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Fish Community And Habitat Assessments Within An Urbanized Spring Complex Of The Edwards Plateau
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Book Synopsis Fish Community and Habitat Assessments Within an Urbanized Spring Complex of the Edwards Plateau by : Cory Michael Scanes
Download or read book Fish Community and Habitat Assessments Within an Urbanized Spring Complex of the Edwards Plateau written by Cory Michael Scanes and published by . This book was released on 2016 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring complexes within the arid region of the Edwards Plateau are diversity hotspots and evolutionary refugia for numerous aquatic fauna. Within the last 100 years, anthropogenic modifications and uses of spring complexes are associated with imperilment of aquatic fauna. Purposes of this study were to assess biotic integrity (i.e. regional and natural species composition and diversity; Karr and Dudley 1981) of the fish community and to quantify current community structure and habitat associations within the Comal springs complex, the greatest discharge spring within the Edwards Plateau region of central Texas and located within the urban landscape. Fishes and habitats were quantified among wadeable and non-wadeable areas and among six reaches of the Comal springs complex seasonally for one year. Twenty-five species and 23,318 fishes were observed. Spring-associated fish richness (S) was six, comprising 77% of the total catch per unit effort. Compared to reference conditions and to historical records, species richness and relative abundances suggest that the Comal spring complex has high biotic integrity despite extremely low flow conditions and rotenone treatment in the 1950s and habitat modifications ( e.g. low head dams, land use conversion, bank stabilization) and high recreation use since the 1950s. However, the fish community was not homogenous among all reaches. Within two reaches of high recreational use, spring-associated fish richness and relative abundances were lower than other four reaches but still maintained high relative abundances of the federally-listed Fountain Darter. Fish-habitat associations were similar to reported habitat associations for most fishes. A notable exception was observed for the Fountain Darter, which had a more ubiquitous distribution and was not strongly associated with vegetation as previously found. Into the future, this study can be used as a baseline to monitor and assess threats to the Comal spring complex.
Book Synopsis Texans on the Brink by : Brian R. Chapman
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.
Book Synopsis Relationship Between Base Flow Magnitude and Spring Fish Communities by : Cody A. Craig
Download or read book Relationship Between Base Flow Magnitude and Spring Fish Communities written by Cody A. Craig and published by . This book was released on 2014 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Base flow is the portion of stream flow attributed to groundwater, and few studies quantify the pure effects of base flow reductions on stream fish communities. Spring complexes within the karst terrains of the Edwards Plateau Region of central Texas offer a unique opportunity to test hypothesized relationships between base flow and stream fish communities. Spring complexes are numerous within the Edwards Plateau, providing multiple independent observations, stable hydrographs dominated by base flow conditions, similar groundwater sources, and support endemic fishes that are associated with the spring complexes (i.e., spring-associated fishes). Primary objectives of this study were to assess spring -associated fish richness, relative abundances, and densities across a gradient of base flow magnitudes with predictions that metrics of spring-associated fish communities would linearly decrease with reductions in base flow. To control potential confounding variables, additional objectives were to test for the presence and strength of parapatry that is hypothesized to exist between spring-associated fishes and riverine-associated fishes (i.e., fishes with distributions not typically associated with spring complexes). Patterns in richness, relative abundances, and densities indicated parapatric distribution between spring-associated and riverine-associated fishes. Strength of parapatry depended upon base flow magnitude. Correspondingly, differences in spring-associated fish richness, relative abundances, and densities along a base flow gradient were detected, but only densities were linearly related to base flow. Richness and relative abundances of spring-associated fishes were non-linearly related to base flow, suggesting that spring complexes have a level of buffering capacity against base flow reductions. The relationship between spring-associated fish communities and base flow gradient was used to support the reported parapatry between spring-associated fishes and riverine-associated fishes with in the area and to highlight the conservation value of spring complexes to regional fauna. Predictive models generated in this study can be used to evaluate spring-associated fish community integrity within the Edwards Plateau Region and to predict future changes in Edward Plateau spring complexes related to increases in groundwater extraction.
Book Synopsis Texas Natural History by : David J. Schmidly
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.
Book Synopsis Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States by : James F. Coles
Download or read book Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States written by James F. Coles and published by . This book was released on 2012 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecosystems of California by : Harold Mooney
Download or read book Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.
Download or read book Game Management written by Aldo Leopold and published by Univ of Wisconsin Press. This book was released on 1987-03-13 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: With this book, published more than a half-century ago, Aldo Leopold created the discipline of wildlife management. Although A Sand Country Almanac is doubtless Leopold’s most popular book, Game Management may well be his most important. In this book he revolutionized the field of conservation.
Author :Intergovernmental Panel on Climate Change (IPCC) Publisher :Cambridge University Press ISBN 13 :9781009157971 Total Pages :755 pages Book Rating :4.1/5 (579 download)
Book Synopsis The Ocean and Cryosphere in a Changing Climate by : Intergovernmental Panel on Climate Change (IPCC)
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Book Synopsis Aridland Springs in North America by : Lawrence E. Stevens
Download or read book Aridland Springs in North America written by Lawrence E. Stevens and published by University of Arizona Press. This book was released on 2008 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of articles on the ecology of North American desert springs, by authors from the fields of biology, botany, ichthyology, conservation, geology and law; and covering both the special traits of springs and the ways in which they might be managed in order to survive.
Book Synopsis Springs of Texas by : Gunnar M. Brune
Download or read book Springs of Texas written by Gunnar M. Brune and published by Texas A&M University Press. This book was released on 2002 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the natural history of Texas and more than 2900 springs in 183 Texas counties. It also includes an in-depth discussion of the general characteristics of springs - their physical and prehistoric settings, their historical significance, and their associated flora and fauna.
Book Synopsis Valuing Ecosystem Services by : National Research Council
Download or read book Valuing Ecosystem Services written by National Research Council and published by National Academies Press. This book was released on 2005-05-14 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient recycling, habitat for plants and animals, flood control, and water supply are among the many beneficial services provided by aquatic ecosystems. In making decisions about human activities, such as draining a wetland for a housing development, it is essential to consider both the value of the development and the value of the ecosystem services that could be lost. Despite a growing recognition of the importance of ecosystem services, their value is often overlooked in environmental decision-making. This report identifies methods for assigning economic value to ecosystem servicesâ€"even intangible onesâ€"and calls for greater collaboration between ecologists and economists in such efforts.
Book Synopsis Endangered and Threatened Animals of Texas by : Linda Campbell
Download or read book Endangered and Threatened Animals of Texas written by Linda Campbell and published by University of Texas Press. This book was released on 1995 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Called to the principal's office, Brad remembers all the tricks he has played on his classmates and wonders who has turned him in.
Book Synopsis FAO-ICLARM stock assessment tools by : F. C. Gayanilo
Download or read book FAO-ICLARM stock assessment tools written by F. C. Gayanilo and published by Food & Agriculture Org.. This book was released on 1997 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Freshwater Mussels of Tennessee by : Paul Woodburn Parmalee
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.
Book Synopsis The First Global Integrated Marine Assessment by : United Nations
Download or read book The First Global Integrated Marine Assessment written by United Nations and published by Cambridge University Press. This book was released on 2017-04-17 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: The World Ocean Assessment - or, to give its full title, The First Global Integrated Marine Assessment - is the outcome of the first cycle of the United Nations' Regular Process for Global Reporting and Assessment of the State of the Marine Environment, including Socioeconomic Aspects. The Assessment provides vital, scientifically-grounded bases for the consideration of ocean issues, including climate change, by governments, intergovernmental agencies, non-governmental agencies and all other stakeholders and policymakers involved in ocean affairs. Together with future assessments and related initiatives, it will support the implementation of the recently adopted 2030 Agenda for Sustainable Development, particularly its ocean-related goals. Moreover, it will also form an important reference text for marine science courses.
Book Synopsis The Wild Turkey by : James G. Dickson
Download or read book The Wild Turkey written by James G. Dickson and published by Stackpole Books. This book was released on 1992 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: A National Wild Turkey Federation and U.S. Forest Service book Standard reference for all subspecies Extensive, new information on all aspects of wild turkey ecology and management The standard reference for all subspecies--Eastern, Gould's, Merriam's, Florida and Rio Grande--The Wild Turkey summarizes the new technologies and studies leading to better understanding and management. Synthesizing the work of all current experts, The Wild Turkey presents extensive, new data on restoration techniques; population influences and management; physical characteristics and behavior; habitat use by season, sex, and age; historic and seasonal ranges and habitat types; and nesting ecology. The book is designed to further the already incredible comeback of America's wild turkey.
Book Synopsis Sourcebook on Remote Sensing and Biodiversity Indicators by : Holly Strand
Download or read book Sourcebook on Remote Sensing and Biodiversity Indicators written by Holly Strand and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This sourcebook is intended to assist environmental managers and others who work with indicators in pursuing appropriate methods for indicator testing and production, and to offer some guidance to those responsible for the interpretation of indicators and implementation of decisions based on them. Upon reading this document, technical advisers, environmental policy makers, and remote sensing lab directors and project managers should be able to identify specific, relevant uses of remote sensing data for biodiversity monitoring and indicator development related to the CBD." --p. 8.
