Download or read book Effects of Fish Predation on Macroinvertebrate Community Structure written by James Willis Wright and published by . This book was released on 1993 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Structuring Role of Submerged Macrophytes in Lakes written by Erik Jeppesen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth of the discipline of aquatic ecology has been driven both by scientific interest in the complexities of aquatic ecosystems and by their enormous environmental importance and sensitivity. This book focuses on the remarkably diverse roles played by underwater plants, and is divided into three parts: 10 thematic chapters, followed by 18 case studies, and rounded off by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusc and microbe habitat, making this of interest to aquatic ecologists as well as limnologists, ecosystem ecologists, microbial ecologists, fish biologists, and environmental managers.
Download or read book The Effect of Fish Predation on Benthic Community Structure in Streams written by Jordan Stuart Rosenfeld and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Differential Effects of Macroinvertebrates and Fish on Turf Communities written by David Ray Laur and published by . This book was released on 1990 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Microcosm Approach to the Effects of Fish Predation on Aquatic Community Structure and Function written by David Alan Crouthamel and published by . This book was released on 1977 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arctic Ecology written by David N. Thomas and published by John Wiley & Sons. This book was released on 2021-01-26 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic is often portrayed as being isolated, but the reality is that the connectivity with the rest of the planet is huge, be it through weather patterns, global ocean circulation, and large-scale migration patterns to name but a few. There is a huge amount of public interest in the ‘changing Arctic’, especially in terms of the rapid changes taking place in ecosystems and exploitation of resources. There can be no doubt that the Arctic is at the forefront of the international environmental science agenda, both from a scientific aspect, and also from a policy/environmental management perspective. This book aims to stimulate a wide audience to think about the Arctic by highlighting the remarkable breadth of what it means to study its ecology. Arctic Ecology seeks to systematically introduce the diverse array of ecologies within the Arctic region. As the Arctic rapidly changes, understanding the fundamental ecology underpinning the Arctic is paramount to understanding the consequences of what such change will inevitably bring about. Arctic Ecology is designed to provide graduate students of environmental science, ecology and climate change with a source where Arctic ecology is addressed specifically, with issues due to climate change clearly discussed. It will also be of use to policy-makers, researchers and international agencies who are focusing on ecological issues and effects of global climate change in the Arctic. About the Editor David N. Thomas is Professor of Arctic Ecosystem Research in the Faculty of Biological and Environmental Sciences, University of Helsinki. Previously he spent 24 years in the School of Ocean Sciences, Bangor University, Wales. He studies marine systems, with a particular emphasis on sea ice and land-coast interactions in the Arctic and Southern Oceans as well as the Baltic Sea. He also edited a related book: Sea Ice, 3rd Edition (2017), which is also published by Wiley-Blackwell.
Download or read book Treatise on Estuarine and Coastal Science written by and published by Academic Press. This book was released on 2012-03-06 with total page 4604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of estuaries and coasts has seen enormous growth in recent years, since changes in these areas have a large effect on the food chain, as well as on the physics and chemistry of the ocean. As the coasts and river banks around the world become more densely populated, the pressure on these ecosystems intensifies, putting a new focus on environmental, socio-economic and policy issues. Written by a team of international expert scientists, under the guidance of Chief Editors Eric Wolanski and Donald McClusky, the Treatise on Estuarine and Coastal Science, Ten Volume Set examines topics in depth, and aims to provide a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Most up-to-date reference for system-based coastal and estuarine science and management, from the inland watershed to the ocean shelf Chief editors have assembled a world-class team of volume editors and contributing authors Approach focuses on the physical, biological, chemistry, ecosystem, human, ecological and economics processes, to show how to best use multidisciplinary science to ensure earth's sustainability Provides a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Features up-to-date chapters covering a full range of topics
Download or read book North Cascades National Park N P Mountain Lakes Fishery Management Plan written by and published by . This book was released on 2008 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PULSED PREDATION DETERMINES FRESHWATER POND COMMUNITY ASSEMBLY written by Ellen Titus and published by . This book was released on 2020 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, community ecologists have assumed constant consumer pressure when modeling predator-prey interactions, however, we know that interactions in most natural systems are dynamic. Inconstant predation may account for some discrepancies between natural ecosystems and model predictions and recent theoretical work shows that episodic pulsed predation events can have strong, destabilizing effects on the persistence and equilibrium densities of prey populations. In this study we conducted an experiment modeled after natural systems (such as intermittent streams, temporary ponds, and periodically flooded riverine rock pools) that experience episodic introductions and removals of predators. Specifically we created 32 artificial freshwater ponds and applied one of four different bluegill sunfish predation treatments: no predation, constant predation, and two magnitudes of stochastically pulsed predation (one or five fish). Pulses consisted of 24-hour introductions of predators to pools, and by the end of the experiment constant predation and large pulses had experienced equivalent predator exposure. We compared both macroinvertebrate diversity and several metrics estimating microbial function to determine the effects of pulsed predation on assembly and structure of communities. We found that pulsed predation resulted in communities with different overall abundance and diversity when compared to constant predation. In addition, the magnitude of predation pulses in environments appears to be key in determining their effect on communities, as the small pulse of fish resulted in communities more similar to control treatments while large pulse treatments resulted in communities more similar to constant fish presence. Microbial community function was high in all tanks, resulting in low free nitrogen in this experiment and thus we cannot conclusively link microbial community function to pulsed fish predation. Understanding how predation pulses structure ecosystems and invertebrate communities improves our general understanding of processes regulating consumer-resource interactions and can improve our ability to predict community responses to increasingly unpredictable environmental change.
Download or read book Issues in Global Environment Freshwater and Marine Environments 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Continental Shelf Research. The editors have built Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Continental Shelf Research in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Global Environment—Freshwater and Marine Environments: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1996 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers written by U. S. Environmental Agency and published by CreateSpace. This book was released on 2015-06-12 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: In December 1986, U.S. EPA's Assistant Administrator for Water initiated a major study of the Agency's surface water monitoring activities. The resulting report, entitled "Surface Water Monitoring: A Framework for Change", emphasizes the restructuring of existing monitoring programs to better address the Agency's current priorities, e.g., toxics, nonpoint source impacts, and documentation of "environmental results." The study also provides specific recommendations on effecting the necessary changes. Principal among these are: 1. To issue guidance on cost-effective approaches to problem identification and trend assessment. 2. To accelerate the development and application of promising biological monitoring techniques. In response to these recommendations, the Assessment and Watershed Protection Division developed the rapid bioassessment protocols (RBPs) designed to provide basic aquatic life data for water quality management purposes such as problem screening, site ranking, and trend monitoring, and produced a document in 1989. Although none of the protocols were meant to provide the rigor of fully comprehensive studies, each was designed to supply pertinent, cost-effective information when applied in the appropriate context. As the technical guidance for biocriteria has been developed by EPA, states have found these protocols useful as a framework for their monitoring programs. This document was meant to have a selfcorrective process as the science advances; the implementation by state water resource agencies has contributed to refinement of the original RBPs for regional specificity. This revision reflects the advancement in bioassessment methods since 1989 and provides an updated compilation of the most cost-effective and scientifically valid approaches. The primary purpose of this document is to describe a practical technical reference for conducting cost-effective biological assessments of lotic systems. The protocols presented are not necessarily intended to replace those already in use for bioassessment nor is it intended to be used as a rigid protocol without regional modifications. Instead, they provide options for agencies or groups that wish to implement rapid biological assessment and monitoring techniques. This guidance, therefore, is intended to provide basic, cost-effective biological methods for states, tribes, and local agencies that (1) have no established bioassessment procedures, (2) are looking for alternative methodologies, or (3) may need to supplement their existing programs (not supersede other bioassessment approaches that have already been successfully implemented).
Download or read book Nordic Workshop on Predation Processes and Predation Models written by and published by Nordic Council of Ministers. This book was released on 1993 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Key to the Freshwater Triclads of Britain and Ireland written by Thomas Braban Reynoldson and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Classification of North American Freshwater Invertebrates written by James H. Thorp and published by Elsevier. This book was released on 2001-05-11 with total page 1073 pages. Available in PDF, EPUB and Kindle. Book excerpt: The First Edition of Ecology and Classification of North American Freshwater Invertebrates has been immensely popular with students and researchers interested in freshwater biology and ecology, limnology, environmental science, invertebrate zoology, and related fields. The First Edition has been widely used as a textbook and this Second Edition should continue to serve students in advanced classes. The Second Edition features expanded and updated chapters, especially with respect to the cited references and the classification of North American freshwater invertebrates. New chapters or substantially revised chapters include those on freshwater ecosystems, snails, aquatic spiders, aquatic insects, and crustaceans. - Most up-to-date and informative text of its kind - Written by experts in the ecology of various invertebrate groups, coverage emphasizes ecological information within a current taxonomic framework - Each chapter contains both morphological and taxonomic information, including keys to North American taxa (usually to the generic level) as well as bibliographic information and a list of further readings - The text is geared toward researchers and advanced undergraduate and graduate students
Download or read book Ecotoxicology written by Michael C. Newman and published by CRC Press. This book was released on 2007-12-13 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique presentation that unifies the field, this book brings together concepts and information about contaminant effects at all levels of the biological hierarchy. Beginning at the biomolecular level, this book builds progressively toward a discussion of effects to the global biosphere. Emphasizing ecological components and fundamental paradigms, the authors strike a balance between the presentation of details relevant at each level and the integration of phenomena and processes among levels. A milestone in the field, the book is suitable for graduate courses, as well as a reference for professionals in the field.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
