Evaluating The Effectiveness Of Headstarting For Wood Turtle Glyptemys Insculpta Population Recovery
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Evaluating The Effectiveness Of Headstarting For Wood Turtle Glyptemys Insculpta Population Recovery
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Author : Damien I. Mullin
language : en
Publisher:
Release Date : 2019
Evaluating The Effectiveness Of Headstarting For Wood Turtle Glyptemys Insculpta Population Recovery written by Damien I. Mullin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Headstarting is a conservation strategy that assumes raising hatchling turtles to larger body sizes increases their survivorship compared to wild non-headstarted turtles. This increased survivorship should increase population growth rate relative to wild recruitment. There are, however, few published results of long-term population recovery using headstarting. The lack of demographic assessment of population recovery has led to an overall lack of quantitative assessment of the effectiveness of headstarting as a conservation action. Headstarting needs to be efficient and effective as a poorly executed headstarting project can result in species extinction given it is often used with critically endangered species. We released 3 cohorts of headstarted Wood Turtles (Glyptemys insculpta) with varying degrees of headstarting to determine if headstarting increases survivorship. I showed that headstarting turtles to a larger body size confers a survival advantage, and this survival advantage should increase population growth rate relative to wild recruitment. I then quantitatively assessed the effectiveness of a 15-year Wood Turtle headstarting program by modeling population-specific demographic parameters to evaluate recovery efforts, and determine the next phase of recovery. I found some evidence of population recovery, but also identified challenges and make several management recommendations that should enhance the success of the headstarting program. Overall, I have provided support for headstarting as an effective conservation strategy, with the caveat that all headstarting projects must be paired with management plans that maintain high adult and juvenile survival.
Biology Of Australasian Frogs And Reptiles
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Author : Gordon Clifford Grigg
language : en
Publisher:
Release Date : 1985
Biology Of Australasian Frogs And Reptiles written by Gordon Clifford Grigg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Amphibians categories.
Tortoises And Freshwater Turtles
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Author : IUCN/SSC Tortoise and Freshwater Turtle Specialist Group
language : en
Publisher: IUCN
Release Date : 1991
Tortoises And Freshwater Turtles written by IUCN/SSC Tortoise and Freshwater Turtle Specialist Group and has been published by IUCN this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Cheloniidae categories.
Freshwater Turtles
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Author : John Cann
language : en
Publisher: Steve Parish
Release Date : 2008-01-01
Freshwater Turtles written by John Cann and has been published by Steve Parish this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-01 with Turtles categories.
Wild Australia Guides are must-have, ready references for around the home, in the car or to be tucked into a backpack. The series features stunning photographs and compact text for quick and easy identification. Each species profile provides essential information about its identifying features, habitat, diet, distribution and breeding.
The Sonoran Desert Tortoise
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Author : Thomas R. Van Devender
language : en
Publisher: University of Arizona Press
Release Date : 2006-09-01
The Sonoran Desert Tortoise written by Thomas R. Van Devender and has been published by University of Arizona Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-09-01 with Science categories.
One of the most recognizable animals of the Southwest, the desert tortoise (Gopherus agassizii) makes its home in both the Sonoran and Mohave Deserts, as well as in tropical areas to the south in Mexico. Called by Tohono O'odham people "komik'c-ed," or "shell with living thing inside," it is one of the few desert creatures kept as a domestic petÑas well as one of the most studied reptiles in the world. Most of our knowledge of desert tortoises comes from studies of Mohave Desert populations in California and Nevada. However, the ecology, physiology, and behavior of these northern populations are quite different from those of their southern, Sonoran Desert, and tropical cousins, which have been studied much less. Differences in climate and habitat have shaped the evolution of three races of desert tortoises as they have adapted to changes in heat, rainfall, and sources of food and shelter as the deserts developed in the last ten million years. This book presents the first comprehensive summary of the natural history, biology, and conservation of the Sonoran and Sinaloan desert tortoises, reviewing the current state of knowledge of these creatures with appropriate comparisons to Mohave tortoises. It condenses a vast amount of information on population ecology, activity, and behavior based on decades of studying tortoise populations in Arizona and Sonora, Mexico, and also includes important material on the care and protection of tortoises. Thirty-two contributors address such topics as tortoise fossil records, DNA analysis, and the mystery of secretive hatchlings and juveniles. Tortoise health is discussed in chapters on the care of captives, and original data are presented on the diets of wild and captive tortoises, the nutrient content of plant foods, and blood parameters of healthy tortoises. Coverage of conservation issues includes husbandry methods for captive tortoises, an overview of protective measures, and an evaluation of threats to tortoises from introduced grass and wildfires. A final chapter on cultural knowledge presents stories and songs from indigenous peoples and explores their understanding of tortoises. As the only comprehensive book on the desert tortoise, this volume gathers a vast amount of information for scientists, veterinarians, and resource managers while also remaining useful to general readers who keep desert tortoises as backyard pets. It will stand as an enduring reference on this endearing creature for years to come.
Population Viability Analysis
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Author : Steven R. Beissinger
language : en
Publisher: University of Chicago Press
Release Date : 2002-05-04
Population Viability Analysis written by Steven R. Beissinger and has been published by University of Chicago Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-05-04 with Nature categories.
Many of the world's leading conservation and population biologists evaluate what has become a key tool in estimating extinction risk and evaluating potential recovery strategies - population viability analysis, or PVA.
Conservation Behavior
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Author : Oded Berger-Tal
language : en
Publisher: Cambridge University Press
Release Date : 2016-05-05
Conservation Behavior written by Oded Berger-Tal and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-05 with Nature categories.
An in-depth analysis of the impact conservation behaviour can have to develop practical tools to safeguard against biodiversity extinction.
Zoo Conservation Biology
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Author : John E. Fa
language : en
Publisher: Cambridge University Press
Release Date : 2011-08-18
Zoo Conservation Biology written by John E. Fa and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-18 with Nature categories.
In the face of ever-declining biodiversity, zoos have a major role to play in species conservation. Written by professionals involved in in situ conservation and restoration projects internationally, this is a critical assessment of the contribution of zoos to species conservation through evidence amassed from a wide range of sources. The first part outlines the biodiversity context within which zoos should operate, introducing the origins and global spread of zoos and exploring animal collection composition. The second part focuses on the basic elements of keeping viable captive animal populations. It considers the consequences of captivity on animals, the genetics of captive populations and the performance of zoos in captive breeding. The final part examines ways in which zoos can make a significant difference to conservation now and in the future. Bridging the gap between pure science and applied conservation, this is an ideal resource for both conservation biologists and zoo professionals.
Turtles Of The United States
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Author : Carl H. Ernst
language : en
Publisher:
Release Date : 1972
Turtles Of The United States written by Carl H. Ernst and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Nature categories.
Stewardship Of The Spiny Softshell Turtle Apalone Spinifera Spinifera
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Author : Scott D. (Scott David) Gillingwater
language : en
Publisher: London, Ont. : Upper Thames River Conservation Authority
Release Date : 2004
Stewardship Of The Spiny Softshell Turtle Apalone Spinifera Spinifera written by Scott D. (Scott David) Gillingwater and has been published by London, Ont. : Upper Thames River Conservation Authority this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Spiny softshell turtle categories.