Download or read book A Natural History of Amphibians written by Robert C. Stebbins and published by Princeton University Press. This book was released on 1997-01-26 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphibia, the animal group that includes frogs, toads, salamanders, and caecilians, contains more than 4,500 known living species and new ones are being discovered continuously. This book focuses on the natural history of amphibians worldwide, how interaction with their environment over time has affected their evolutionary processes and what factors will determine their destinies. 37 photos. 52 line illus.
Download or read book Cryobanking the Genetic Resource written by Paul Watson and published by CRC Press. This book was released on 2001-02-16 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing awareness of a worldwide reduction in biodiversity and the urgent need to develop ways to redress the problem. This is the first major book devoted to the subject of genetic resource banking (GRB) and its role in preserving global animal biodiversity. In Cryobanking the Genetic Resource, expert contributors provide the non-specialist with an overview of the subject and the practical techniques associated with GRB. The book presents a basic introduction to the concepts, and then points the way to relevant literature for those who wish to develop practical applications. The first section deals with the potential contribution of GRB to biodiversity protection, while the second section offers an introduction to the basic cryobiology of gametes and embryos. In the first section, genetic considerations for planning interventions are discussed, together with disease control measures. This section explores related reproductive technologies necessary for the use of cryopreserved gametes and embryos, as well as a range of other issues such as ownership and security of stored material, and the size and location of cryopreserved material. The second section offers a thorough review of the literature on cryopreservation of spermatozoa, oocytes, and embryos. It gathers species into related groups for ease of reference, and does not assume extensive specialist knowledge so that newcomers to the field can make the best use of the available research. This book is an essential resource for zoologists and conservationists with an interest in genetic management and captive breeding, and also for students involved in biodiversity issues, conservation, and assisted reproduction.
Download or read book Biology and Control of Aquatic Plants written by Lyn A. Gettys and published by . This book was released on 2009 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology and Control of Aquatic Plants: A Best Management Practices Handbook is the fourth edition of a handbook produced by the not for profit Aquatic Ecosystem Restoration Foundation (AERF). The mission of the AERF is to support research and development which provides strategies and techniques for the environmentally and scientifically sound management, conservation and restoration of aquatic ecosystems. One way the Foundation accomplishes this mission is by producing this handbook to provide information to the public regarding the benefits of aquatic ecosystem conservation and aquatic plant management. The first, second and third editions of this handbook became some of the most widely consulted references in the aquatic plant management community. This fourth edition has been specifically designed with water resource managers, water management associations, homeowners and customers and operators of aquatic plant management companies and districts in mind. Our goal in preparing this handbook is to provide basic, scientifically sound information to assist decision-makers with their water management questions.
Download or read book Stream Corridor Restoration written by and published by National Technical Info Svc. This book was released on 1998 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.
Download or read book Ecosystems Evolution and Ultraviolet Radiation written by Charles Cockell and published by Springer Science & Business Media. This book was released on 2001-05-25 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: From microbial to plant ecosystems, this book examines how changes in UV radiation, caused by anthropogenic ozone depletion, as well as changes in radiation levels throughout the evolution of life on Earth, can alter species composition and interspecies competitiveness. It focuses on the evolutionary aspects of the effects of UV as well as the various synergistic interactions of UV radiation with other environmental factors. Because our knowledge of UV effects on whole ecosystems is still at a relatively early stage, an important part of each chapter is an overview of future research directions and indications of where new date and knowledge is needed.
Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 231 Amphibian Metamorphosis Assay written by OECD and published by OECD Publishing. This book was released on 2009-09-08 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes an amphibian metamorphosis assay intended to screen substances which may interfere with the normal functioning of the hypothalamo-pituitary-thyroid axis. The assay was validated with the species Xenopus laevis, which is ...
Download or read book Amphibian Declines written by Michael J. Lannoo and published by Univ of California Press. This book was released on 2005-06-15 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documents in comprehensive detail a major environmental crisis: rapidly declining amphibian populations and the disturbing developmental problems that are increasingly prevalent within many amphibian species.
Download or read book Vertebrate Endocrinology written by David O. Norris and published by Academic Press. This book was released on 2013-05-04 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertebrate Endocrinology represents more than just a treatment of the endocrine system-it integrates hormones with other chemical bioregulatory agents not classically included with the endocrine system. It provides a complete overview of the endocrine system of vertebrates by first emphasizing the mammalian system as the basis of most terminology and understanding of endocrine mechanisms and then applies that to non-mammals. The serious reader will gain both an understanding of the intricate relationships among all of the body systems and their regulation by hormones and other bioregulators, but also a sense of their development through evolutionary time as well as the roles of hormones at different stages of an animal's life cycle. - Includes new full color format includes over 450 full color, completely redrawn image - Features a companion web site hosting all images from the book as PPT slides and .jpeg files - Presents completedly updated and revitalized content with new chapters, such as Endocrine Disrupters and Behavioral Endocrinology - Offers new clinical correlation vignettes throughout
Download or read book An Ecological Characterization of Rocky Mountain Montane and Subalpine Wetlands written by and published by . This book was released on 1986 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioecological Techniques written by Vincent Schultz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the twenty years the authors have been associated with the field of radiation ecology, there has been a diversified and increasing use of radionuclides in applied and basic biological research. Prior to the advent of the atomic age in the 1940s the use of radionuclides as tracers was initiated, and following that period one observed a dramatically increased use in many disciplines. Concurrent with this increase there appeared many books and articles on radionuclide tech niques useful to biologists in general. Although only a few ecological applications were evident in these early years, ecologists were quick to see the opportunities available in their field. In the United States, major centers for such activities included Oak Ridge National Laboratory and the U. S. Atomic Energy Com mission's Savannah River Plant. At Oak Ridge National Laboratory Dr. Stanley I. Auerbach, director of ecological activities, encouraged with remarkable suc cess the use of tracers by his associates. Dr. Eugene P. Odum had the foresight to see that radionuclide tracers provided the means to solve many problems of interest to ecologists. Consequently, his research included some unique radio tracer applications at the Savannah River Plant. In addition he encouraged others involved in ecological activities at the Savannah River Plant to do likewise. Ecologists such as Dr. Robert C. Pendleton at the U. S. Atomic Energy Com mission's Hanford Works applied radionuclides in their research. To these early investigators and to those who followed we owe the oppportunity to write this book.
Download or read book Southwestern Desert Resources written by William L. Halvorson and published by University of Arizona Press. This book was released on 2023-01-17 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: The southwestern deserts stretch from southeastern California to west Texas and then south to central Mexico. The landscape of this region is known as basin and range topography featuring to “sky islands” of forest rising from the desert lowlands which creates a uniquely diverse ecology. The region is further complicated by an international border, where governments have caused difficulties for many animal populations. This book puts a spotlight on individual research projects which are specific examples of work being done in the area and when they are all brought together, to shed a general light of understanding the biological and cultural resources of this vast region so that those same resources can be managed as effectively and efficiently as possible. The intent is to show that collaborative efforts among federal, state agency, university, and private sector researchers working with land managers, provides better science and better management than when scientists and land managers work independently.
Download or read book Monteverde written by Nalini M. Nadkarni and published by Oxford University Press. This book was released on 2000-03-09 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Monteverde Cloud Forest Reserve has captured the worldwide attention of biologists, conservationists, and ecologists and has been the setting for extensive investigation over the past 30 years. Roughly 40,000 ecotourists visit the Cloud Forest each year, and it is often considered the archetypal high-altitude rain forest.This volume brings together some of the most prominent researchers of the region to provide a broad introduction to the biology of the Monteverde, and cloud forests in general. Collecting and synthesizing vital information about the ecosystem and its biota, the book also examines the positive and negative effects of human activity on both the forest and the surrounding communities. Ecologists, tropical biologists, and natural historians will find this volume an indispensable resource, as will all those who are fascinated by the magnificent wonders of the tropical forests.
Download or read book UV Effects in Aquatic Organisms and Ecosystems written by E Walter Helbling and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers extensive coverage of the most important aspects of UVR effects on all aquatic (not just freshwater and marine) ecosystems, encompassing UV physics, chemistry, biology and ecology. Comprehensive and up-to-date, UV Effects in Aquatic Organisms and Ecosystems aims to bridge the gap between environmental studies of UVR effects and the broader, traditional fields of ecology, oceanography and limnology. Adopting a synthetic approach, the different sections cover: the physical factors controlling UVR intensity in the atmosphere; the penetration and distribution of solar radiation in natural waters; the main photochemical process affecting natural and anthropogenic substances; and direct and indirect effects on organisms (from viruses, bacteria and algae to invertebrate and vertebrate consumers). Researchers and professionals in environmental chemistry, photochemistry, photobiology and cell and molecular biology will value this book, as will those looking at ozone depletion and global change.
Download or read book Comparative Physiology of Fasting Starvation and Food Limitation written by Marshall D. McCue and published by Springer Science & Business Media. This book was released on 2012-05-17 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: All animals face the possibility of food limitation and ultimately starvation-induced mortality. This book summarizes state of the art of starvation biology from the ecological causes of food limitation to the physiological and evolutionary consequences of prolonged fasting. It is written for an audience with an understanding of general principles in animal physiology, yet offers a level of analysis and interpretation that will engage seasoned scientists. Each chapter is written by active researchers in the field of comparative physiology and draws on the primary literature of starvation both in nature and the laboratory. The chapters are organized among broad taxonomic categories, such as protists, arthropods, fishes, reptiles, birds, and flying, aquatic, and terrestrial mammals including humans; particularly well-studied animal models, e.g. endotherms are further organized by experimental approaches, such as analyses of blood metabolites, stable isotopes, thermobiology, and modeling of body composition.
Download or read book Malformed Frogs written by Michael Lannoo and published by Univ of California Press. This book was released on 2008-08-04 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: The widespread appearance of frogs with deformed bodies has generated much press coverage over the past decade. Frogs with extra limbs or digits, missing limbs or digits, or misaligned appendages raise an alarming question: "Are deformed humans next?" Taking a fresh look at this disturbing environmental problem, this reference provides a balanced overview of the science behind the malformed frog phenomenon. Bringing together data from ecology, parasitology, and other disciplines, Michael Lannoo considers the possible causes of these deformities, tells which frogs have been affected, and addresses questions about what these malformations might mean to human populations. Featuring high-quality radiographic images, Malformed Frogs suggests that our focus should be on finding practical solutions, a key component of which will be controlling chemical, nutrient, and pesticide runoff into wetlands.
Download or read book Copper Hazards to Fish Wildlife and Invertebrates written by Ronald Eisler and published by . This book was released on 1998 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical, concentrations, lethal, carcinogenicity, muagenicity.
Download or read book Animals in Traditional Folk Medicine written by Rômulo Alves and published by Springer Science & Business Media. This book was released on 2012-09-19 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: People have relied on medicinal products derived from natural sources for millennia, and animals have long been an important part of that repertoire; nearly all cultures, from ancient times to the present, have used animals as a source of medicine. Ingredients derived from wild animals are not only widely used in traditional remedies, but are also increasingly valued as raw materials in the preparation of modern medicines. Regrettably, the unsustainable use of plants and animals in traditional medicine is recognized as a threat to wildlife conservation, as a result of which discussions concerning the links between traditional medicine and biodiversity are becoming increasingly imperative, particularly in view of the fact that folk medicine is the primary source of health care for 80% of the world’s population. This book discusses the role of animals in traditional folk medicine and its meaning for wildlife conservation. We hope to further stimulate further discussions about the use of biodiversity and its implications for wildlife conservation strategies.
