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Advisor: Harold W. Avery, Ph.D.
A fascinating look at the diamond-backed terrapin—an important, iconic, and imperiled American reptile. The diamond-backed terrapin is not only a uniquely evolved and beautiful turtle, it also has a long history as a vital American food source. Once so numerous that people reportedly grew tired of eating them, diamond-backed terrapins are greatly reduced in numbers today and have become an icon of salt marsh conservation. Considerably diminished in some areas and struggling to survive, this distinctive brackish water turtle is the focus of intense conservation efforts. In Ecology and Conservation of the Diamond-backed Terrapin, leading terrapin researcher Willem M. Roosenburg and experienced science editor Victor S. Kennedy have brought together a group of expert scientists to summarize our current understanding of terrapin biology, physiology, behavior, and conservation efforts. Over the course of 19 comprehensive chapters, contributors • review the latest information on this charismatic species • provide a detailed summary of the terrapin's natural history • explain the threats to terrapin population stability throughout their range • examine ongoing conservation efforts to ensure the reptile's survival • present convincing arguments for the value of the diamond-backed terrapin as an estuarine indicator organism • use the terrapin as a model for studying the consequences of exploitation and environmental degradation on long-lived species This exceptional book provides pivotal information for estuarine and turtle biologists, terrapin enthusiasts, natural historians, educators, conservationists, resource managers, and students. Ecology and Conservation of the Diamond-backed Terrapin is the definitive volume on this important American reptile. Contributors: Benjamin K. Atkinson, Harold W. Avery, Patrick J. Baker, Ralph E.J. Boerner, Russell L. Burke, Joseph A. Butler, Randolph M. Chambers, Paul E. Converse, Brian A. Crawford, Rusty D. Day, Dana J. Ehret, J. Whitfield Gibbons, Kathryn M. Greene, Leigh Anne Harden, Andrew S. Harrison, Kristen M. Hart, George L. Heinrich, Dawn K. Holliday, Victor S. Kennedy, Shawn R. Kuchta, Lori A. Lester, Jeffrey E. Lovich, John C. Maerz, David Owens, Allen R. Place, Taylor Roberge, Willem M. Roosenburg, Richard A. Seigel, Amanda Southwood Williard, Edward A. Standora, Anton D. Tucker, Diane C. Tulipani, Timothy J. Walsh, Thane Wibbels, Will Williams, Roger C. Wood
Increasing urbanization of the Barnegat Bay estuary in New Jersey has subjected northern diamondback terrapins to substantial habitat loss. Understanding whether terrapins have homing behavior, and determining the types of orientation cues they use to aid in this behavior, is important for conservation management. To test their homing behavior, nine non-gravid female terrapins were outfitted with biotelemetry tracking devices and data loggers and were displaced 4 km north and/or south. Eight of nine terrapins successfully returned home; the one terrapin that did not return home was inadvertently captured in a crab pot. Urbanization and shoreline development of the north displacement location may be causing terrapins to make quicker movements home compared to the 'natural' south displacement location. A terrestrial arena that blocked terrapins from perceiving visual landmarks was used to test orientation in both male and female terrapins that had been captured to the south or east of the testing site. Only male terrapins captured from the east exhibited apparent homeward orientation, suggesting that terrapins orient toward water rather than home. Terrapins from the south tested under overcast skies and during the afternoon, and females captured from the south, tested separately, had easterly orientation, suggesting there was orientation toward open water as well within these groups. While displaced terrapins were able to return home, terrapins tested in the arena appeared to orient toward water, suggesting that the orientation cues used in homing may not be available to the terrapins on land, within the arena. Understanding both homing behavior and orientation will give managers insight into how terrapin home ranges might be protected. Since terrapins are able to return home after displacement, protection measures will be needed for all potential home ranges of the terrapins and relocation efforts may require the displacement of terrapins to more distant areas.
One of 21 climate change synthesis and assessment products commissioned by the U.S. Climate Change Science Program (CCSP), this report examines the effects of sea level rise, impacts on society, and opportunities to prepare for those consequences, focusing on the eight coastal states from New York to North Carolina. Using scientific literature and policy documents, the report describes potential changes to barrier.
The book is full of detailed and useful information on traditional fishing techniques woven into a narrative that is interesting in its own right. MacKenzie concludes his book with descriptions of trips he has taken with contemporary fishermen in which he vividly relates the day-to-day existence of the people who still pursue their livelihood on the water.
Description: The only comprehensive guide to New Jersey's most imperiled species