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Conservation and Management
Although bats are often thought of as cave dwellers, many species depend on forests for all or part of the year. Of the 45 species of bats in North America, more than half depend on forests, using the bark of trees, tree cavities, or canopy foliage as roosting sites. Over the past two decades it has become increasingly clear that bat conservation and management are strongly linked to the health of forests within their range. Initially driven by concern for endangered species—the Indiana bat, for example—forest ecologists, timber managers, government agencies, and conservation organizations have been altering management plans and silvicultural practices to better accommodate bat species. Bats in Forests presents the work of a variety of experts who address many aspects of the ecology and conservation of bats. The chapter authors describe bat behavior, including the selection of roosts, foraging patterns, and seasonal migration as they relate to forests. They also discuss forest management and its influence on bat habitat. Both public lands and privately owned forests are considered, as well as techniques for monitoring bat populations and activity. The important role bats play in the ecology of forests—from control of insects to nutrient recycling—is revealed by a number of authors. Bat ecologists, bat conservationists, forest ecologists, and forest managers will find in this book an indispensable synthesis of the topics that concern them.
With all new illustrations, color photographs, revised species accounts, updated maps, and a sturdy flexible binding, this new edition of the authoritative guide to bats in Texas will serve as the field guide and all-around reference of choice for amateur naturalists as well as mammalogists, wildlife biologists, and professional conservationists. Texas is home to all four families of bats that occur in the United States, including thirty-three species of these important yet increasingly threatened mammals. Although five species, each represented by a single specimen, may be regarded as vagrants, no other state has a bat fauna more diverse, from the state’s most common species, the Brazilian free-tailed bat, to the rare hairy-legged vampire. The introductory chapter of this new edition of Bats of Texas surveys bats in general—their appearance, distribution, classification, evolution, biology, and life history—and discusses public health and bat conservation. An updated account for each species follows, with pictures by an outstanding nature photographer, distribution maps, and a thorough bibliography. Bats of Texas also features revised and illustrated dichotomous keys accompanied by gracefully detailed line drawings to aid in identification. A list of specimens examined is located at batsoftexas.com.
Bats of the United States and Canada is the only complete and accessible guide to all forty-seven species of bats found in the region. Bats are among the world’s most fascinating creatures. The only mammals capable of true flight, these animals are marvels of evolution. A wide variety of species lives in the United States and Canada, ranging from the California leaf-nosed bat to the Florida bonneted bat, from the eastern small-footed bat to the northern long-eared Bat. Fact-filled and easy to use, this guide includes accurate range maps, detailed biological information, and useful identification tips. J. Scott Altenbach's stunning photographs accompany each species account, capturing the amazing diversity of these winged mammals. This guide also includes helpful information on the natural history of bats from across the globe. Bats today face ever-increasing danger from destruction of habitat, new technologies such as wind turbines, chemical toxicants, and devastating diseases like white-nose syndrome, which is killing millions of cave bats in the United States and Canada. The authors discuss these threats and others as well as the latest conservation efforts to protect bats around the world. Written by three of the world’s leading bat experts, this volume is the most comprehensive guide to the bat species of the United States and Canada available.
Combining Cloning and Stem-Cell Therapy
Providing the philosophical, practical, and theoretical leverage for abandoning evolution and development in favor of engineering human beings, Becoming Immortal examines the directions biological change might take if civilization were to take charge of its own destiny. With the aid of embryonic manipulation, cloning, and stem-cell therapy, immortality would seem within the reach of future generations. The question is, “Do we presently have the wisdom to undertake creating immortal organisms?” The author examines every facet of this question, from theory to practice, and provides an answer through an in-depth analysis of life and death.
Their Vision, Chemical Senses, and Language
Over half a century of brilliant scientific detective work, the Nobel Prize-winning biologist Karl von Frisch learned how the world, looks, smells, and tastes to a bee. More significantly, he discovered their dance language and their ability to use the sun as a compass. Intended to serve as an accessible introduction to one of the most fascinating areas of biology, Bees (first published in 1950 and revised in 1971), reported the startling results of his ingenious and revolutionary experiments with honeybees.
In his revisions, von Frisch updated his discussion about the phylogenetic origin of the language of bees and also demonstrated that their color sense is greater than had been thought previously. He also took into consideration the electrophysiological experiments and electromicroscopic observations that have supplied more information on how the bee analyzes polarized light to orient itself and how the olfactory organs on the bee's antennae function.
Now back in print after more than two decades, this classic and still-accurate account of the behavior patterns and sensory capacities of the honeybee remains a book “written with a simplicity, directness, and charm which all who know him will recognize as characteristic of its author. Any intelligent reader, without scientific training, can enjoy it.”—Yale Review
Covering the behavior and ecology of the northern fur seal, this book is a model long-term study of marine mammals, one that tests theory through both observation of undisturbed behavior and manipulative experiments on individuals. Here Roger Gentry draws on nearly two decades of research on three different islands to show how behavior among these seals changes with population size, sex ratio, and environment, to explain the behavior of the population beginning with individuals, and to generalize the results to other members of the eared seal family. In so doing, he offers one of the most comprehensive studies of its kind on any marine mammal species to date.
Gentry shows that the species is driven by very different behavioral traits than have been assumed for it in the past. His book analyzes behavior on scales of hours to lifetimes, investigates the mating system, considers processes that underlie the mating system (site fidelity, behavioral estrus, and the development of territoriality), and addresses specific aspects of maternal strategy (female attendance behavior, pup growth, seasonal influences, and the effects of continental shelf width). Gentry contributes to knowledge about marine mammals by providing a very specific basis for interspecies comparisons, and he suggests a link between population trend and environmental regime shifts. He also guides the debate over seal mating systems from an interpretive to an empirical or experimental basis.
Originally published in 1997.
The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Swordfish, Sailfish, Marlin, and Other Gladiators of the Sea
Knowledge Hubs for the Life Sciences
Biological resource centers (BRCs) collect, certify, and distribute organisms for use in research and in the development of commercial products in the pharmaceutical, agricultural, and biotechnology industries. They maintain a large and varied collection, including cell lines, micro-organisms, recombinant DNA material, biological media and reagents, and the information technology tools that allow researchers to access biological materials. BRCs have established themselves as a crucial element in the life science innovation infrastructure, from their early impact on virology, to their crucial role in addressing cross-culture contamination in the 1970s, to their current leadership in promoting a global biodiversity network. Today they confront new challenges, resulting from shifts in the nature of biological research, the interaction between public and private researchers, and the increasing focus on biosecurity. This book provides a systematic economic assessment of the impact of biological resource centers through their role in facilitating cumulative knowledge in the life sciences and building on their roles as knowledge hubs institutions that facilitate the transfer of scientific and technical knowledge among members of a research community. The knowledge hubs framework offers insight into how to develop and evaluate policy proposals that impinge on the control and access of biological materials. Stern argues that science and innovation policy must be premised on a clear understanding of the role that knowledge hubs play and the policy mechanisms that encourage their sustained growth and effectiveness.