Download or read book Habitat Requirements of the Golden Orb Quadrula Aurea written by Texas Water Development Board and published by . This book was released on 2012 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating the Habitat Requirements of the Golden Orb Mussel Quadrula Aurea for Conservation Purposes written by Sarah Hammontree and published by . This book was released on 2013 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hays County Regional Habitat Conservation Plan written by and published by . This book was released on 2010 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Edwards Aquifer Recovery Implementation Program Habitat Conservation Plan written by and published by . This book was released on 2012 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 2013-11 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the Edwards Aquifer Habitat Conservation Plan written by National Research Council and published by National Academies Press. This book was released on 2015-06-10 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Edwards Aquifer in south-central Texas is the primary source of water for one of the fastest growing cities in the United States, San Antonio, and it also supplies irrigation water to thousands of farmers and livestock operators. It is also is the source water for several springs and rivers, including the two largest freshwater springs in Texas that form the San Marcos and Comal Rivers. The unique habitat afforded by these spring-fed rivers has led to the development of species that are found in no other locations on Earth. Due to the potential for variations in spring flow caused by both human and natural causes, these species are continuously at risk and have been recognized as endangered under the federal Endangered Species Act (ESA). In an effort to manage the river systems and the aquifer that controls them, the Edwards Aquifer Authority and stakeholders have developed a Habitat Conservation Plan (HCP). The HCP seeks to effectively manage the river-aquifer system to ensure the viability of the ESA-listed species in the face of drought, population growth, and other threats to the aquifer. The National Research Council was asked to assist in this process by reviewing the activities around implementing the HCP. Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 is the first stage of a three-stage study. This report reviews the scientific efforts that are being conducted to help build a better understanding of the river-aquifer system and its relationship to the ESA-listed species. These efforts, which include monitoring and modeling as well as research on key uncertainties in the system, are designed to build a better understanding of how best to manage and protect the system and the endangered species. Thus, the current report is focused specifically on a review of the hydrologic modeling, the ecological modeling, the water quality and biological monitoring, and the Applied Research Program. The fundamental question that Review of the Edwards Aquifer Habitat Conservation Plan: Report 1 addresses is whether the scientific initiatives appropriately address uncertainties and fill knowledge gaps in the river-aquifer system and the species of concern. It is hoped that the successful completion of these scientific initiatives will ultimately lead the Edwards Aquifer Authority to an improved understanding of how to manage the system and protect these species.
Download or read book Texans on the Brink written by Brian R. Chapman and published by Texas A&M University Press. This book was released on 2019-03-26 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: What good is a rattlesnake? What purpose do animals serve? All species play a vital role in their biological communities, and the removal of just one can have a noticeable and catastrophic ripple effect. Yet social and political pressures frequently pit species conservation against economic progress and prosperity, and scientists fear that we may be in the midst of a mass extinction event. Brian R. Chapman and William I. Lutterschmidt make the case that the effort to preserve animals is the responsibility of every Texan and that biodiversity contributes enormous economic value to the citizens of Texas. Texans on the Brink brings together experts on eighty-eight endangered and threatened animal species of Texas and includes brief descriptions of the processes that state and federal agencies employ to list and protect designated species. Species accounts include a description of the species accompanied by a photograph, an easy-to-read account of the biology and ecology of the species, and a description of efforts underway to preserve the species and its required habitat. Sobering examples of species that were once part of the Texas fauna but are now extinct or extirpated are also given to further demonstrate just how vulnerable biodiversity can be. All species require healthy habitats, and every species—even a rattlesnake—provides important services for the biotic communities in which they live. It is imperative to learn as much as we can about these animals if we are to preserve biodiversity successfully in Texas.
Download or read book The Population Genetic Structure of Quadrula Aurea Bivalvia Unionidae A Threatened Freshwater Mussel in Central Texas written by Jeffrey A. Mabe and published by . This book was released on 2018 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthropogenic alteration of riverine ecosystems has led to declines in the abundance and diversity of freshwater mussels (Bivalvia: Unionoida) worldwide. Central Texas is home to a diverse freshwater mussel fauna including three candidates for federal listing under the Endangered Species Act. Surveys conducted over the last few decades suggest many of the endemic freshwater mussel species in Texas exist in small isolated populations that may be vulnerable to the deleterious effects of genetic diversity loss. Microsatellite primers from two closely related species were used to identify a set of genetic markers that functioned in the Golden Orb (Quadrula aurea). Microsatellite markers were then applied to document the population genetic structure of Q. aurea within and among three connected river drainages in southeastern Texas. Gene flow within existing Q. aurea populations appears high indicating little potential for genetic issues stemming from isolation and inbreeding. Two weakly divergent admixed populations were identified occupying the San Antonio and Guadalupe/San Marcos rivers. Population genetic structure was related to river basin affiliation, but results for environmental factors were unresolved. Current effective population size estimates are large for the Guadalupe/San Marcos drainage and moderately large for the San Antonio drainage and there is no clear genetic evidence of contemporary population declines. Transport in the glochidial phase by a highly mobile host fish, the channel catfish (Ictalurus punctatus), may provide a mechanism for maintaining connectivity among spatially discrete mussel beds and deserves further study. Information on the occurrence and habitat associations of Q. aurea and two other threatened freshwater mussel species was documented. Quantification of the population genetic structure for Q. aurea provides important information needed for the management of this species, a baseline for understanding future changes, and insight into the factors that shape the population genetic structure of other threatened unionids in Texas.
Download or read book Comal County Regional Habitat Conservation Plan written by and published by . This book was released on 2010 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Mussels of Texas written by Robert G. Howells and published by University of Texas Press. This book was released on 1996-09 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Species. Freshwater mussels are the most rapidly declining group of animals in North America. This guide represents a first-ofits-kind reference to assist both biologists and naturalists in the identification and study of freshwater mussels. Freshwater Mussels of Texas contains 224 pages with 226 black and white photographs, 144 color photographs and 79 line drawings covering all 52 species found in Texas waters. Introductory sections cover basic anatomy, reproduction.
Download or read book North American Freshwater Mussels written by Wendell R. Haag and published by Cambridge University Press. This book was released on 2012-08-27 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-illustrated book highlights freshwater mussels' fabulous diversity, amazing array of often bizarre ecological adaptations and their dire conservation plight. Summarizing and synthesizing historical and contemporary information as well as original research and analysis, the book describes the diverse array of mussel life history strategies and builds a cohesive narrative culminating in the development of explicit frameworks to explain pervasive patterns in mussel ecology. The fascinating and colorful role of mussels in human society is also described in detail, including the little-known pearl button industry of the early 1900s and the wild and often violent shell harvest of the 1990s. The final chapter details humans' efforts to save these fascinating animals and gives a prognosis for the future of the North American fauna. The book provides the first comprehensive review of mussel ecology and conservation for scientists, natural resource professionals, students and natural history enthusiasts.
Download or read book Southern Forest Resource Assessment written by David N. Wear and published by . This book was released on 2002 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: The southern forest resource assessment provides a comprehensive analysis of the history, status, and likely future of forests in the Southern United States. Twenty-three chapters address questions regarding social/economic systems, terrestrial ecosystems, water and aquatic ecosystems, forest health, and timber management; 2 additional chapters provide a background on history and fire. Each chapter surveys pertinent literature and data, accesses conditions, identifies research needs, and examines the implications for southern forests and the benefits they provide.
Download or read book The Smith Creek Bridge Site 41DW270 written by Dale Hudler and published by Texas Department of Transportation. This book was released on 2002 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Freshwater Mussels of Tennessee written by Paul Woodburn Parmalee and published by . This book was released on 1998 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Freshwater Mussels of Tennessee . . . is indispensable to anyone, anywhere, working on this group. Parmalee and Bogan have written a work that sets the standard for future regional guides."--G. Thomas Watters, Ohio Biological Survey "The Freshwater Mussels of Tennessee documents a tremendously diverse and unique mussel fauna that is rapidly being destroyed by modern development. Parmalee and Bogan set a new standard for state mussel surveys in their authoritative, thorough, and and highly readable account. The book will be of interest to biologists and conservationists worldwide and will appeal to anyone who cares about the preservation of natural resources in the southeastern United States."--Robert E. Warren, Illinois State Museum With more than 150 species and subspecies recorded in the state, Tennessee has one of the most diverse freshwater mussel faunas in North America. Valuable as indicators of water quality, these mollusks have themselves become threatened as development encroaches on habitat--twenty-three are currently listed as endangered species and at least twelve have become extinct. This is the first book for Tennessee to deal with this biologically and commercially significant group of mollusks. Its authors have been studying and writing about the mussels of Tennessee for more than twenty years and have undertaken a systematic organization of a large and complex body of information to bring order to a difficult field. The book traces the long history of human exploitation of mussels, from aboriginal food gathering to the growth of the cultured pearl industry. It provides an interpretive context for its exhaustive species accounts with background material on biology, distribution, economic utilization, taxonomy, and conservation issues. The authors also review the life cycle of the mussel and describe its many remarkable traits, such as its shell formation and the strategies it employs during the larval stage in parasitizing fish. The species accounts comprise 128 members of Family Unionidae--from pigtoes and pocketbooks to lilliputs and spikes--plus four additional species. The authors cover classification and synonymy, range and distribution, life history and ecology, and survival status. Particular attention is paid to shell description and structure to assist the reader in identification. Each species account includes a distribution map and color photos of two specimens. The Freshwater Mussels of Tennessee is a major reference that encompasses historical and modern mussel collections and draws on conservation studies that span two centuries. It will stand as an authoritative guide to understanding Tennessee mollusks and as a benchmark in the study of these species worldwide. The Authors: Paul W. Parmalee is professor emeritus of zooarchaeology and director emeritus of the McClung Museum at the University of Tennessee, Knoxville. Arthur E. Bogan is curator of aquatic invertebrates at the North Carolina State Museum of Natural Sciences, Raleigh.
Download or read book Conservation Biology and Applied Zooarchaeology written by Steve Wolverton and published by University of Arizona Press. This book was released on 2012-12-06 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now, the research of applied zooarchaeologists has not had a significant impact on the work of conservation scientists. This book is designed to show how zooarchaeology can productively inform conservation science. Conservation Biology and Applied Zooarchaeology offers a set of case studies that use animal remains from archaeological and paleontological sites to provide information that has direct implications for wildlife management and conservation biology. It introduces conservation biologists to zooarchaeology, a sub-field of archaeology and ethnobiology, and provides a brief historical account of the development of applied zooarchaeology. The case studies, which utilize palaeozoological data, cover a variety of animals and environments, including the marine ecology of shellfish and fish, potential restoration sites for Sandhill Cranes, freshwater mussel biogeography and stream ecology, conservation of terrestrial mammals such as American black bears, and even a consideration of the validity of the Pleistocene “rewilding” movement. The volume closes with an important new essay on the history, value, and application of applied zooarchaeology by R. Lee Lyman, which updates his classic 1996 paper that encouraged zooarchaeologists to apply their findings to present-day environmental challenges. Each case study provides detailed analysis using the approaches of zooarchaeology and concludes with precise implications for conservation biology. Essays also address issues of political and social ecology, which have frequently been missing from the discussions of conservation scientists. As the editors note, all conservation actions occur in economic, social, and political contexts. Until now, however, the management implications of zooarchaeological research have rarely been spelled out so clearly.
Download or read book Freshwater Mussel Propagation for Restoration written by Matthew A. Patterson and published by Cambridge University Press. This book was released on 2018-02-22 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical, step-by-step guide to rearing freshwater mussels, one of the most imperiled groups of animals in the world.
Download or read book Texas Natural History written by David J. Schmidly and published by Texas Tech University Press. This book was released on 2002 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural history - Texas, table of contents, index.
