Download or read book Food Habits and Population Density of the Common Snapping Turtle Chelydra Serpentina in West Virginia written by Peter Decker Major and published by . This book was released on 1973 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Circular West Virginia Agricultural Experiment Station written by West Virginia University. Agricultural Experiment Station and published by . This book was released on 1960 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Suitability Index Models written by Brent M. Graves and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Circular written by and published by . This book was released on 1981 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1978 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Circular written by Harry V. Wiant and published by . This book was released on 1983 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A dietary analysis of the common snapping turtle Chelydra serpentina in the tidal marshes of the Hudson River written by Patrick J. Baker and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States July 1966 June 1973 written by and published by . This book was released on 1979 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Notes on the Habits of the Common Snapping Turtle Chelydra Serpentina Linn in Central New York written by Stuyvesant Morris Pell and published by . This book was released on 1941 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1988 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the Maryland Herpetological Society written by Maryland Herpetological Society and published by . This book was released on 1977 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Turtles of the United States and Canada written by Carl H. Ernst and published by . This book was released on 1994 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive compilation on North American turtles for the last 25 years. Recognition, karyotype, fossil record, distribution, geographic variation, confusing species, habitat, behavior, reproduction, biology, growth and longevity, food habits, populations, and a key to species identification are discussed for fifty-six species.

Download or read book Bulletin of the Florida Museum of Natural History written by and published by . This book was released on 1995 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Culture Studies with the Common Snapping Turtle Chelydra Serpentina written by Maxwell Hayden Mayeaux and published by . This book was released on 1994 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biology of the Snapping Turtle Chelydra Serpentina written by Anthony C. Steyermark and published by . This book was released on 2008-03-31 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume synthesizes all that is known about the common snapping turtle to provide an up-to-date and comprehensive resource on the species' evolution, physiology, behavior, and life history. Anthony C. Steyermark, Michael S. Finkler, Ronald J. Brooks, and a team of experts detail the systematics, energetics, growth patterns, sex determination, and population genetics of snapping turtles and devote special attention to the fossil record of the snapping turtle family Chelydridae.

Download or read book Evaluating the Role of Common Snapping Turtles Chelydra Serpentina in Freshwater Ponds of North Carolina written by Hailey Shoptaugh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Trophic cascades have frequently been observed in aquatic ecosystems. For example, the common snapping turtle (Chelydra serpentina), can reduce prey populations and trigger long-lasting phytoplankton blooms after short visits. This study aimed to disentangle both direct and indirect effects of common snapping turtles in experimental ponds. Each experimental pond contained food webs differing in predator presence with large and small apex predators (Chelydra serpentina), mesopredator presence (Notophthalmus viridescens), and herbivorous prey (Rana catesbeiana tadpoles). I predicted a direct effect of turtle predation on newts and tadpoles and that snapping turtle predation on newts would cause higher tadpole survival and growth, which indirectly would decrease algal biomass. Tadpoles had the largest masses in food webs with large turtles and newts. Tadpoles with newts and large turtles were further along developmentally than tadpoles in other food webs. Newt survival differed between food webs and appeared to be lowest in food webs with small turtles. There was no statistical difference in algal biomass among food webs at the conclusion of the experiment. Overall, these results highlight that a trophic cascade may occur in freshwater ponds following short term visits by common snapping turtles, but their role is complex and may be size dependent."--Abstract.

Download or read book The Status of Snapping Turtles chelydra Serpentina in Virginia written by Benjamin Charles Colteaux and published by . This book was released on 2017 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snapping turtles (Chelydra serpentina) are being harvested in unprecedented numbers in the United States (US) to meet the needs of international markets. Over three million live snapping turtles from farm and wild caught stock were exported from the US to Asia in 2012-14 alone. In the Commonwealth of Virginia, records indicate that 29,860 snapping turtles were commercially harvested between 2000 and 2015. Size limits are often used to regulate harvest pressure in snapping turtles and other game species. I analyzed the historic harvest of eleven US states to test the efficacy of minimum-size limit regulations at reducing commercial harvest pressure. Further, I conducted a four-year mark-recapture study on three Virginia waterways that have each experienced a different level of historic commercial harvest. As part of the larger mark/recapture project, I conducted radio telemetry on 23 turtles to examine seasonal, body size, and sex-specific effects on home range size of snapping turtles in a lotic system. I incorporated survival and growth rates from this study, demographic rates from the literature, and state-collected harvest rates into a hybrid age/stage population matrix model to estimate the population growth rate at three harvest levels (0%, 21%, 58%) that were estimated based on annual commercial landing reports on file with the Virginia Department of Game and Inland Fisheries. I used the model to test population viability under multiple size limit regulations, and used sensitivity analyses to identify adult stages most critical to the overall population growth rate. Based on model estimates, size-limits were effective at reducing harvest by 30-87% in years with high harvest pressure. However, most size limit regulations result in the removal of larger breeding adults, which has been shown to be detrimental to long term population viability. Based on radio-telemetry data, I found evidence that snapping turtles utilize lotic and lentic habitats differently, which can have implications for management of this iconic species. Matrix population modelling predicted that population densities at the moderate and high harvest site were reduced by 47% and 62%, respectively, when compared to the no harvest site. Model results indicate that, while an increase to the minimum-size limit in 2012 protected a larger portion of the population, that the commercial harvest of snapping turtles in the Commonwealth of Virginia is not sustainable under current state regulations. Our analysis suggests that minimum-size limits of 35.6 cm curved carapace length or greater will maintain viable populations by protecting a larger portion of reproducing snapping turtles within a population.