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Book Microhabitat Parameters and Spatial Ecology of the Spotted Turtle Clemmys Guttata

Download or read book Microhabitat Parameters and Spatial Ecology of the Spotted Turtle Clemmys Guttata written by Thomas P. Wilson and published by . This book was released on 2002 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Habitat Use and Spatial Ecology of Blanding s Turtles emydoidea Blandingii and Spotted Turtles clemmys Guttata in Northeast Indiana

Download or read book Habitat Use and Spatial Ecology of Blanding s Turtles emydoidea Blandingii and Spotted Turtles clemmys Guttata in Northeast Indiana written by Christine E. Barlow and published by . This book was released on 1999 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Turtles of the United States and Canada

Download or read book Turtles of the United States and Canada written by Carl H. Ernst and published by JHU Press. This book was released on 2009-06-15 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner, 2011 Book Award, The Wildlife Society2009 Outstanding Academic Title, Choice Ernst and Lovich’s thoroughly revised edition of this classic reference provides the most updated information ever assembled on the natural histories of North American turtles. From diminutive mud turtles to giant alligator snappers, two of North America’s most prominent experts describe the turtles that live in the fresh, brackish, and marine waters north of Mexico. Incorporating the explosion of new scientific information published on turtles over the past fifteen years—including the identification of four new species—Ernst and Lovich supply comprehensive coverage of all fifty-eight species, with discussions of conservation status and recovery efforts. Each species account contains information on identification, genetics, fossil record, distribution, geographic variation, habitat, behavior, reproduction, biology, growth and longevity, food habits, populations, predators, and conservation status. The book includes range maps for freshwater and terrestrial species, a glossary of scientific names, an extensive bibliography for further research, and an index to scientific and common names. Logically organized and richly illustrated—with more than two hundred color photographs and fifty-two maps—Turtles of the United States and Canada remains the standard for libraries, museums, nature centers, field biologists, and professional and amateur herpetologists alike.

Book Revising a Habitat Suitability Model for Spotted Turtles Clemmys Guttata in Upstate New York

Download or read book Revising a Habitat Suitability Model for Spotted Turtles Clemmys Guttata in Upstate New York written by Caitlin Dailey and published by . This book was released on 2017 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In order to protect threatened and endangered species, their habitat needs to be adequately documented and assessed for conservation planning. The utilization of mapping programs such as ArcGIS can help researchers in determining the most optimal sites for a particular species in a given area. This research revises a previous habitat suitability model by Correa-Berger (2007) for the spotted turtle (Clemmys guttata) in nine counties of upstate New York. Using the same initial parameters for the creation of the seed sites and habitat requirements for spotted turtles that Correa-Berger used in his 2007 analysis, the model utilized updated Land Use/Land Cover (LULC) data, added a stream connectivity parameter, and added a calcium carbonate soil parameter in order to improve the model. The initial updated model did not fit well with the historical spotted turtle sightings from the NYSDEC. A second model was created using a simplified seed site methodology, an adjusted road width parameter, and eliminated the use of the DEC classified wetlands. The revised model captured 16 out of 33 turtle sightings within what was considered optimal sites. While the second model was more successful matching the historical spotted turtle sightings compared to the first model, analysis of model misses suggest the model could potentially be improved with the use of a locally created LULC classification using remote sensing techniques, expanding the stream connectivity parameters to include stream health, and using additional soil parameters."--Abstract.

Book Dissertation Abstracts International

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spotted and Wood Turtles Clemmys Guttata und Glyptemys Insculpta

Download or read book Spotted and Wood Turtles Clemmys Guttata und Glyptemys Insculpta written by Andreas S. Henning and published by . This book was released on 2016 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Threatened Turtle Species in Ohio and Michigan

Download or read book Threatened Turtle Species in Ohio and Michigan written by Austin C. Hulbert and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation efforts are urgently needed to reduce global biodiversity loss and to keep natural ecosystems intact. Turtles (Order Testudines) are important components of their ecosystems but are one of the most threatened vertebrate groups in the world due to habitat destruction, overexploitation, climate change, invasive species, and disease. To effectively conserve turtles, we need a detailed understanding of their spatial and population ecology, knowledge which is lacking for many declining species. Advancing technological methods are allowing researchers to address these research needs. One technological advancement is the reduction in battery size, which now allows researchers to attach miniature radio transmitters to hatchling and juvenile turtles and track them in their natural habitat. The ability to radio-track the early life stages of turtles allows researchers to study their survival, movements, and habitat needs, which are severely understudied compared to the adult life stages. Battery size reduction also allows for smaller GPS devices which automatically record locations, and which substantially reduces the time and labor required to physically locate individual animals. With this size reduction, researchers have started deploying GPS devices on small turtles; however, this method is in its early stages and requires assessment of its accuracy. Here, I used miniature radio transmitters to study the survival and dispersal of the hatchling stage of two threatened turtle species, the spotted turtle (Clemmys guttata) and Eastern box turtle (Terrapene carolina carolina), in oak savanna habitat of the Upper Midwest. I found hatchlings survival rates of both species from nest emergence through overwintering. Box turtle hatchling survival increased with less nest shade cover, which is associated with warmer nests, shorter incubation durations, and earlier nest emergence dates. Therefore, it is important for managers to maintain a range of ground cover microhabitats in nesting areas so turtles can match nest incubation conditions with current local conditions, while also maximizing hatchling survival. Additionally, I deployed GPS devices on adult spotted and Eastern box turtles to assess the reliability and accuracy of automatically recorded locations on small turtles across a range of habitat types. I found mixed support for habitat affecting accuracy of locations, but the number of satellites received and HDOP had large effects on accuracy of locations recorded by GPS devices. After screening locations based on number of satellites and HDOP, location accuracy was greatly increased. GPS devices are unlikely to be accurate for small, semi-aquatic turtle species but show promise for small, terrestrial turtle species. However, proper testing of GPS devices and methods of filtering their location data are needed to demonstrate their effectiveness when deployed on small turtle species, because unfiltered data can cause bias in ecological calculations, such as home range sizes. Overall, through the use of advancing technologies to track turtles, my research provides rare ecological data on hatchlings of threatened turtle species in the Oak Openings region, while also quantifying the effectiveness of GPS devices on these species.

Book American Doctoral Dissertations

Download or read book American Doctoral Dissertations written by and published by . This book was released on 2001 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spotted Turtle Clemmys Guttata Movement and Habitat Usage in a Heavily Managed Area of Michaux State Forest Pennsylvania

Download or read book Spotted Turtle Clemmys Guttata Movement and Habitat Usage in a Heavily Managed Area of Michaux State Forest Pennsylvania written by Tracey Michelle Librandi Mumma and published by . This book was released on 2003 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Natural History and Thermal Ecology of a Population of Spotted Turtles Clemmys Guttata and Wood Turtles Glyptemys Insculpta in West Virginia

Download or read book The Natural History and Thermal Ecology of a Population of Spotted Turtles Clemmys Guttata and Wood Turtles Glyptemys Insculpta in West Virginia written by Ariana N. Breisch and published by . This book was released on 2006 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Population Dynamics of the Spotted Turtle Clemmys Guttata on Carroll Island

Download or read book The Population Dynamics of the Spotted Turtle Clemmys Guttata on Carroll Island written by Wayne G. Landis and published by . This book was released on 1983 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The population dynamics and structure of the spotted turtle, Clemmys guttata, were studies from 1970 until 1982. Carroll Island was the site of chemical testing from post WW II until 1971. Special consideration was given to the impact upon the populations of turtles by the chemicals released on Carroll Island. Several findings are noteworthy. The number of juveniles on the island has steadily declined over the 12 years of sampling. The current (1982) population is half of that estimated for 1972-73. The proportion of females dropped as low as 0.25 of the population. Four possible hypotheses are delivered to explain the observations. The most likely explanations are that a temperature anomaly or natural catastrophe dramatically reduced the proportion of females present. At the same time the population of turtles overshot the carrying capacity of the environment after cessation of an artificial or natural constraint.

Book Navigating the Thermal Landscape

Download or read book Navigating the Thermal Landscape written by Geoffrey Norman Hughes and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal ecology studies of ectotherms, like turtles, have typically focused on a species' thermal preferences and tolerances, or on thermoregulation site selections; only recently have landscape-scale thermal ecology studies been performed. I examined the spatial and nesting ecology of wood turtles in Sudbury District of Ontario, Canada, in a thermal context. I also measured the thermal impacts of natural resource extraction on wood turtle habitat. Wood turtles (Glyptemys insculpta) cover a wide variety of terrestrial and aquatic habitats during their annual cycle, making them ideal for thermo-spatial studies. I tracked movements and thermal use of 15 radio-tagged adult turtles during the active season, comparing their selections to temperature monitoring stations spread in an array across the study area, to determine if the turtles are navigating a thermal landscape. Temperature had minimal influence on home range-scale movements, but possibly influenced movements at a smaller spatial scale. I compared the thermal landscape (using thermal imagery), soil moisture, and grain size distribution of 3 nesting beaches to determine the strongest predictor of nest-searching behaviour. Temperature range appeared to be an important cue, but females were apparently using a suite of cues to select their nest sites. I mapped the thermal landscapes of six sites: two relatively undisturbed wood turtle habitat sites, two recently-harvested forestry sites, and two active gravel pits, to find the effects of resource harvesting on wood turtle habitat. The undisturbed sites were cooler and less variable than the disturbed sites, and provided higher-quality thermal habitat. My results support the findings of previous studies: that temperature is a stronger driver of turtle behaviour at the micro-habitat scale than the home range scale, and that soil temperature co-varies with soil structural variables at the micro-habitat scale. The data from the habitat mapping provide useful information for conservation efforts when mitigating or rehabilitating wood turtle habitat.