Reptiles of Ohio. Common Snapping Turtle Chelydra serpentina.
THE CONSERVATION OF THREATENED AND ENDANGERED TURTLE...
Transcript of THE CONSERVATION OF THREATENED AND ENDANGERED TURTLE...
THE CONSERVATION OF THREATENED AND ENDANGERED TURTLE SPECIES IN NORTHERN NEW YORK
Clare Joscelyne and Nora Talkington Conservation Biology
Case Study
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TABLE OF CONTENTS 1. Problem Definition
a. Worldwide Decline b. Northern NY Decline c. Bog Turtles d. Wood Turtles e. Blanding’s Turtles f. Spotted Turtles
2. Historic Distributions 3. Human Impacts
a. Life History Characteristics b. Predation c. Road Mortality d. Habitat Degradation and Fragmentation e. Pet Trade and Illegal Collecting f. Invasive Species
4. Government Issues 5. Stakeholders
a. Wildlife b. Conversationalists and Organizations c. General Public d. Road Management e. Developers f. State Government
6. Solutions a. Parameters b. Possible Solutions c. Feasibility and Best Solutions
i. Headstarting ii. Habitat Protection and Networking
iii. Creation of Artificial Habitat iv. Reducing Road Mortality
7. Implementing Solutions a. Headstarting b. Habitat Protection and Networking c. Creation of Artificial Habitat d. Reducing Road Mortality e. Implementation Plan
8. Works Cited
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Problem Definition:
Worldwide Decline
It has been estimated that more than 130 or at least half of all the 260+ turtle
species populations are in serious decline worldwide (Angier, 2006). Researchers have
even gone further to predict that over 100 species of turtles will go extinct if severe
conservation and protection strategies are not implemented soon (Klemens, 1993).
Although there are many turtle species that are common such as the Painted Turtle
(Chrysemys picta) in North America, turtles as a group are not considered safe from
population decline, whether or not they inhabit terrestrial, marine, or freshwater
ecosystems (Klemens, 2000). As when any species undergoes a significant decline, it is
crucial to examine this loss on a larger scale. To begin, it is beneficial to address the
question of why this loss is even significant and whether or not biodiversity will be
affected. More specifically, if certain turtle populations decline or even go extinct, the
biodiversity implications and overall significance this will have on the surrounding
ecosystem and functioning, other species, and humans that have a say in the matter.
Biodiversity is extremely important for a number of reasons, many of which
depend on individual conservation values. Often support for the conservation of a species
originates from its intrinsic value, or the belief that biodiversity should be conserved and
considered important just because it exists. In many cases, the driving motivation behind
the conservation of turtle species worldwide has been the intrinsic value that people place
on the animal simply because it exists (Groom et al., 2006). Cultures worldwide have
placed intrinsic value on turtles out of fascination with their “unique defense armor” and
their slow and often friendly nature. Peter C. H. Pritchard, director of the Chelonian
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Research Institute in Oviedo, Florida, firmly believes that just about everyone finds
turtles endearing. Pritchard argues that turtles are by far the most popular reptile: “unlike
snakes, which may threaten you and which move like a flash, turtles are benign and slow,
and you can’t dislike or distrust the clumsy” (Angier 2006). It is quite possible that the
reason why turtles have often played key roles in mythology and folklore is a direct result
of their charismatic and lovable nature (Klemens, 2000).
However, conservation of turtle species or biodiversity in general for the sole
reason that these populations have intrinsic value does not always pertain to all interests.
Many times individuals will value a certain species, community, or ecosystem for the
benefits that it will bring to humans. This motivation for conservation is what is known as
the instrumental or utilitarian value of biodiversity (Groom et al., 2006). A utilitarian
motivation for the conservation of turtles could be the fact that as a group they are known
as a flagship species, or a charismatic species that often provokes interest in conservation.
One of the primary reasons why Blanding’s Turtles in Nova Scotia are frequently studied
is because promoting awareness and efforts towards this species is often linked with the
success of Kejimkujik National Park. As more interest and effort is put into Blanding’s
Turtle conservation in the National Park, more turtle enthusiastic visitors are drawn to the
area although it is already a location that is greatly admired by many people for its natural
beauty and recreational opportunities (Herman et al., 1995).
Although many humans support global biodiversity on an intrinsic level, the
ecological reasons why turtles should be valued are quite possibly more significant
reasons for conservation efforts. Conserving biodiversity and ensuring a wide variety of
diversity is important for the purpose of ecosystem functioning and success. Although
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there are a limited number of studies on the effects that rare species have on ecosystem
functioning, there is data to support the hypothesis that a more diverse community is
beneficial in terms of maintaining ecological balance and keeping certain populations in
check (Groom et al., 2006). Turtles are vital species in ecosystems for their role as
scavengers, herbivores, and even as carnivores. For example, the Blanding’s Turtle
(Emydoidea blandingii) is a species that feeds on many levels of the food chain, and
therefore has a role in preventing severe population increases in species such as insect
larvae and freshwater snails (Herman et al., 2003). Turtles are also important in terms of
their role in linking ecosystems, as they often are a mode of plant dispersal and thus
contribute to the overall biodiversity of a region (Lovich, 1995). For example, turtles
often are responsible for dispersing temperate forest plants between ecosystems (Klemens,
2000). Turtles are also important to ecosystems for their role as indicator species. For
example, the Blanding’s Turtle in Nova Scotia has been recognized as an ideal indicator
species because its presence generally indicates highly productive and nutrient rich
waters, thus smaller or non-existent populations of Blanding’s turtles are generally a sign
of nutrient poor waters (Herman et al., 2003).
Northern New York Decline
The turtle populations of New York State are not exempt from the declines that
have been so characteristic of turtle populations worldwide. Table 1 is a comprehensive
list of the 18 turtle species that can be found in New York and their current status
according to the Herpitile Atlas compiled by the New York State Department of
Environmental Conservation (NYSDEC).
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Table 1. Total number of turtle species and current status located in New York State as compiled by the NYSDEC (Ford and Johnson, 2007).
Turtle species Status
Bog Turtle Clemmys muhlenbergii Endangered
Leatherback Sea Turtle (Dermochelys coriacea) Endangered
Atlantic (Kemp's Ridley) Turtle (Lepidochelys kempii) Endangered
Atlantic Hawksbill Turtle (Eretmochelys i. imbricata) Endangered
Blanding's Turtle (Emydoidea blandingii) Threatened
Green Turtle (Chelonia mydas) Threatened
Eastern Mud Turtle (Kinosternon s. subrubrum) Threatened
Loggerhead Turtle (Caretta caretta) Threatened
Wood Turtle (Clemmys insculpta) Special Concern
Spotted Turtle (Clemmys guttata) Special Concern
Northern Diamondback Terrapin (Malaclemys t. terrapin) Special Concern
Red-Eared Slider (Trachemys scripta elegans)
Non-Native
Introduced
RedBelly Turtle (Pseudemys rubriventris)
Common Map Turtle (Graptemys geographica)
Stinkpot or Common Musk Turtle (Sternotherus odoratus)
Eastern Painted Turtle (Chrysemys picta)
Eastern Spiny Softshell Turtle (Apalone s. spinifera)
Eastern Box Turtle (Terrapene c. Carolina)
Common Snapping Turtle (Chelydra s. serpentina)
Overall turtle diversity in New York is relatively low, with only two species
considered as “common” and found statewide; the Snapping turtle (Chelydra serpentine)
and the Painted Turtle (Chrysemys picta) (Johnson, et al., 2007 DEC). Out of the 18
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endemic species, 11 are listed as either threatened, endangered, or of special concern;
indicating that there is a definite trend of population decline in turtle species of New
York. In terms of understanding the extent of this issue and in order to attempt forming
possible conservation strategies, it is important to understand the reasons behind these
declining populations. There are many reasons contributing to this statewide decline
which can explained by specific life history traits of turtles such as their long
reproductive life span, low juvenile survivorship, and low egg production. Many turtles
are also lost to road mortality, as nesting sites and migratory routes often collide with
state roads and large highways. Collection of turtle species for the pet trade and export
for consumption (which is most common in Asian countries) has also contributed to turtle
decline. Another factor, although not as common, is the outbreak of disease in various
turtle species and the pollution of aquatic water bodies by chemicals and heavy metals
(Klemens, 1993). However, the major causes of turtle decline are the loss of habitat and
the habitat fragmentation that results from the increase in urbanization and development
as well as new road construction (Klemens, 2000).
Of the 18 turtle species found in New York, our study focuses on the Bog Turtle
(Clemmys muhlenbergii), the Wood Turtle (Clemmys insculpta), Blanding’s Turtle
(Emydoidea blandingii), and the Spotted Turtle (Clemmys guttata). All four species are
listed as either endangered, threatened, or of special concern in the state of New York.
According to the New York State Department of Environmental Conservation (DEC) an
endangered species is one which is in imminent danger of extinction in NY and which is
listed as endangered by the United States Department of the Interior. Species which are
listed as threatened or of special concern are those that are in danger of becoming either
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endangered or threatened in the near future. Special concern species are not recognized
by the United States Department of the Interior while threatened species have federal
status (New York State Department of Environmental Conservation).
We chose to focus on the Bog Turtle because it is the only turtle in New York
State listed federally as endangered. Historically the Bog turtle occurred in over 74
locations which were primarily in the northeastern portion of the state, but only a quarter
of these sites currently host active populations. In 1997 the Bog Turtle was first
recognized as threatened by the US Fish and Wildlife Service although the Convention of
International Trade in Endangered Species has listed the turtle as endangered since 1975
(New York State Amphibian and Reptile Atlas Project 1990-1999). This convention
(CITES), which protects internationally traded species from unsustainable levels of
exploitation, recognized at an early date the susceptibility of Bog Turtles to over-
harvesting. We also chose to focus on the Wood Turtle because it is listed as a species of
special concern and was also one of the few rare species found in Saint Lawrence County.
This herpitile was one of the first turtles in North America to be protected by law and in
1905 New York State added this species to the “Forest, Fish, and Game Law” and
prohibited the “taking, killing or exposing for sale of all land turtles and tortoises,
including the Box and Wood Turtle”( Herp. Atlas 1990-1999). The Spotted Turtle is also
listed as a species of special concern and was selected because of its proximity to Saint
Lawrence County (Spotted Turtles are distributed from the Great Lakes Plains region to
the Lower Hudson River valley). This species was additionally selected because of its
sensitivity to human impacts such as habitat fragmentation, urban development, and
pollution (Gibbs et. al 2007).In the early 1900s the Spotted Turtle was recorded as the
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most common turtle found near New York City but abundance has since declined and it
is currently listed as endangered in Illinois and Ohio, threatened in Maine and Vermont,
and special concern in Indiana (Herp. Atlas 1990-1999). The Blanding’s Turtle has a
threatened status in the state of New York and was chosen primarily because of it’s
presence in Saint Lawrence County. This species is especially vulnerable to residential
development and associated habitat loss occurring in the area (Gibbs et. al 2007).
Bog Turtles:
The Endangered Species Act began protecting Bog turtles nationwide in
November 1997 because of inconsistent state conservation throughout the species range.
Populations of these turtles are scattered along the east coast, ranging from Georgia and
Tennessee to New York and Massachusetts (Figure 1).
Figure 1. Range of Bog Turtles, Clemmys muhlenbergii, in the US (Herp Atlas).
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Bog Turtles are found primarily in the southeast portion of NY, although four populations
occur in Seneca and Oswego Counties (Gibbs et. al 2006). These turtles, which are the
smallest in North America, are characterized by dark coloration and large yellow to
orange spots on both sides of the head. The coloration and size of these blotches vary
between populations and are dependent on the age of the turtle (Figure 2).
Figure 2. Bog Turtle; Clemmys muhlenbergii (Herp. Atlas 1990-1999).
Newly hatched juvenile Bog Turtles have faintly colored blotches which increase in size
and intensity as the turtle ages. Shell lengths of this species average between 3-4 inches
(Ecology of Bog Turtles). The diet of Bog Turtles is known to include insects, plants,
frogs, slugs, and carrion. This secretive species can sometimes be spotted basking in the
open during mid-April after they have emerged from hibernation in soft mud. Mating
activities occur in the spring, but can sometimes be observed in the fall as well. A female
Bog Turtle will lay a clutch of two to four eggs in nest located inside an un-shaded
tussock which hatch in mid-September. These herpitiles reach sexual maturity at around
eight years old and can live up to thirty years. Over this period of time a female may
reproduce from 10 to 15 times (Gibbs et al. 2007).
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Despite their name, Bog Turtles are not found in bogs and instead prefer open,
early-successional habitat. They also favor fens (wetlands fed by springs or seeps)
dominated by sedges and sphagnum moss. Characteristics of these habitat types include
slow-moving water, deep muck soils, and tussock-forming vegetation (NYNHP
Conservation Guide 2007). In order to successfully conserve Bog Turtle abundance in
New York, it is important that we have a clear understanding of the various habitats used
by this species and their movements between them. This species in particular has a large
dispersal range and high mobility. Individual Bog Turtles have been sited miles away
from their wetland habitats. Such migratory movements take them across forested
uplands, valleys, and cultivated areas. Mark-and-recapture studies have discovered that
Bog Turtle densities seldom are more than 15-20 individuals per acre (Ecology of Bog
Turtles). A study performed by Chase et al. in 1989 on habitat characteristics and home
range of Clemmys muhlenbergii in Maryland found that male Bog Turtles had home
ranges of around 0.176 acres which were typically larger than female ranges (0.066
acres). Turtles moved extensively within these ranges, indicating that conservation efforts
should focus on the protection of a network of critical habitats which would allow for
movement and gene flow among sub-populations (Chase et al. 1989).
Wood Turtles:
Wood turtles are distributed throughout the Midwestern to the northeastern United
States and Canada. All states within its range list this species as either threatened,
endangered, or a species of special concern. Within New York, Wood turtles are widely
scattered, although they are most common in the Hudson River Valley region (Figure 3).
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Figure 3. Illustration of Wood Turtle, Clemmys insculpta, distribution in New York State (Herp. Atlas 1990-1999).
These herpitiles are dark brown with yellow, orange, or red chins, throats, tails, and
undersides of forelimbs. They are typically large animals, with an average carapace
length of 5.5-8.0 inches (Figure 4).
Figure 4. Illustration of a Wood Turtle, Clemmys insculpta (Herp. Atlas 1990-1999).
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The diet of the Wood Turtle consists of earthworms, snails, slugs, insects, amphibians,
algae, moss, berries, and fungi (Gibbs et al. 2007). These turtles are mostly active during
the day from April through November. After this period of activity they enter into
hibernation in undercut banks and root masses and emerge when temperatures are high
enough for them to maintain a high body temperature. Wood turtles reach sexual maturity
at 14-18 years of age and have a lifespan of 46-100 years. Mating occurs throughout the
year but peaks in the fall. Females can lay between 5-12 eggs and incubation lasts
typically 60-70 days (Wetland Connections).
Because Wood Turtles typically have large ranges and require many different
habitat types, the conservation and networking of these specific habitat types is needed in
order to sufficiently protect this species. Wood turtles hibernate in streams, nest in
riparian gravel bars, and forage during the summer in a variety of upland and wetland
habitats. These habitat generalists are found in alder swales, swamps, bogs, meadows,
fields, and mixed forests. A study by Compton et. al in 2002 tracked Wood Turtles in
western Maine in order to identify habitat selection by this species. They found that
turtles migrate often between wetlands and forests in order to balance foraging (forest)
and basking (wetland) activities. Table 2 shows the specific cover types used by these
turtles in 1998 at 1155 turtle locations selected in western Maine from May-September.
This diverse use of many different habitats indicates that the protection of this species
requires the conservation of many different ecosystems (Compton et al. 2002).
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Table 2. Cover types used by Wood Turtles in 1998 at 1155 turtle locations in western Maine from May-September modified from Compton et al. 2002.
Blanding’s Turtles:
Blanding’s Turtles are a species of great concern in Saint Lawrence County
because they are found in few other New York locations (Jefferson county and in the
great lakes plain in Niagara County). Isolated populations have also been noted in
Dutchess and Saratoga counties (Gibbs et al. 2007) (Figure 5).
Figure 5. Blanding’s Turtle, Emydoidea blandingii, distribution in New York State (Herp. Atlas 1990-1999).
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These turtles are also found in the Great Lakes region, Minnesota through Iowa,
Wisconsin, Michigan, Southeastern Ontario, and Southwestern Quebec. They are
characterized by a bright yellow coloration of the chin and throat and are medium to large
in size with a shell length of 5-10 inches. Their unusually long necks serve as periscopes
in shallow water and allow them to search deep water for prey (Figure 6).
Figure 6. Illustration of Blanding’s Turtle, Emydoidea blandingii, distribution in New York State (Herp. Atlas 1990-1999). The diet of Blanding’s Turtles in New England include crustaceans, insects, other
invertebrates, and vegetable matter (NYNHP Conservation Guide 2007). This species is
active from early April to November. Mating occurs from May to July although fewer
than half of the adult females may nest in a given year. Females lay a clutch size of 5-13
eggs which have an incubation period of 68-118 days. Sexual maturity of Blanding’s
Turtles is not reached until 14-20 years of age and these turtles may live up to 70 years
(Gibbs et al. 2007).
Blanding’s Turtles require shallow wetlands such as swamps, marshes, ponds and
use vernal pools in the spring. They are known to travel long distances from wetland
habitats in search of uplands for nesting site locations. Development in corridors between
the Blanding’s Turtle’s wetland and nesting habitats is the leading reason for the decline
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of this species (NYNHP Conservation Guide 2007). Juvenile turtles tend to prefer small
ponds and marshes over larger lakes because the shallow waters and dense vegetation of
these areas provide protection from predators such as large fish (Bury et al. 2003).
Spotted Turtle:
The Spotted Turtle’s range extends from Southern Maine along the east coast to
northern Florida. Populations are also found in the Great Lakes region and in Southern
Quebec. In New York State these turtles are found in the Great Lakes Plains, in the lower
Hudson River valley, and on Long island (Figure 7).
Figure 7. Spotted Turtle, Clemmys guttata, distribution in New York State (Herp. Atlas 1990-1999).
This “polka-dot” turtle has yellow spots on the head and shell but is primarily black. Like
the yellow blotches found on the head of the Bog Turtle, the number and arrangement of
spots is a good indicator of the age of an individual. These turtles are relatively small,
measuring 3.5-5.0 inches in length (Figure 8) (Herp Atlas 1990-1999).
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Figure 8. Illustration of Spotted Turtle, Clemmys guttata (Herp. Atlas 1990-1999).
Spotted Turtles are active from March to October and are relatively tolerant of cold
temperatures in comparison to other species. In late October they hibernate communally
under shrub roots in slow-moving streams. Mating season occurs from March to May and
during June females voyage from the wetlands to an appropriate nesting site. Clutch sizes
usually range from 3-7 eggs and incubation time of 88-125 days. Like the Wood Turtle,
Blanding’s Turtle, and Bog Turtle, Spotted Turtles are opportunistic feeders and prefer
worms, slugs, snails, crayfish, millipedes, spiders, and other insects (Wetland
Connections).
Spotted turtles are excellent navigators and some males may travel over a mile in
search of females (Gibbs et al. 2007). They are habitat generalists as well as opportunistic
feeders and have been noted in brooks, marshes, sedge meadows, bogs, ponds, woodland
streams, swamps, ditches, and seasonal pools. In general this species uses vernal pools in
the spring, upland forest habitat in the summer, and swamps, bogs, or wet meadows for
hibernation. Because Spotted Turtles move about these different types of habitats,
conservation strategies should provide networks between these ecosystems. Areas
“targeted for conservation should also be large enough to accommodate viable
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populations of Spotted Turtles, and the upland habitat should be conductive to travel
between wetlands”(Wetland Connections). Spotted Turtles also have relatively large
home ranges and according to a study on habitat movements and use by Spotted Turtles
in Massachusetts, these can range between .2-34.4 acres (Milam et al. 2001). Table 2
compares the overall proportion of days that Spotted Turtles spent in each habitat type for
two sites in Massachusetts in 1993-1995 ( Milam et al. 2001) (Table 3).
Table 3. Comparison of overall proportion of days spent by individual Spotted Turtles in each habitat type in two sites (Quabbin and Lawrence Swamp) in central Massachusetts modified from Milam et al. 2001.
Historic Distributions:
In order to asses whether or not populations of these four species (Wood, Bog,
Blanding’s, and Spotted Turtles) has actually declined from past to present distributions,
it is essential that we compare historic versus current data on population distributions and
abundance of these herpitiles. Unfortunately this type of data does not currently exist,
although several observations were made in the 1800s and early 1900s which allow us to
predict relative historic abundance of several species. Dekay in 1842 noted the presence
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of Spotted Turtles and added that “these little animals [are] found throughout the
Union”(Herp. Atlas 1990-1999). Later observations by Eckel and Paulmier in 1902 also
noted the presence of Wood, Spotted, and Bog turtles. Spotted Turtles were “common in
ponds all over the state, frequently seen sitting on logs.” Wood turtles were distributed
“all over the state, taken both in land and water.” Bog turtles were more rare yet
nevertheless reported in the “Southern Part of the state, particularly in the branches of the
Delaware River” (Herp. Atlas 1990-1999). According to fossil records, these ancient
turtles have been traced back to the Paleocene era when the species expanded its range
eastward from habitats in the Midwestern prairie. Bog turtles made there way to NY State
by moving along glacial outlets and river basins, negotiating their way over mountain
chains and ridges (Lee et al. 2001 )Over the past 20 years Bog Turtle populations in the
northern portion of the United States have declined by 50 percent. Currently, this species
has been observed at fewer than 200 sites in their northern range. Because of increasing
habitat degradation, only 35 of the 176 sites assessed by the US Fish and Wildlife Service
are capable of supporting healthy Bog Turtle populations into the future unless measures
are taken to protect and restore this specie’s critical habitat (U.S. Fish and Wildlife
Service, 1997).
Fossil evidence of historic Blanding’s Turtle distributions suggest that the species
has also expanded eastward since the last glaciation. It is estimated that this shift
occurred because of habitat disappearance and changing climatic conditions. Although
there is a lack of data on past population abundance and distributions in NY State, based
on estimates of genetic diversity, it is likely that Blanding’s Turtles were once more
widespread and populations were larger (Herman et al. 2003). In Canada, as concern for
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this species grew in the mid 1980’s, research was conducted on Blanding’s Turtle
distributions and ecology. This research, which documented declining Blanding’s
population abundance from the start to end of the study, led to the development of a
status report in 1993. This report encouraged the Committee on the Status of Endangered
Wildlife in Canada (COSEWIC) to declare this species as threatened the same year
(Herman et al. 2003). In Northern New York, little data has been collected on Blanding’s
Turtle population abundance and demographics from year to year. One study by Johnson
et al. surveyed for Blanding’s Turtles in Saint Lawrence County using both mark and
recapture and non-trapping techniques. From this data, we can estimate both abundance
and range of this threatened species over a period of six years (Figure 9) (Johnson et al.
2005). Currently an estimated 64 extant Blanding’s Turtle occurrences have been sited in
Dutchess, Saratoga, St. Lawrence, Jefferson, Niagara, and Erie counties, yet data on how
this number compares to historical abundance is not available as surveys which assess
population abundance were not completed until recently (New York Natural Heritage
Program, 2007).
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Figure 9. Distribution of Blanding’s Turtle in Saint Lawrence County from annual surveys during 1999-2005 modified from Johnson et al. 2005.
In conclusion, turtle population decline is a concern both on a local (within
Northern NY) and global scale (as 130 of all the 260+ turtle species populations are in
serious decline). Faced with this issue, the future of four endangered and threatened turtle
species in Northern New York (the Wood, Blanding’s, Spotted, and Bog turtles), is
pessimistic to say the least. Action must be taken immediately in order to preserve New
York herpitile biodiversity and save these species from further decline. This decline, as
detailed in the following section, is caused primarily by anthropogenic activities such as
habitat fragmentation and degradation, which minimizes available critical habitat and
increases road mortality.
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Human Impacts:
For turtles of Northern New York, there are many human-induced impacts that
are responsible for population declines. To view turtle mortalities on New York State
roads as a result of collisions with cars is not an uncommon site and is one of the primary
reasons for population declines in Northern New York. Road mortality is a significant
contributor to turtle population decline because these roads often interrupt migration
paths of these turtle species and often fragment wetland habitat (Langen et al., 2007). The
construction of roads is not the only cause of fragmentation, but habitat degradation
resulting from the loss of wetlands due to an increase in human development is also
another significant reason for turtle population decline. In fact, many turtle studies argue
that habitat loss and degradation is the number one reason for the decline of Blanding’s,
Wood, Bog, and Spotted turtles (Ernst et al., 1994). Similarly, the process of urbanization
has detrimental effects that extend deeper than just the direct loss of habitat. With an
influx of humans in a particular area also comes a significant increase in waste and food
resources for predators that are drawn to these communities such as, raccoons, skunks,
opossums, feral cats, neighborhood dogs, and occasionally birds such as ravens and
crows (Gibbs et al. 2007). Occasionally, these predators will capture and consume adult
full-grown turtles; however, it is more common that the consumption of the turtle eggs is
the primary result of predation (Wetland Connections). Another reason for turtle
population decline is through the pet trade and illegal collecting, an issue that is not
particularly a threat in Northern New York, but may significantly effect turtle populations
on a global level. Turtle population decline has also resulted from the pollution of critical
wetland and upland habitats. Sediment and pesticide runoff from eroding lands and
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agricultural areas can affect water clarity and increase algae growths creating
inhospitable habitats and thus driving off many sensitive turtle species (Angier, 2006).
Finally, the outbreak of invasive plant species can present a major threat to turtle species
in terms of taking over valuable habitat and space for turtles to utilize (Congdon et al.
2006). Although habitat degradation and fragmentation as well as road construction has
had the most significant impact on the populations of the turtles in Northern New York,
the combination of these factors tend to have the most detrimental effects (Langen et al.,
2007).
Life History Characteristics
It is initially important to understand the life history characteristics of turtles
which make them particularly susceptible to human impacts. It has been proposed that
turtles on average are one of the longest-lived vertebrates (Ernst et al 1994). This long-
lived characteristic when paired with the fact that sexual maturity for many species
occurs significantly later in life often constrains many turtle populations. For many turtle
species the advantages of prolonging sexual maturity are numerous. Long lived turtles
that reproduce later in life are often able to produce healthy and numerous young over
their lifespan (Congdon et al. 1993). However, there are many negative aspects of having
a delayed onset of sexual maturation. These include a high risk of mortality before turtles
are first able to reproduce, and a large time gap between generations. Both factors
decrease turtle populations when combined with human related impacts (Congdon et al.,
1993). The Blanding’s Turtle, one of the threatened species found in Northern New York,
is an ideal example of the negative aspects of this life history trait. A study that
researched Blanding’s Turtles for 27 years in Southeastern Michigan found that the
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sexual maturity of the Blanding’s Turtle is not reached until individuals reach 14-20
years of age, with a total life span averaging about 50 to 70 years. It is evident that annual
Blanding’s survival rates are one of the highest among fresh water turtle species, as is
evident in this study when individuals that were approaching 60 years of age were still
recorded as productive (Congdon et al., 1993). However, as noted, there are negative
consequences that occur when these long-lived species are faced with human impacts.
This Michigan study, for example, discovered that as a result of the decreasing demand
for the pelts of large predators that prey on raccoon and fox populations which are
predators to Blanding’s, there was a significant increase in nest survival from 75 percent
to greater than 85 percent. It was also discovered that 72 percent of juveniles older than 1
year, and more than 93 percent of adults had to survive each year to maintain stable
populations (Congdon et al., 1993).
Predation
In terms of nesting, the development of eggs is clearly crucial to the survival and
stability of turtle populations. The majority of freshwater turtle eggs require an adequate
amount of sunlight at the nesting site, and as a result many of these locations that
breeding turtles choose for their nests are areas of human activity. The Spotted and Bog
Turtles are two species which serve as prime examples of this trend in nesting choice.
Many turtle species in Northern New York, including the Spotted and the Bog Turtles,
have been known to choose nesting sites in croplands and pastures. Although these
locations may be characterized with increased sunlight and warmth, these nests have
often been destroyed by plowing and mowing, thus reducing turtle populations of these
species (Klemens, 2000). In addition to the destruction of the actual nest sites, many
25
turtle species suffer from egg mortality due to predation. For example, the Bog Turtle
often lays her eggs in elevated sedge tussocks or in sphagnum moss sites above the water
line. In many cases, ants have been recorded as the primary predator on turtle eggs (Ernst
et al., 1994).
The future of Wood Turtle populations can be considered uncertain as there are
many predators that not only increase egg but also juvenile and adult mortality. For
example, raccoons and striped skunks are recognized as accomplished egg predators,
frequently destroying up to 100 percent of eggs in any particular year. Ravens and
coyotes, although not as destructive, have been known to prey on Wood turtle eggs.
Newly hatched turtles and older Wood Turtle juveniles have to combat the pressures put
on them by raccoons, skunks, feral cats, dogs, opossums, snapping turtles, and various
birds (Ernst et al., 1994). The eggs of the Spotted Turtle are no exception to the common
predators of Northern New York such as skunks and raccoons. In Pennsylvania, for
example, 13.5 percent of Spotted Turtles collected showed signs of predator attacks or
injuries from farm mowers (Ernst et al., 1994).
Road Mortality
A huge factor increasing turtle declines nationwide, as well as in Northern New
York, is the issue of road mortality. In recent years, there have been an increasing number
of studies conducted to determine the numbers, the species most commonly susceptible,
and the reasons behind such high mortality numbers (Langen et al., 2007). One particular
study, conducted by Steen and Gibbs between 1994 and 1999, researched the effects on
the structure of turtle populations in New York. Although this particular study focused on
the common Snapping and Painted Turtles near Syracuse New York, similar results were
26
found in the four species that this case study focuses on in Northern New York. For
example, in this example, it was discovered that sexually mature females were the most
susceptible to fatal vehicle collisions, as these were the individuals migrating the most
frequently and over greater distances in order to establish proper nesting sites. This study
also interestingly highlighted the fact that because most turtle species tend to nest at the
hours around dawn and dusk, road mortality is high, as this corresponds with the high
traffic times (rush hour on major roadways) (Steen and Gibbs, 2004). Overall, this study
concluded that there was a high probability that roads may be altering the population
structure and are skewing in the sex-ratio within turtle populations due to high female
mortality (Steen and Gibbs, 2004). Similarly, Tom Langen of Clarkson University in
Potsdam, has conducted in depth studies of road mortality that threatens the amphibian
and reptile populations of Northern New York and more specifically in the St. Lawrence
Valley. In one of his studies, Langen and his research team conducted a road survey with
100m transects at 137 uniformly spaced locations to assess the turtle mortality occurring
at eight identified “road-kill hotspots” that were chosen during an earlier study. Langen
cites many reasons for the large number of deaths on roads. In the uniformly spaced
locations, no turtle deaths were discovered; however, 38 percent of the hotspots contained
dead turtle species (Langen et al., 2007).
One major reason Langen explains for the significant amount of turtle mortality
on New York roads is their migratory traits, and the fact that roads often stand as
obstacles between breeding or hibernation sites, as well as between wetland and upland
nesting sites. Turtles are often attracted to road surfaces for thermoregulation purposes as
the black asphalt absorbs heat (Langen et al., 2007). A study conducted on the effects of
27
roads on the structure of freshwater turtle populations near Syracuse, New York
confirmed that roads were extremely detrimental to turtle populations but also that
sexually mature females suffered the highest rate of mortality. This study discovered an
increased proportion of male freshwater turtles within wetlands that were surrounded by a
high density of roads. This suggests that the structure of the turtle population was altered,
with more adult female mortalities on the roads and consequently more surviving males
in these road-surrounded wetlands. Although this study did not state any definitive long
term implications, it stated that turtle populations were highly susceptible to decline after
an increase in mortality of sexually mature adults (Steen and Gibbs, 2004).
Habitat Degradation and Fragmentation
With an increasing rate of construction to make way for housing developments,
roads, urban centers and other endeavors, the loss of habitat and wetlands have become a
serious cause for turtle decline in Northern New York (Wetland Connections). As noted
in the basic biology section, Wood, Blanding’s, Spotted, and Bog Turtles often require
different types of habitats at different times of the year. For example, the Spotted Turtle
has been known to come up onto land and burrow for days and/or weeks in the leaves,
but then to retreat back to the wetland areas. The Blanding’s Turtle has also been known
to utilize quite a few different habitats within a short period of time. From hibernating in
marsh areas to feeding in vernal pools in the spring and even moving to wooded swampy
areas during the warmer months, the Blanding’s Turtle requires quite a few different
habitat types (Klemens, 1993). The intricate habitat requirements of these turtles result in
a significant amount of migration over a variety of landscapes and at different times of
the year. To ensure that turtles can move between habitats with relative ease, a mosaic of
28
wetland habitats connected to dry, upland areas is necessary for survival. However, the
protection of a variety of landscapes is not usually included in development plans
(Klemens, 1993). Although the Wood Turtle is mostly terrestrial, all four of the turtle
species we have focused on rely on New York wetland habitats at some point in their life
cycles. Northern New York is a region heavily dominated by the presence of wetlands.
The Adirondack region and the Lake Plain region collectively contribute to 74% of the
state’s wetlands. Unfortunately, there has been significant loss of wetland habitat
statewide due to an increase in anthropogenic activities such as agriculture, mining, and
urbanization. Table 4 shows how wetlands have not necessarily been lost over the years,
but how large amounts of wetland habitat have been converted from a more natural state
to a more altered state. Specifically, the natural shrub and scrub wetlands are being lost
and replaced by altered forested and open water cover types. This loss of natural shrub
and scrub wetlands can often negatively affect turtle species as their habitat is undergoing
a massive conversion (NYSDEC). For example, the Bog Turtle is known to be extremely
sensitive to any habitat alteration or change of environmental conditions and will readily
relocate if these changes occur. However, in the event of heavy development, habitats
will most likely be fragmented and disrupted, making more pristine, hospital lands
difficult to locate, thus, decreasing the chance of turtle survival (Johnson, 2007).
29
Table 4. Changes in the Freshwater Wetlands Resource between the mid-1980s and the mid-1990s (table modified from Herp. Atlas 1990-1999 )
Estimated Acreage Based on Projections from Study
Sample
Cause of Change
Acres
Gained
Acres Lost Acres with Cover type Change
Agriculture 28,800 11,100 2,100
Urbanization 0 8,200 200
Linear Development 30 900 500
Sand and Gravel
Mining
250 2,200 20
Increased Runoff 8,600 50 17,200
Beaver Activity 150 0 7,900
Plant Succession 80 0 119,900
Total 37,910 22,450 147,820
Turtle populations will clearly suffer in the event of severe habitat degradation
and loss. As mentioned previously, the ability to freely migrate between habitats is a
critical aspect of turtle biology. The primary reason that connectivity between varying
habitats is important is because all four turtle species cover large distances throughout
their lifecycles. Figure 10 is derived from a study conducted by Johnson et al. on the
mean distance that female and male Blanding’s Turtles moved during the summer months
30
of 2003 and 2004. Although during four of the five months for both years, male
Blanding’s Turtles moved a significant amount compared to females, it is important to
examine the month of June during 2003 and 2004. During this month, which corresponds
to the peak of nesting season, female Blanding’s turtles are migrating greater distances in
comparison to males. This increase in movement is due to the fact that females are
seeking nesting sites and traveling away from wetlands to dryer, sandier areas. This is
significant because if sexually mature females are migrating more than males in search of
nesting sites, they also have a greater chance of colliding with structures such as roads,
subdivisions, and urban centers, thus increasing their risk of mortality. The survival of
sexually mature females is crucial to the stability of turtle populations, as these are the
individuals reproducing and responsible for creating proper nesting sites to lay viable
eggs (personal communication with Glenn Johnson) Figure 11 displays a similar result,
as it is a GIS produced image of the movement of a female Blanding’s Turtle in Northern
New York. In this image it is clear that not only does a female Blanding’s Turtle move
great distances over the course of the summer months, but also a wide variety of habitats
are necessary as indicated in the legend. Both figures support the point that both male and
female, but particularly female Blanding’s are utilizing a wide variety of habitats and are
moving great distances in short periods of time. Thus, the process of habitat degradation
and fragmentation should be reexamined if conservation efforts are going to be successful
in increaseing turtle populations in Northern New York (personal communication with
Glenn Johnson)
31
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
May June July August September
Month
Me
an
Dis
tan
ce
Mo
ve
d (
m)
Male 2003 (n=4)
Female 2003 (n=4)
Male 2004 (n=6)
Female 2004 (n=17)
Figure 10: Mean distance moved over five months for both male and female Blanding’s turtle in 2003 and 2004 (figure modified from Langen et al. 2002).
Figure 11: Movement of Blanding’s Turtle in Northern New York over a wide range of Habitats (figure modified from Langen et al. 2002).
32
Pet Trade and Illegal Collecting
Another problem facing turtles both globally locally is the illegal collecting of
species for pets or export purposes. Over four years between 1993 and 1997 it has been
estimated that 25 million turtles were exported from the United States to foreign markets
(mostly to Asian and Mediterranean countries) (Behler, 1997). Although habitat loss is
recognized as the most permanent threat to turtle populations, turtle collection can
severely deplete populations of turtles and even force them to extinction (Klemens, 2006).
Out of the four species we focused on the Wood turtle is one species in particular that has
suffered from the illegal collection practice. Wood Turtles are characterized by a
remarkable intelligence and have the learning abilities of rats. This trait makes the Wood
Turtle a popular pet and many populations have been significantly depleted over several
decades because of human over-harvesting for the pet trade. A study conducted in
Connecticut found that the abundance of Bog turtles declined steadily over a period of
twenty years until the population finally dropped to zero in 1992. The cause of such a
decline was not predation, disease, or road mortality but was a result of hikers taking
these turtles home as pets (Gibbs et al. 2007). The pet trade and illegal collection of
turtles is more of an issue on a global scale than in Northern New York, however, it has
been listed as a concern for populations throughout the state (Personal Communication
with Tom Langen, 2007).
Invasive Species
The introduction and expansion of invasive species has also been a threat for
turtle populations in Northern New York. Although it may not be the most detrimental
threat, the excessive growth of invasive plant species in wetlands can interfere with turtle
33
population abundance. A prime example of an invasive plant species in Northern New
York is the Purple Loosestrife (Lythrum salicaria). Purple Loosestrife is an exotic
wetland perennial plant that was introduced from Europe in the late 1800’s from ships
coming into the New England region. The construction of canals and waterways helped
the spread and growth of Purple Loosestrife into New York State and particularly into the
St. Lawrence River Valley. This invasive plant has spread throughout the Northeastern
U.S. into Southern Canada and even into the Midwest, promoted by irrigation systems
and the commercial spread of the plant for horticultural purposes. The Purple Loosestrife
has had many detrimental impacts on the natural wetlands of New York including
displacing native plant species, eliminating natural food sources for the native wildlife in
the region, and causing a general disturbance to the natural structure and functioning of
these habitats. However, the endangered Bog Turtle has been observed to be the one
turtle species that is particularly affected by the invasion of Purple Loosestrife. The Bog
Turtle greatly utilizes wetland habitats and rocky areas for basking, however, these are
consequently the areas that Purple Loosestrife has invaded particularly in the St.
Lawrence Valley. Without suitable habitat taken over by invasive plant species, the Bog
Turtle is forced out of its natural setting to find new basking areas. This greatly increases
mortality risk of the species (Malecki, 1993). Similarly, the habitat of the Blanding’s
turtle has also been threatened by the Purple Loosestrife in Northern New York as well as
in surrounding states. Phragmites (Phragmites australis) or an invasive reed species has
been listed in the top twenty most invasive plant species in New York State and has also
posed many threats to the Blanding’s turtle. Phragmites were first noticed in the late
1990’s, and since the discovery of these invasive species in turtle habitats is relatively
34
new, it is necessary for more research to be conducted on the effects these plants have on
turtles such as the Blanding’s in New York (Congdon and Keinath, 2006).
Government Issues:
The first New York State Law to protect herpetofauna was implemented in 1905
in order to stop excessive turtle harvesting by European immigrants, who were using
these species as a food source. The “Forest, Fish and Game” law was also amended at
this time in order to include Wood and Box turtles, species which were especially
susceptible to over-harvesting (Gibbs et al. 2007). The current legal protection of Bog,
Wood, Blanding’s, and Spotted turtles involves government agencies on both federal and
local levels. Four New York reptiles (the Bog, Wood, Eastern Box, and Common Map
turtles) are listed federally under the Convention on International Trade in Endangered
Species of Wild Flora and Fauna (CITES). This convention allows international trade of
certain species only when abundance of these species is high enough that such trade is
sustainable. Other federal organizations involved in the protection of threatened or
endangered herpitiles in the United States is the US Fish and Wildlife Service (USFWS),
which administers the Federal Endangered Species Act (ESA). Bog turtles were the only
species of the four we chose which are protected under this act (Gibbs et al. 2007). The
Endangered Species Act prohibits Bog Turtle collection and other activities such as
habitat destruction or degradation, interstate sale, and export or import of the species (U.S.
Fish and Wildlife Service, 1997). The USFWS also administers the Lacy Act, which
“makes it unlawful to import, export, transport, buy or sell any species, including
amphibians and reptiles, taken or possessed in violation of federal, state, or tribal
35
law”(Gibbs et al. 2007). Under this act, removal of federally protected species (such as
the Bog Turtle) across state boundaries is prohibited without a permit.
On a state level, the Environmental Conservation Law (ECL) separates all NY
flora and fauna into two separate categories, “protected” and “unprotected” species.
Unprotected species may be harvested from the wild under specific guidelines and
restrictions (usually a hunting, trapping, or fishing license is required). Most amphibians
were listed as “small game” species under this act, which placed them under the
“unprotected” category (with the exception of several threatened or endangered species)
until 1974, when the law was amended to give the New York State Department of
Environmental Conservation (NYS DEC) the authority to regulate amphibian harvesting
(Gibbs et al. 2007). The first list of NY endangered species was adopted in 1974 and of
the four species (Wood, Bog, Spotted, and Blanding’s turtles) only included Bog Turtles.
Species labeled as endangered under this law may not be taken, transported, harvested, or
sold without proper licensing from the DEC. Since then this law has been modified to
allow the protection of threatened species and the list now includes Blanding’s Turtles.
As special concern species, Wood and Spotted turtles are not protected under this law
(Gibbs et al. 2007). The NYS DEC also requires that special permits are acquired before
releasing pets into the wild. The introduction of these often non-native turtle species may
interfere with native species through habitat and resource competition and may also alter
gene pools by breeding with native species.
A critical aspect of protecting endangered and threatened New York turtle species
is preserving the wide variety of habitats required by these herpitiles. The preservation of
wetlands is particularly important as these habitats provide breeding, nesting, feeding
36
grounds, and shelter for many threatened and endangered amphibians, reptiles, and
waterfowl (NYSDEC-Freshwater Wetlands Program 2007). The New York Freshwater
Wetlands Act provides some protection to wetlands larger than 12.4 acres as well as a
100 ft “buffer zone” immediately surrounding the habitat. Yet this act does not protect
many of the smaller, more temporary wetlands which are critical habitats to turtles. It is
up to local governments to designate certain of these smaller habitats as “wetlands of
unique importance.” The St. Lawrence Wetland and Grassland Management District was
created to “improve the exemplary fish and wildlife resources in the St. Lawrence Valley
by working with local communities and private landowners to enhance fish and wildlife
populations” (St. Lawrence Wetland and Grassland Management District 2007).
Although this branch of the USFWS focuses on protecting waterfowl in the St. Lawrence
Valley, turtle species may also benefit from the restoration and protection of smaller
wetland habitats. The St. Lawrence WGMD has been successfully working with private
landowners to conserve and enhance wildlife habitat on a local and small scale. The US
Fish and Wildlife Service also established a similar program in New York called
“Partners for Wildlife.” This program encourages private landowners to set aside portions
of their land for wildlife cover and restores small wetlands at no cost to landowners.
Landowners in turn benefit by being able to observe birds, amphibians, and reptiles in
their backyards (A helping Hand for Waterfowl 2001).
Stakeholders
The issue of turtle population decline and the process of working towards
conserving these threatened and endangered species is one that involves many different
stakeholders. Within this case study, we are defining stakeholders as any individual or
37
group that plays a role in this issue in any way. A variety of interests, conservation values,
and practices are represented with each different individual and/or organizations that are
stakeholders within the issue of turtle decline in Northern NY. Although there are many
different parties involved, six groups were identified to be the primary stakeholders in
this issue. These include: wildlife, conservationists and conservation organizations, the
general public, road management, developers, and the state government.
Wildlife
An obvious yet not always recognized stakeholder in this issue is the wildlife or
the turtle species themselves. Their intrinsic right to exist, their ecological importance,
and the pure fact that humans have inflicted great disturbance on these populations are all
reasons why wildlife hold a stake in this issue. The four turtle species that have been
discussed, the Bog Turtle, the Wood Turtle, Blanding’s Turtle, and the Spotted Turtle are
all important stakeholders in this issue simply because they are most affected by both the
conservation efforts and negative anthropogenic activities outlined in this study.
Conservationists and Organizations
A significant amount of time in this study was spent on talking with concerned
professors and delving into the work and research of conservation groups focused on
turtle populations in Northern New York. Concerned professors, conservationists, and
conservation organizations are additional parties that have quite a bit of say and impact
on threatened and endangered turtle species of New York. Many professors such as
Glenn Johnson at the State University of New York- Potsdam and Tom Langen at
Clarkson University have shown an active interest in conserving the turtle populations of
New York and have consequently dedicated a large amount of their time to research on
38
these species. Professors and researchers can have a large impact on turtle conservation
by increasing general awareness and promoting an interest on behalf of protecting native
turtle populations. For example on March 12, 2007, Glenn Johnson and five others
including Alvin Breish, an amphibian and reptile specialist for the Department of
Conservation in Albany, produced the first book ever published about amphibian and
reptile decline in New York State. This comprehensive compilation of history, turtle
ecology, threats, past and current conservation efforts and an abundance of other
information will prove extremely valuable promoting future awareness and hopefully
interest in turtle conservation (Johnson et al., 2007).
One of the most significant impacts that these professors and researchers can have
on turtle populations in NY is through providing credible research that can further
increase the scientific knowledge available on these threatened species and encourage
additional studies on how better to conserve them. For example, Langen is currently
working extensively on conducting turtle surveys on the roads in Northern New York in
hopes to better understand the mortality patterns and to develop the most efficient and
beneficial culvert and barrier development plan. Langen has been working for quite a few
years on this project, and his primary focus is to develop plans for turtle protection on
Route 68, four miles west of Potsdam (Watertown times 2004). Although Langen has
made new discoveries about road mortality rates in Northern New York by identifying
high mortality “hotspots”, he has expressed that we have merely brushed the surface in
terms of research and there is a definite need for additional studies (Langen, 2007).
Professors have also contributed a great deal of research in large group projects, as seen
in the case of the National Recovery Plan for the Blanding’s Turtle in Nova Scotia,
39
Canada. Out of the 16 members on the recovery team, 6 of them were Biology professors
from Acadia University in Nova Scotia. Together this team worked to establish recovery
goals, objectives, strategies, and actions that would conserve and protect the declining
Blanding’s turtle population in the region (Herman et al., 2003).
The work of researchers, however, could not be completed if it was not for the
gracious funding of state and local conservation organizations. These conservation
organizations also conduct their own studies as well as hold valuable seminars and
forums to increase awareness and allow discussion between concerned individuals and
activists on how better to conserve turtle populations. One such conservation group is the
New York Turtle and Tortoise Society (NYTTS), a non-profit organization working
towards the conservation of turtle species in the state through preservation of habitat,
spread of awareness, and education (NYTTS, 2007). The NYTTS seems to have a hand
in many different areas of turtle conservation including seminars in which zoologists,
veterinarians, conservationists, and other experts speak about specific issues facing turtles.
Various campaigns and educational outreach efforts have been made through the
organization of open forums, the publication of brochures, and the promotion of a turtle
poster contest in different schools (NYTTS, 2007).
Finally, the New York State Department of Environmental Conservation
(NYSDEC) is one of the primary stakeholders when it comes to this issue of turtle
conservation within the state. The NYSDEC has funded numerous turtle research projects
from the restoration of wetland and upland habitats for Blanding’s turtles in Dutchess
County, to wetland conservation programs throughout the entire state, and road mortality
studies in St. Lawrence County. The NYSDEC also conducts many of its own studies on
40
turtle species. With the gracious funding from the DEC, Glenn Johnson discovered
Blanding’s turtle populations living on the side of the road near the proposed Wal-Mart
site on Route 11 between Canton and Potsdam in the spring of 2006 (Watertown Times
2006). However, the NYSDEC did not just provide funding but also started conducting
studies and field surveys soon after Johnson’s findings in order to define the range of
Blanding’s species and understand more about the presence of Blanding’s in St.
Lawrence County (Watertown Times 2006). This is just one example of the many
research grants and studies that the NYSDEC is involved in when it comes to threatened
and endangered turtle populations in the state.
Perhaps the most significant contribution the NYSDEC has made for statewide
turtle populations is the creation of the Amphibian and Reptile Atlas or Herpetofauna
“herp” project. This was a ten year project from 1990 to 2000 that monitored and
recorded the distributions of the herps. throughout the state in order to increase the
knowledge base and develop successful conservation strategies. The herp. atlas identifies
each species of turtle found in New York State and provides a general description, life
history characteristics, habitat preference, status, threats, as well as conservation needs on
all species (NYSDEC, 2000).
General Public
Another stakeholder in this issue of turtle conservation is the general public.
These are the people regularly driving on state roads and their interest or lack thereof can
have a great impact on management, development, and conservation decisions in the
future. If the general public has no interest in turtle conservation, there will be a lack of
activism on their part to help protect the declining turtle populations, and therefore
41
support for conservation efforts will be minimal. From our survey and through our
discussions with both Tom Langen and Glenn Johnson, it was apparent that there was a
lack of general awareness in Northern New York status of turtles in the region. Although
many people seemed to be aware of the presence of Painted, Snapping, and the
Blanding’s turtles in some cases, more rare and endangered species were not recognized.
This lack of awareness is problematic when it comes to protecting the turtles in Northern
New York because could lead to a lack of public opposition to detrimental human
impacts threatening these populations. For example, if the general public was not made
aware of the Blanding’s turtle populations in the proposed Wal-Mart site there would be
no interest or support in the protection of this wildlife species.
Road Management
It is clear that road mortality is a significant threat on turtle populations in the
state; therefore the New York State Department of Transportation (NYSDOT) is one of
the primary stakeholders. The first priority of NYSDOT is the safety and efficiency of
their roads throughout the state, however, since this is the department responsible for the
maintenance and creations of new roads, their actions directly affect the nesting and
migration routes of turtles throughout the state. NYSDOT has played a more significant
role in the issue of turtle population decline as more research and plans to develop
culverts and barriers on roadways in order to aid turtle nesting and migration and reduce
road mortality. In 2004, Tom Langen and Glenn Johnson were provided with a grant
from the NYSDEC to design and test an experimental barrier and passage system for
turtles on Highway 68 near the Upper and Lower Lakes Wildlife Management area.
Through this project, many individuals from the NYSDOT were involved in this plan,
42
including an Environmental Specialist, the region 7 Environmental Coordinator, and the
Resident Engineer for St. Lawrence County. Because they have developed new roadways
without implementing structures to reduce amphibian road mortality, the NYSDOT can
be perceived as a stakeholder that has a negative effect on the issue, however, they also
have the ability to make a positive impact as well. In terms of the experimental barrier
and passage system, most of the construction materials for the barriers were purchased by
NYSDOT and the actual barriers were also installed by NYSDOT management crews
(Gibbs et al. 2007).
Developers
Human development and the loss of habitat is considered to be the most
detrimental and permanent threat to turtle populations in New York State. The rapid
development of business, housing expansions, and other infrastructures pose a major
threat to wetland turtle habitats in particular. Because of this developers themselves can
be considered as another stakeholder (Wetland Connections). With economic interests at
the forefront, developers are infringing on natural habitats in northern New York and
often these practices often conflict with turtle populations. Michael Klemens, senior
conservationist of the Wildlife Conservation Society and an active member of the
NYTTS has given many speeches and even written a book on the local effects that sprawl
and development has on wildlife populations (NYTTS, 2007). Klemens is a
conservationist and therefore has had many interactions with developers. He states that it
is important for conversationalists to belong to both regional and local land use planning
committees in order to get ideas, opinions, and research into a more public light (NYTTS,
2007). Klemen’s work illustrates the extent of the impact that developers have on habitat
43
degradation, and more specifically on the habitats of threatened and endangered turtles in
New York. The fact that developers pose a threat to turtle populations through potential
habitat loss, but also have the ability to help conserve populations by consulting and
compromising with conservationists, makes this group a prominent stakeholder with
great impact on this issue.
State Government
Finally, the New York State Government is a significant stakeholder in terms of
developing laws and regulations that protect turtle populations within the state. If the
government did not implement any laws or regulations on the collecting and/or exporting
of turtle species, it is difficult to know if the state would have nearly as many turtle
populations still alive today. The St. Lawrence Wetland and Grassland Management
District of the U.S. Fish and Wildlife Service, a governmental sector of the Department
of the Interior has also played an active role in conserving New York turtle populations.
This St. Lawrence district of the U.S. Fish and Wildlife service has had quite an impact in
terms of providing funds for research, technical assistance for research, conducting public
outreach and awareness programs, and promoting partnerships with landowners under
programs such as the Wetland Reserve Program and the Wildlife Habitat Incentive
Program (USFWS, 2000).
Solutions
Parameters:
According to a report prepared for the USDA in the Rocky Mountain region on
Blanding’s Turtle threats and conservation, in “areas with uncontaminated wetlands,
relatively large areas of associated nesting habitat, and minimal road mortality,
44
Blanding’s Turtle populations are able to remain stable”(Congdon et al. 2006). Thus any
conservation strategy implemented in NY State must take these factors into account in
order to best protect Blanding’s and other endangered and threatened turtles in Northern
New York from further decline. In the human impacts section above, we identified the
main threats to Wood, Bog, Blanding’s, and Spotted turtles to be nest predation
(primarily by raccoons and skunks), road mortality, and habitat degradation and
fragmentation due to urbanization and development. We chose not to include the invasive
species and the pet trade a main threat because the pet trade is not a large factor
contributing to the decline of these species in Northern NY, and little is known about the
effects of invasive species on any of our four herpitiles (personal communication with
Glenn Johnson). In order to successfully increase the abundance and distribution of these
threatened and endangered turtle species, all of these issues must be incorporated into an
acceptable solution. We hope to create a “conservation blueprint” which could be put into
use for future herpitile protection both in St. Lawrence Country and in other locations
facing similar turtle population decline.
In addition to the solutions suggested by this “conservation blueprint,” we
propose that more research needs to be done within St Lawrence County and also on a
much larger scale (across the United States) on the distributions, metapopulation
dynamics, habitat preferences, and biology of Wood, Bog, Blanding’s, and Spotted
Turtles. In an effort to effectively assess the status of Bog Turtles across the United States,
the US Fish and Wildlife Service in the late 1970s requested states within the Bog
Turtle’s range to gather distribution data. These reports suggested that the species was not
as rare as first speculated but “secretive” and often difficult to find. Findings, however
45
“were flawed by being based upon the smallest scale of Bog Turtle occurrence, the
individual turtle, with little information concerning populations, metapopulation
dynamics, or patterns of ecosystem fragmentation and degradation that were occurring
throughout much of the Bog Turtle’s range”(Klemens 2000 ). When the USFWS later
funded research which took into account metapopulations, the number of previously
proposed Bog Turtle sites were greatly reduced (Klemens 2000). Thus research which
takes an ecosystem perspective must be performed in the North Country for all four
herpitiles in order to insure that conservation actions are the most productive in ensuring
the survival of these species. Also year to year fluctuations in the distribution and
population size of Wood, Blanding’s, Bog, and Spotted turtles must be measured in
Northern NY in order to assess the effectiveness of the conservation measures
implemented. An estimation of abundance can be achieved using aquatic trapping and dip
netting techniques to mark and recapture individual turtles. Also data on the number of
nests destroyed by predators and male to female ratios are useful in determining
predation and road mortality rates (as females are more susceptible to road mortality)
(Congdon et al. 2006).
We performed a survey which assessed the knowledge and apathy of 15 local
residents of Canton, NY about endangered turtles of the area. This written survey was
completed on April 15th outside of the Canton P and C grocery store. Sample questions
asked were: Do you know what species of turtles are in the Northern New York
area? aka St. Lawrence County? Do you know how well the turtle populations are doing
in Northern New York? Have you heard anything in the media about turtle populations
thriving, declining, and staying the same? Is the success of turtle populations in Northern
46
New York an important issue or a concern/priority of yours? Most of the residents
surveyed listed only Snapping and Box turtles as species occurring in the North Country,
although Blanding’s Turtle was also mentioned by two community members. One
resident cited a Watertown Daily Times article on the discovery of Blanding’s Turtles at
the proposed Wal-Mart site on route 11 as the source of her knowledge about the rare
specie. Most community members surveyed, however, were not aware about declining
turtle populations both on a local and international scale. When asked whether or not they
were concerned about rapidly decreasing turtle abundance the typical response was “not
particularly, however, if I knew more information about turtle population decline, I
probably would be more concerned.” In many cultures turtles are a symbol of longevity
and wisdom and are included in countless myths and legends. Despite our fascination
with this animal, our survey results showed that many people are unaware that turtle
populations are facing a worldwide decline. An effort must be made in St Lawrence
County to promote awareness about the rare and endangered turtles of the area through
educational programs and media exposure. If more people are aware that several species
of this wise and charismatic animal are in danger of extinction, than they will be more apt
to support and fund conservation programs and legal measures designed to protect Wood,
Bog, Blanding’s, and Spotted Turtles.
Possible Solutions:
Possible solutions which would help reduce the threats of road mortality, habitat
degradation and fragmentation, and nest predation are sited in Table 5.
47
Table 5. A list and description of possible solutions to reduce the threats of nest predation, habitat degradation, fragmentation, and road mortality on Blanding’s, Wood, Bog, and Spotted Turtles in St. Lawrence County, NY. Solution Description Threat Reduced Feasibility
Headstarting
The hatching and rearing of turtles in captivity and later releasing them into the wild Nest Predation High
Creation of Artificial Habitat
The creation of artificial wetlands and nesting sites
Habitat Degradation
High to Medium
Implementation of Road Structures
The implementation of culverts and barriers which "funnel" turtles into passageways under roads Road Mortality High
Elimination of predators from St Lawrence County
The complete removal of turtle nest predators such as skunks and opossums using trapping methods Nest Predation Low
Stopping the Spread of Invasive Species and Eliminating Current Invasives
The complete removal of invasives such as Purple Loostrife which further degrade turtle habitat
Habitat Degradation Medium
Eliminating Wetland Fragmentation
The elimination of wetland fragmentation by prohibiting activities such as urban development and road construction
Habitat Fragmentation Low
48
Networking Wetlands
The networking of multiple wetlands through the use of corridors
Habitat Fragmentation
High
Reducing Habitat Pollution
The reduction of pesticide and sediment runoff due to urbanization and agriculture
Habitat Degradation
Medium to Low
Feasibility and Best Solutions:
Solutions that have little to no chance of being implemented in Northern New
York are eliminating predators from St. Lawrence County and preventing any sort of
wetland fragmentation in the area. Although the trapping and removal of turtle nest
predators (such as skunks and possums), would successfully increase juvenile turtle
populations, we thought that this method was time consuming and expensive. Because
predator populations are so abundant, this tactic would involve many constant hours of
trapping and would not guarantee that nest predation would be significantly reduced. We
thought that a more feasible solution to this threat is headstarting, or the hatching of rare
and endangered turtles in captivity and later release into the wild once they reach a size
large enough to evade high predation rates. It would also not be feasible to completely
eliminate wetland fragmentation throughout the county because most development
projects and road routes would not be willing to rethink plans just to save Blanding’s,
Bog, Wood, and Spotted Turtles. Alternative road routes around wetland habitat are also
not always achievable. We thought that more feasible solutions to wetland fragmentation
were to create barriers and culverts to allow safe turtle movement from one fragment to
49
another under roadways (this would also effectively decrease road mortality), and also to
connect fragmented habitat using natural corridors. Because of the large amount of
agriculture in St Lawrence County we also thought that convincing farmers to either
eliminate pesticide use or to leave a buffer strip of natural vegetation around their fields
to reduce sediment and pesticide runoff into wetlands would be difficult. Although this
tactic would indeed decrease turtle habitat degradation, habitat loss due to development
poses a much greater threat to turtles in Northern NY than wetland pollution due to
agriculture. In Nebraska, however, Blanding’s Turtles are highly susceptible to the
pesticide Dieldrin which was applied to corn fields for insect control and accumulated in
wetland habitats. Although the use of this pesticide has been halted since 1974, the
chemical is very persistent in the environment (Congdon et al. 2006). Pesticide runoff is
not as large of a problem in Northern NY and we thought that more funds and effort
should go into protecting smaller wetlands from draining and filling than limiting
chemical and sediment runoff. Similarly, the elimination of invasive plant species in
wetlands would also decrease turtle habitat degradation, yet little research has been done
on the effects of these species on Blanding’s, Wood, Bog, and Spotted Turtles. Despite
lack of research, it seems that invasive species do not pose a significant threat on turtle
abundance. The effort and funding required to remove these species would be better spent
implementing the solutions described below.
Headstarting:
Hatching success of nests in the wild is often low because of high rates of
predation. Additional mortality may occur as a result of nest flooding and ice action
caused by cold weather. A study on hatching and emergence success of Blanding’s Turtle
50
eggs in Kejimkijk National Park, Canada showed that out of 1054 recorded eggs, 615
(58%) failed due to nest flooding, ice action, or predation (Table 6)(Standing et al. 2000).
Table 6. The hatching and emergence success of Blanding’s turtle eggs in Kejimkujik National Park, Novia Scotia, Canada from 1987 to 1997 (as modified from Standing et al. 2000).
Because all four turtle species have high rates of hatchling mortality, headstarting, or
hatching and rearing of turtles in captivity until they are old enough to discourage
predation, is an increasingly popular tactic in increasing juvenile abundance. The purpose
of this process is to boost population abundance by eliminating the threat of nest
predation. A major concern regarding this solution is that it does not address the main
issues causing population decline and instead provides more of a temporary fix. We
propose that headstarting should be used in addition to strategies that will be useful in
conserving adults as well (such as habitat protection, habitat networking, and reducing
road mortality)(Forrester 2005). Headstarting has already proven to be a valuable
technique in increasing turtle abundance in NY. An effort was begun in 1995 by Dr.
George Kollias at Cornell University to collect hatchlings from the wild, raise them for a
year in captivity, and release them into the wild. More than half of these turtles were later
recaptured, indicating that this process was successful (Gibbs et al. 2007). Headstarting
51
has also been proven effective in curbing nest predation and juvenile mortality rates of
Blanding’s Turtles in Nova Scotia, Canada. Since 2002 researchers have been collecting
hatchlings in regions where Blanding’s populations have declined over the years and
raising them at the Oaklawn Farms Zoo. This study is working to create an effective
headstarting technique which is most beneficial to turtle populations (Gibbs et al. 2007).
Habitat Protection and Networking:
A plan of protecting critical habitats required by Wood, Blanding’s, Spotted, and
Bog turtles in New York State has begun to take form under the Hudson River
Restoration Project. This project aims to restore the signature fisheries in the Hudson
River estuaries, conserve river and shore line habitat, and protect a maximum amount of
biodiversity in the Hudson River Valley. By 2009 this project proposes “to enlist 200
partners, 60 municipalities, 100 willing landowners, and 40 businesses and nonprofits-in
conserving 50,000 acres of six target habitats and representative species”(Environmental
News Service 2005). All four turtle species were included as representative species and
this restoration project plans to protect seasonal woodland pools used by Spotted Turtles
(as well a variety of other species such as Wood Frogs and Fairy Shrimp), shoreline
corridors along rivers preferred by Wood Turtles, unique natural areas which support
endangered species such as Bog Turtles, and wetlands which support Blanding’s Turtles
(as well as Bog, Wood, and Spotted Turtles) (Environmental News Service 2005). When
implemented, this 368 million dollar plan will allow all four herpitile species the chance
to increase in abundance and lower their risks of extinction.
Although only a small fraction of the land in St. Lawrence County is able to be set
aside for conservation purposes, it is clear that wetlands need to be adequately protected
52
as an increasingly larger percentage of these ecosystems are degraded and destroyed due
to filling and draining to make space for development. The conservation of the small
permanent wetlands in Northern New York which are not large enough to be included
under The New York Freshwater Wetlands Act would help to minimize the impacts of
turtle habitat degradation and fragmentation in the area. Yet because of the complex life
cycles and migration patterns of these four endangered and threatened turtles,
conservation efforts which focus on wetlands alone are not sufficient. Blanding’s, Wood,
bog, and spotted turtles all migrate from wetlands to surrounding uplands to nest and
forage. Wood Turtles in particular are less aquatic than the other three species and also
require meadows, fields, and mixed forests as foraging and breeding grounds. Scientists
have estimated that the minimally effective buffer distance around a permanent wetland
which also accommodates the foraging and breeding cycles of these species is 300 ft
(Gibbs. et al. 2007). We suggest that the protection of these small wetland habitats and a
surrounding 300ft buffer zone of upland habitat in Saint Lawrence County would provide
the required habitat for rare herpitiles in the area and help to increase their abundance.
Certain man made habitat alterations such as agricultural fields and roads can be
major barriers to turtles which require a diverse array of habitat. If native forest and
grassland “corridors” are maintained as a connection between two separate wetland
habitats, turtles can move between them freely. As mobility of these species is increased
by the implementation of these corridors, genetic diversity within the population would
also increase as subpopulations previously divided would be able to interbreed (Gibbs et
al 2007). This increase in genetic diversity would allow for a greater diversity of traits at
an individual level within a species, and thus allow for the evolution of traits which may
53
render the species better suited for survival in the future. The implementation of corridors
would also decrease road mortality as the number of turtles crossing roads in order to go
from one fragmented habitat to another would decline if the two habitats were connected
by a natural corridor. Corridors would also insure that turtles would not be forced to cross
large open agricultural fields where predation risks are high.
Creation of Artificial Habitat
The creation of restored or artificial wetland and nesting habitats is a possible
solution to reduce the threats of road mortality and habitat degradation on Blanding’s,
Wood, Bog, and Spotted Turtles in Northern NY. This tactic has already been completed
in Dutchess County, NY in May 1997 to replace Blanding’s Turtle nesting and wetland
habitats due to a school expansion in the area. This project created 1.4 ha of shrubby
wetlands interspersed by vegetated upland sandy soils used for nesting (Figure 12).
During the 1997 nesting season, eleven female Blanding’s Turtles were radiotracked. Of
these 11, 9 used the artificial habitat and 11 used the newly constructed nesting sites
(Kiviat et al. 2000). This study also raised the point that although restoration projects may
be beneficial to a target specie there is little data on potential negative impacts of these
artificial habitats on non-targeted species. Also due to the complexity of natural wetland
habitats, it is difficult to recreate every abiotic and biotic factor in an artificial habitat.
Thus we propose that restoration projects should only be used to provide additional
habitat and not as a substitute for natural habitat. The creation of artificial nest habitat is
often a simple and cost effective way of reducing road mortality, since many females use
sandy roadsides as nesting sites. The NYS DEC completed a survey in 1987 which
tracked Blanding’s Turtles in Dutchess County in order to measure their migration and
54
nesting patterns. This survey discovered that the Blanding’s were migrating over 3,300 ft
across an open field to nest in the sandy roadsides of a nearby housing development. In
order to reduce the risks of road mortality to this Blanding’s Turtle population, the NYS
DEC and the Nature Conservancy created artificial nesting habitat much nearer to the
pond. Later studies showed that this “preserve” was home to one of the largest
populations of Blanding’s Turtles, 80 adults in total (Gibbs et al. 2007). Artificial nest
habitat construction in road mortality “hotspots” of St Lawrence County may help to
reduce this threat and increase Wood, Blanding’s, Bog, and Spotted Turtle abundance.
A B
C D
55
Figure 12. Artificial habitat improvement in Dutchess County, NY by Creative Habitat Corporation. Picture A shows an upland field before the excavation and installation of salvaged wetland sod and tees and shrubs in the same field in picture B. Picture C shows another field before the installation of a pool and wetland sod (D) (figure modified from http://creativehabitatcorp.com/habitat.html). Reducing Road Mortality:
The impacts of road mortality on Blanding’s, Wood, Bog, and Striped Turtles can
be reduced using culverts and barriers on the sides of roadways prone to high levels of
turtle mortality. The culvert system involves tunnels placed under the roads to allow
turtles to safely cross. Turtles are funneled into the culverts and kept off roads by
permanent drift fence systems which are backfilled with gravel on the side closest to the
road to ensure that they do not get trapped on the road. This system was first
implemented in Albany County in 1999 on a highway which was prone to high levels of
amphibian and reptile mortality. This culvert and barrier structure reduced herpitile road
mortality to zero where levels had previously been quite high (Gibbs et al. 2007).
Prototype culverts have also been implemented by researchers from Clarkson University
to reduce turtle mortality along Route 68 in Canton, NY (Figure 13).
Figure 13. Pictures of the prototype culvert and barrier system implemented along Route 68 in Canton, NY in order to reduce amphibian and reptile road mortality (photos courtesy of Glenn Johnson).
56
These culverts are most productive in areas where turtle habitat is fragmented by roads or
other areas where high turtle road mortality has been noted (Watertown Daily Times
2004). In order to identify these “mortality hotspots” in Northern NY, Langen et al. tested
the effectiveness of walking and driving surveys and also predictive models (using GIS)
to identify roadways along which the culvert and barrier system would be most beneficial.
This information is useful for road management agencies who are concerned about the
impacts of road mortality as a hazard to both wildlife and motorists (Langen et al. 2007).
We propose that further research to improve the design of the culvert/barrier system and
also additional efforts to locate “road mortality hotspots” in St Lawrence County would
be a productive way to increase rare and endangered adult turtle populations.
Implementing Solutions
Headstarting is a feasible solution, particularly when combined with other
conservation measures. However, obtaining the funds and the creation of rehabilitation
facilities are the most pressing matters in order for successful implementation (Forrester
2005). In order for headstarting to be successful and to avoid the possibility of negative
effects such as problematic and unnatural development of turtles, headstarting should be
used with a combination of other conservation techniques. Headstarting should be used
along with captive breeding and habitat protection through the creation of wetland
reserves and the prohibiting of development in certain areas. Spreading education through
programs such as posting informational brochures in major towns in St. Lawrence
County and giving presentations at local North Country schools in conjunction with
headstarting would all be methods to achieve this goal.
57
We propose that in order to protect the permanent wetlands necessary to Wood,
Blanding’s, Spotted, and Bog turtles, we must modify Freshwater Wetlands Act to
protect wetlands smaller than 12.4 acres in areas where populations of these four turtles
are present. The 100ft upland buffer around wetlands protected by this act must also be
extended to encompass a 300ft buffer zone instead of the current 100ft buffer zone. This
expanded zone would better provide Blanding’s, Wood, Spotted, and Bog turtles with
required foraging and nesting habitat (Comprehensive Wildlife Conservation Strategy
2005). In order to acquire the land necessary to network and link fragmented wetland
habitat we would use a combination of federally funded incentive programs, conservation
easements, and land trusts (Groom et al., 2006)
The creation of new habitats or wetland habitat restoration can prove to be an
extremely beneficial method in conserving turtle populations. Rebuilding or creating new
habitat is particularly relevant in the context of today’s age of rapid development and the
fact that habitat loss is one of the primary causes of turtle decline. However, the process
of creating new habitat is incredibly expensive and complex. A prime example of how
complex and expensive the creation of artificial habitat can get can be seen in a New
York State wetland restoration project in order to combat the expansion of a local public
school and provide new habitat for Blanding’s turtles in the area. The process involved
the installation of a groundwater monitoring system, capturing and release of turtles to
new site, the construction of wetland, upland nesting areas as well as a drought refuge
pool. A barrier was also constructed between the school, and sedge and fern tussocks,
woody hummocks, mature shrubs, organic soil, smaller trees, and even microbial and
invertebrate communities were all translocated to the restoration area. The extensive
58
procedure itself, the research, and the monitoring necessary to ensure that this new
wetland is successful came to a total cost of US $1,300,000, with additional related costs
such as any necessary adaptations to the monitoring process still needing to be
incorporated (Klemens 2000). It is clear that with implementing this plan, funding is the
number one issue, and the NYSDEC, the NYTTS, and other conservation groups could
serve as good sources for these funds. Although the costs can be tremendous, we felt this
method was feasible if kept on a relatively small and simple scale. There are methods that
are relatively inexpensive such as the construction of a generalized replacement wetland
or a pond. It does not have all the intricacies and complexities, but it is a simulation of a
wetland habitat and therefore provides turtles with a habitable location (Klemens 2000).
In order for the creation of new habitat to be successful, the implementation of smaller
scale and less expensive projects are necessary for this to be a realistic solution.
Reducing road mortality is an important and feasible solution to help conserve
turtle populations of Northern New York, however, a significant amount of funds paired
with additional research will be necessary to create the most efficient plan to develop the
culvert and barrier infrastructure. Tom Langen states the fact that although the culverts
and barriers are extremely beneficial in protecting turtles from road mortality, the
expense is too much to implement them at all road crossings (Fram 2004). Therefore,
additional research is necessary in order to identify the areas of road that are crossed the
most by turtles to ensure that the infrastructure is being placed in areas that will be the
most beneficial. Perhaps if the Biology Departments within Northern New York
Universities encouraged more student-professor research projects on native turtle
populations and University research grants increased, more information on road mortality
59
could be obtained. The NYSDEC also grants money from the U.S. Fish and Wildlife
Service to support and fund related research efforts or practices within the state.
Therefore, it is probable that the most beneficial department to send proposals for funding
to is the NYSDEC since they are likely to be the most equipped to support such research
endeavors (Fram 2004).
As populations of Spotted, Bog, Wood, and Blanding’s Turtles face increasing
threats of road mortality, nest predation, habitat degradation, and fragmentation in
Northern NY, it is important that effort is increased in protecting these rare and
endangered species. An implementation plan should include:
1. Increasing local awareness about the endangered and threatened turtle species in
Northern NY and education about what they can do individually to ensure the
survival of these species (by keeping an eye out for turtles on roadways, and
supporting legislation which proposes to protect smaller wetlands, ect.)
2. Increasing research efforts which assess turtle population distributions,
population demographics, and monitor the success of implemented solutions
(such as roads barriers and culverts, artificial habitat, ect.)
3. Implementing barrier and culvert systems along roadways prone to high rates of
turtle mortality.
4. Modifying The Freshwater Protection Act to include critical wetlands smaller
than 12.4 acres and expanding the required 100ft “buffer zone” to 300ft around
these wetlands
60
5. Creating networks between wetland habitats by acquiring land through a
combination of federally funded incentive programs, conservation easements,
land trusts, and land donations.
6. Creating artificial wetland habitat and nesting sites when applicable.
7. Headstarting turtle species prone to high rates of nest predation.
The implementation of these conservation measures in Northern NY will ensure
that future generations have the opportunity to observe Wood, Blanding’s, Spotted,
and Bog Turtles as these charismatic creatures are in dire need of our concern and
aid.
61
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