Download or read book Proceedings of the First International Symposium on Kemp s Ridley Sea Turtle Biology Conservation and Management written by Charles Wax Caillouet and published by . This book was released on 1989 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Turtles of Mexico written by John M. Legler and published by Univ of California Press. This book was released on 2013-06-29 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Turtles of Mexico is the first comprehensive guide to the biology, ecology, evolution, and distribution of more than fifty freshwater and terrestrial turtle taxa found in Mexico. Legler and Vogt draw on more than fifty years of fieldwork to elucidate the natural history of these species. The volume includes an extensive introduction to turtle anatomy, taxonomy, phylogeny, biogeography, and physiology. A key to the turtles of Mexico is included along with individual species accounts featuring geographic distribution maps and detailed color illustrations. Specific topics discussed for each species include habitat, diet, feeding behavior, reproduction, predators, parasites, growth and ontogeny, sexual dimorphism, growth rings, economic use, conservation, legal protection, and taxonomic studies. This book is a complete reference for scientists, conservationists, and professional and amateur enthusiasts who wish to study Mexican turtles.
Download or read book The Last Tortoise written by Craig Stanford and published by Harvard University Press. This book was released on 2010-05-15 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tortoises may be the first family of higher animals to become extinct in the coming decades. They are losing the survival race because of what distinguishes them, in particular their slow, steady pace of life and reproduction. The Last Tortoise offers an introduction to these remarkable animals and the extraordinary adaptations that have allowed them to successfully populate a diverse range of habitats—from deserts to islands to tropical forests. The shields that protect their shoulders and ribs have helped them evade predators. They are also safeguarded by their extreme longevity and long period of fertility. Craig Stanford details how human predation has overcome these evolutionary advantages, extinguishing several species and threatening the remaining forty-five. At the center of this beautifully written work is Stanford’s own research in the Mascarene and Galapagos Islands, where the plight of giant tortoise populations illustrates the threat faced by all tortoises. He addresses unique survival problems, from genetic issues to the costs and benefits of different reproductive strategies. Though the picture Stanford draws is bleak, he offers reason for hope in the face of seemingly inevitable tragedy. Like many intractable environmental problems, extinction is not manifest destiny. Focusing on tortoise nurseries and breeding facilities, the substitution of proxy species for extinct tortoises, and the introduction of species to new environments, Stanford’s work makes a persuasive case for the future of the tortoise in all its rich diversity.
Download or read book After the Grizzly written by Peter S. Alagona and published by Univ of California Press. This book was released on 2020-02-25 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book traces the history of threats to species and habitat in California, from the time of the Gold Rush to the present. The author shows how, over the course of more than a century, scientists and conservationists came to view the fates of endangered species as dependent on the ecological conditions and human activities in the places where those species lived. The story begins with the tale of the state's extinct mascot, the California grizzly, and the conservation movements and laws that followed its disappearance. The second half of the book focuses on four high-profile endangered species: the California condor, the desert tortoise, the San Joaquin kit fox, and the Delta smelt. The author offers an account of how Americans developed a civil system in which imperiled species serve as proxies for broader conflicts about the politics of place. The book concludes that the challenge for conservationists in the twenty-first century will be to expand habitat conservation beyond protected wildlands to build more diverse and sustainable landscapes.
Download or read book Biocommunication of Animals written by Guenther Witzany and published by Springer Science & Business Media. This book was released on 2013-11-08 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every coordination within or between animals depends on communication processes. Although the signaling molecules, vocal and tactile signs, gestures and its combinations differ throughout all species according their evolutionary origins and variety of adaptation processes, certain levels of biocommunication can be found in all animal species: (a) Abiotic environmental indices such as temperature, light, water, etc. that affect the local ecosphere of an organism and are sensed, interpreted. (b) Trans-specific communication with non-related organisms. (c) Species-specific communication between same or related species. (d) Intraorganismic communication, i.e., sign-mediated coordination within the body of the organism. This book gives an overview of the manifold levels of animal communication exemplified by a variety of species and thereby broadens the understanding of these organisms.
Download or read book The Sonoran Desert Tortoise written by Thomas R. Van Devender and published by University of Arizona Press. This book was released on 2019-04-15 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 pet—as 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.
Download or read book Rivers for life written by Benazir Ahmed and published by IUCN. This book was released on 2014-11-18 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication includes papers that were part of thirty-five oral and nine poster presentations on various themes presented by eminent researchers/ practitioners at the international symposium on “River Biodiversity: Ganges-Brahmaputra-Meghna River System” facilitated and supported by IUCN.
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.
Download or read book Biology of North American Tortoises written by National Biological Survey (U.S.) and published by . This book was released on 1994 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lonesome George written by Henry Nicholls and published by Palgrave Macmillan. This book was released on 2006-04-04 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lonesome George is a 5ft long, 200lb tortoise aged between 60 and 200. In 1971 he was discovered on the remote Galapagos island of Pinta, from which tortoises had supposedly been exterminated by greedy whalers and seal hunters. He has been at the Charles Darwin Research Station on Santa Cruz island ever since, on the off-chance that scientific ingenuity will conjure up a way of reproducing him and resurrecting his species. Meanwhile a million tourists and dozens of baffled scientists have looked on as the celebrity reptile shows not a jot of interest in the female company provided. Today, Lonesome George has come to embody the mystery, complexity and fragility of the unique Galapagos archipelago. His story echoes the challenges of conservation worldwide; it is a story of Darwin, sexual dysfunction, adventure on the high seas, cloning, DNA fingerprinting and eco-tourism.
Download or read book Captive Propagation for Recovery of Species Under ESA written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Environment and Natural Resources and published by . This book was released on 1994 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by Jim Van Abbema and published by . This book was released on 1997 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: In July 1993 a remarkable group of ecologists, conservationists, land managers, government officials, & policy-makers representing 25 nations gathered at Purchase, New York, to attend a conference devoted to the conservation, restoration, & management of tortoises & turtles. Offering just a glimpse of the troubled conservation status of the world's 270-plus species of tortoises & turtles, the 77 papers & summary reports (as well as abstracts of presented posters) included in the proceedings represent the combined efforts of more than 130 authors & 35 reviewers. The material presented in this 494-page volume, organized by the major subject areas of the 1993 conference, roughly corresponds to the daily sessions of the meeting: Direct & Indirect Threats to Habitat; Direct Loss of Population - Disease, Predation, & Human Exploitation; Breeding, Repatriation, & Relocation; Applications of Demography, Ecology, & Genetics to Conservation; Status Reports; Species Recovery & Management Strategies; Reserves & Programs; & Integrated Management Strategies & Public Policy. Abstracts of the presented posters appear in a separate section. "Together the papers in this volume lay the groundwork for what one might call a theoretical basis for the science of chelonian conservation, an exercise that has never been attempted before."--Peter C. H. Pritchard, author ENCYCLOPEDIA OF TURTLES. Direct inquiries to: [email protected].
Download or read book Lonesome George written by NA NA and published by Springer. This book was released on 2016-09-23 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lonesome George is a 5 foot long, 200 pound tortoise, between 60 and 200 years old. In 1971 he was discovered on the remote Galapagos island of Pinta, from which tortoises had supposedly been extinct for years. He has been at the Charles Darwin Research Station on Santa Cruz island ever since, on the off-chance that scientific ingenuity will conjure up a way of reproducing him and resurrecting his species. Meanwhile, countless tourists and dozens of baffled scientists have looked on as the celebrity reptile shows not a jot of interest in the female company provided. Today, Lonesome George has come to embody the mystery, complexity and fragility of the unique Galapagos archipelago. His story echoes the challenges of conservation worldwide; it is a story of Darwin, sexual dysfunction, adventure on the high seas, cloning, DNA fingerprinting and eco-tourism.
Download or read book NOAA Technical Report NMFS written by and published by . This book was released on 1984 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Reproductive Biology of the Chelonia written by Gerald Kuchling and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comparative view of chelonian reproduction and discusses ecophysiological implications for their captive breeding. Chelonians, with their protective rigid armour, are a phylogenetically antique group of reptiles which radiated to occupy niches from the open waters of the oceans, to rivers, creeks, swamps, forests, savannahs, and deserts. A few North American turtle species have been well studied, but until recently reproductive data on other chelonian species have been scarce. The way in which chelonians adjust their conservative mode of reproduction to the various requirements of their habitats and life styles is the theme of this book; the physiology of reproduction and its interplay with ecological conditions are its central subjects.
Download or read book Proceedings of Symposium Desert Tortoise Council written by Desert Tortoise Council and published by . This book was released on 1997 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology Exploitation and Conservation of River Turtles written by Don Moll and published by Oxford University Press. This book was released on 2004-04-08 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The underlying theme of this book is that a widespread, taxonomically diverse group of animals, important both from ecological and human resource perspectives, remains poorly understood and in delcine, while receiving scant attention from the ecological and conservation community. This volume proposes a comprehensive overview of the world's river turtles' ecology, conservation, and management. It begins with a categorization of taxa which inhabit flowing water habitats followed by information on their evolutionary and physical diversity and biogeography. Within the framework of ecology, the authors discuss the composition of river turtle communities in different types of lotic habitats and regions, population dynamics, movements, reproductive characteristics and behavior, predators, and feeding relationships. In a conservation and management section, the authors identify and evaluate the nature and intensity of factors which threaten river turtle survival--almost all of which involve direct human exploitation or indirect effects of human induced habitat alteration and degradation. They then list and evaluate the various schemes which have been proposed or employed to halt declines and restore populations, and make recommendations for future management plans for specific species and regions. In closing, they state their viewpoint concerning future research directions and priorities, and an evaluation of future prospects for survival of the world's river turtle species.
