which are monitored to
ensure that emerging hatchlings are not entrapped in the enclosures. Such enclosures are
usually removed after 45 days. Eggs laid in vulnerable places are translocated.

Other human-related ttueets: The availability of suitable nesting sites is decreasing with
coastal development concentrating on the construction of beach hotels in many areas, thus
disturbing traditional nesting sites (Semesi & Ngoile, 1993). Other problems are beach
lighting, solid waste disposal, feral cats and dogs, and perhaps roof rats, Ral/us raltus,
which may be present in large numbers on some offshore islands.

Other human-rolated throats: These include slaughter of green turtles and hawksbills for
meat; occasional slaughter of hawksbills. for shell; over-development of the coastline
bordering nesting beaches; destruction of foraging habitats caused by dredging and land
fill operations (especially along the east coast of Mahe): predation of eggs and hatchlings
and disturbance to nesting females caused by feral animals on the nesting beaches. Dogs
are a problem on some of the Nature Reserves in the Granitic Islands (Le. St Anne,
Moyenne, Cerl). Feral pigs released within the past three years are a problem on
Cosmoledo and Astove. Feral cats are a problem on Aldabra.

Natural threats to nesting beaches: There is widespread evidence of predation of
hatchlings by crabs, bird such as frigates, grey herons and crows, feral dogs and civets,
Beaches undergo serious erosion in the rainy season (January- February) as a result of
gales and heavy runoff.

Other human-related threats: Poaching is the main danger that threatens the turtles in the
waters of Reunion The situation is improving with the establishment of DIREN in 1992 and
the Nature Brigade in November 1994, The suitability of beaches for nesting is diminished
by intensive use of all beaches by the public (even at night) and intensive urtentsauon
close by (with the exception Saint-Paul and Eiang Sale); construction of hotels on the fringe
of the beaches in the West; lighting from cars, streets and houses; intense traffic on the
nearby road; removal of sand for building purposes; the building of protective walls in front
of some properties; and presence of stray dogs and rats

Predatorcontro/: A general campaign should be launched for the sterilisation of stray dogs.