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Book Nesting in reptiles natural and anthropogenic threats and evolutionary responses

Download or read book Nesting in reptiles natural and anthropogenic threats and evolutionary responses written by J. Sean Doody and published by Frontiers Media SA. This book was released on 2023-01-06 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Habitat Selection Nesting Ecology and Mating Behavior of the Wood Turtle Glyptemys Insculpta

Download or read book Habitat Selection Nesting Ecology and Mating Behavior of the Wood Turtle Glyptemys Insculpta written by Alexandra T. Vlk and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis focuses primarily on a disturbed wood turtle population located in Otsego County, NY with comparisons to turtles in protected sistes located in Putnam County, NY and CT and Sussex County, NJ." -- Preface.

Book Factors Affecting Predation on Wood Turtle Glyptemys Insculpta Nests in the Western Upper Peninsula of Michigan

Download or read book Factors Affecting Predation on Wood Turtle Glyptemys Insculpta Nests in the Western Upper Peninsula of Michigan written by Jenny Lynn Rutherford and published by . This book was released on 2010 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding predator foraging habits and nesting ecology of turtles is essential for the long term management of predator and prey. The objectives of this study were to (1) collect descriptive data on nesting ecology, including nest predation rate of a Wood Turtle population in the Upper Peninsula of Michigan, (2) investigate potential cues used by predators for location of Wood Turtle nests, and (3) determine effects of the distance of nests from a river on predation. Natural nests (identified by oviposition behavior of females) were marked and monitored for predation. Additionally, simulated nests were created with 1 of 4 treatments applied: soil disturbance, turtle-scented water, soil disturbance and turtle-scented water, and distilled water (control). In a second experiment, artificial nests with buried chicken eggs were created at varying distances from the river and monitored for predation. Natural nest in this study experienced a low predation rate (4/7) compared to other studies. This result may be an artifact of small sample size or the remoteness of the study area, absence of human disturbance and resulting low density of raccoons. My results also suggest that nest predators used soil disturbance cues primarily for locating nests. Thus, applying a chemical cue to artificial nests in future empirical nest predation studies may be irrelevant. Nest predation decreased as nest distance from the river increased, which may have important conservation implications for future management plans.

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.

Book Spatial Ecology Population Structure and Conservation of the Wood Turtle Glyptemys Insculpta in Central New England

Download or read book Spatial Ecology Population Structure and Conservation of the Wood Turtle Glyptemys Insculpta in Central New England written by Michael T. Jones and published by . This book was released on 2009 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Ecology and Conservation Biology of the North American Wood Turtle Glyptemys Insculpta in the Central Appalachians

Download or read book Ecology and Conservation Biology of the North American Wood Turtle Glyptemys Insculpta in the Central Appalachians written by Steven P. Krichbaum and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book In the Cold and Near the Edge

Download or read book In the Cold and Near the Edge written by Travis Brian White and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Herein, I examine two aspects of overwintering ecology of wood turtles (Glyptemys insculpta) in Nova Scotia, Canada. The research was conducted in a region that supports a large population of G. insculpta despite being located near the northeastern edge of the species' range. Using radio telemetry, I monitored turtles across two consecutive winters to investigate microhabitat properties that are critical to hibernation in G. insculpta. The sample population overwintered in a range of habitats; some different from those reported elsewhere in the species' range. Conventionally, wood turtles rely on highly oxygenated rivers, and have been previously described as hypoxia-intolerant. Data from this study indicate that wood turtles are capable of surviving dormancy in hypoxic oxbows. Accordingly, I propose that G. insculpta is a hypoxia-tolerant species, and further hypothesize that a diversification of overwintering strategies may allow the local population to adapt to environmental stochasticity associated with life at the edge of the species' range. I also examined communal hibernation and seasonal site fidelity and show the first known accounts of male-female congregating, mating, and synchronized spring emergence in G. insculpta, and suggest that communal hibernation is linked to increased mating opportunities. Using historical telemetry data for a subsample of mutual turtles, long-term patterns in seasonal site fidelity revealed that among adult females, differing life history strategies may exist. Although migratory females are often viewed as outliers by decision makers, the survival and genetic contribution of these 'risk takers' may be critical to local populations, and ultimately effect evolution of the species. Above all, the findings have implications for conservation in that they warrant a new definition of critical overwintering habitats for G. insculpta, and highlight why the dismissal of outlying seasonal movement data can result in inadequate protection of corridors between hibernacula and nesting sites.

Book Ecology and Conservation of the Wood Turtle Glyptemys Insculpta at Delaware Water Gap National Recreation Area

Download or read book Ecology and Conservation of the Wood Turtle Glyptemys Insculpta at Delaware Water Gap National Recreation Area written by Christina Marie Castellano and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Spatial Ecology and Conservation of the North American Wood Turtle Glyptemys Insculpta in a Fragmented Agri forest Landscape

Download or read book Spatial Ecology and Conservation of the North American Wood Turtle Glyptemys Insculpta in a Fragmented Agri forest Landscape written by Raymond A. Saumure and published by . This book was released on 2004 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The impact of agricultural practices on wood turtle (Glyptemys insculpta) movements and survivorship was investigated in a fragmented agri-forest landscape over two years. Agricultural activities and machinery contributed to the death of 20% of radio-tracked turtles. Annual survivorship of adults was 0.904 and 0.868 and for juveniles it was 0.815 and 0.831 for 1998 and 1999, respectively. Mutilation rates in adults were 90% +/- 3% in both years; in contrast, the maximum rate in juveniles was 57%. Setting the cutting height of disc mowers to 100 mm would increase harvest yields, reduce wear on machinery, decrease soil erosion, and reduce turtle mortality and mutilation rates. The concepts of integral, statistical, and linear range are introduced as distinct estimators of turtle movements. Since integral ranges include all habitats critical to survival, they provide an important contribution to our knowledge of imperiled species. Statistical ranges are stable and easily promote within and between study comparisons. Linear ranges quantify migratory and ranging movements. Thread-trailing techniques were used to record the fine-scale movements of six adult male G. insculpta translocated to an experimental hayfield patch-matrix. Although patch size had no effect on move length or path sinuosity, habitat structure did. Paths were generally straighter and move length longer in the harvested portion of a hayfield. Apparent habitat boundaries were shown to be permeable. Subjects exhibit three movement phases: agitation dispersal, local search, and ranging. Thus, G. insculpta exhibit predetermined movement patterns and move to maximize the likelihood of locating resources, while minimizing the probability of revisiting previously searched areas. Recent changes in agricultural practices and machinery are having a decidedly negative impact on G. insculpta. This study provides new insights into the movements of G. insculpta. Such knowledge will be an es" --

Book Habitat Usage Movement Patterns and Home Range Size of Wood Turtles Glyptemys Insculpta in a Suburban Habitat

Download or read book Habitat Usage Movement Patterns and Home Range Size of Wood Turtles Glyptemys Insculpta in a Suburban Habitat written by Jessica Williams and published by . This book was released on 2013 with total page 188 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: