Ecology of Estuarine Fishes

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Author :
Publisher : Johns Hopkins University Press
ISBN 13 : 9780801894718
Total Pages : 0 pages
Book Rating : 4.8/5 (947 download)

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Book Synopsis Ecology of Estuarine Fishes by : Kenneth W. Able

Download or read book Ecology of Estuarine Fishes written by Kenneth W. Able and published by Johns Hopkins University Press. This book was released on 2010-12-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference book details the life history and ecology of the fish species that occupy the estuarine and coastal habitats along the eastern United States and Canada. Kenneth W. Able and Michael P. Fahay draw on their own studies and other research to summarize and synthesize all the known facts about the ecology of 93 important species of fish that inhabit the temperate waters of the Western Atlantic. Presented in individual chapters, the species accounts include complete information about each fish's distribution, habitat use, reproduction, development, migratory patterns, prey, and predators and other natural enemies. The species accounts are illustrated and include lifecycle calendars, tables, and charts highlighting key information. Introductory chapters provide the general characteristics of the temperate ichthyofauna and explain the authors' methodology. Featuring new information based on more than 76,000 samples, novel long-term data, and an exhaustive analysis of more than 1,800 references, this invaluable resource is a complete compendium on estuarine fishes of the Western North Atlantic.

Tropical Estuarine Fishes

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 0470694874
Total Pages : 387 pages
Book Rating : 4.4/5 (76 download)

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Book Synopsis Tropical Estuarine Fishes by : Stephen J. M. Blaber

Download or read book Tropical Estuarine Fishes written by Stephen J. M. Blaber and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on the large array of tropical estuarine fishes has increased markedly in recent years and hence scientific knowledge about most aspects of these important fishes' biology and ecology is now catching up with that of their temperate equivalents. This landmark book draws together a vast wealth of information on tropical estuarine fishes and provides a vital reference point for all aspects of their study. The book's comprehensive contents include thorough coverage of the types and distribution of these fishes, their diversity and the environmental conditions and communities in which they live. Full details of their biology and ecology are an integral part of this book, as are details of these fishes' dependence on estuaries, man's interaction with the estuarine fish community and the conservation of estuarine species and the often threatened habitats upon which they depend. The author, Stephen Blaber, has a vast wealth of experience in the subject areas covered by this book and has produced a stimulating and extremely valuable volume that will be of huge importance for all those concerned with these fishes. He is based at CSIRO Marine Research, Cleveland, Queensland, Australia. Readership should include: fish biologists; fisheries scientists; aquatic scientists including those concerned with brackish, marine and freshwater environments; ecologists; environmental scientists and population biologists. Students studying for qualifications in fish biology and fisheries, particularly where there is a tropical element to their course will find this book of great value as a reference. Copies of the book should be available on the shelves of all libraries in research establishments and universities where biological sciences, fish biology, fisheries science or aquatic sciences are studied and taught.

Estuarine Ecology

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 0471755672
Total Pages : 576 pages
Book Rating : 4.4/5 (717 download)

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Book Synopsis Estuarine Ecology by : John W. Day, Jr.

Download or read book Estuarine Ecology written by John W. Day, Jr. and published by John Wiley & Sons. This book was released on 2012-11-19 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuaries are among the most biologically productive ecosystems on the planet--critical to the life cycles of fish, other aquatic animals, and the creatures which feed on them. Estuarine Ecology, Second Edition, covers the physical and chemical aspects of estuaries, the biology and ecology of key organisms, the flow of organic matter through estuaries, and human interactions, such as the environmental impact of fisheries on estuaries and the effects of global climate change on these important ecosystems. Authored by a team of world experts from the estuarine science community, this long-awaited, full-color edition includes new chapters covering phytoplankton, seagrasses, coastal marshes, mangroves, benthic algae, Integrated Coastal Zone Management techniques, and the effects of global climate change. It also features an entriely new section on estuarine ecosystem processes, trophic webs, ecosystem metabolism, and the interactions between estuaries and other ecosystems such as wetlands and marshes

Estuarine Ecology

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 9780471062639
Total Pages : 578 pages
Book Rating : 4.0/5 (626 download)

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Book Synopsis Estuarine Ecology by : John W. Day, Jr.

Download or read book Estuarine Ecology written by John W. Day, Jr. and published by John Wiley & Sons. This book was released on 1989-05-09 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook covers the physical and chemical aspects of estuaries, the biology and ecology of key organisms, the flow of organic matter through estuaries, and human interactions, such as the environmental impact of fisheries on estuaries and the effects of global climate change on these important ecosystems. Each chapter will begin with basic concepts and then move on to describing applications and current practice. This new edition is being authored by a team of world experts from the estuarine science community.

Basics of Marine and Estuarine Ecology

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Author :
Publisher : Springer
ISBN 13 : 8132227077
Total Pages : 490 pages
Book Rating : 4.1/5 (322 download)

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Book Synopsis Basics of Marine and Estuarine Ecology by : Abhijit Mitra

Download or read book Basics of Marine and Estuarine Ecology written by Abhijit Mitra and published by Springer. This book was released on 2016-02-02 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents recent research on marine ecology in different parts of the world. It aims to shed light on relevant topics for budding marine ecologists. The “blue soup” of Planet Earth, which comprises both biotic and abiotic components, is essential to keeping the wheel of civilization running. Four major ecosystem service categories have been identified within this context, namely provisioning services such as water, food, mangrove timber, honey, fish, wax, fuel wood, fodder and bioactive compounds from marine and estuarine flora and fauna; regulating services such as the regulation of climate, coastal erosion, coral bleaching and pollution; cultural services encompassing recreational (tourism), spiritual and other non-material benefits; and supporting services such as nutrient cycling and photosynthesis. These valuable services are obtained from various resources that must be conserved for the sake of humanity. This book presents data for each resource type, not just in the form of a simple description, but also through case studies that resulted from several research projects and pilot programs carried out in different parts of the world. Statistical tools were also used to critically analyze the influence of relevant hydrological parameters on the biotic community. Advanced research in marine and estuarine ecology is based on the use of sophisticated instruments, sampling precision, statistical tools, etc., which have also been highlighted in the book.

The Ecology of Marine Fishes

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Author :
Publisher : Univ of California Press
ISBN 13 : 0520932471
Total Pages : 1353 pages
Book Rating : 4.5/5 (29 download)

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Book Synopsis The Ecology of Marine Fishes by : Dr. Larry G. Allen

Download or read book The Ecology of Marine Fishes written by Dr. Larry G. Allen and published by Univ of California Press. This book was released on 2006-02-15 with total page 1353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine fishes have been intensively studied, and some of the fundamental ideas in the science of marine ecology have emerged from the body of knowledge derived from this diverse group of organisms. This unique, authoritative, and accessible reference, compiled by 35 luminary ecologists, evolutionary biologists, and ichthyologists, provides a synthesis and interpretation of the large, often daunting, body of information on the ecology of marine fishes. The focus is on the fauna of the eastern Pacific, especially the fishes of the California coast, a group among the most diverse and best studied of all marine ecosystems. A generously illustrated and comprehensive source of information, this volume will also be an important launching pad for future research and will shed new light on the study of marine fish ecology worldwide. The contributors touch on many fields in biology, including physiology, development, genetics, behavior, ecology, and evolution. The book includes sections on the history of research, both published and unpublished data, sections on collecting techniques, and references to important earlier studies.

The First Year in the Life of Estuarine Fishes in the Middle Atlantic Bight

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Author :
Publisher :
ISBN 13 : 9780813525006
Total Pages : 342 pages
Book Rating : 4.5/5 (25 download)

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Book Synopsis The First Year in the Life of Estuarine Fishes in the Middle Atlantic Bight by : Kenneth W. Able

Download or read book The First Year in the Life of Estuarine Fishes in the Middle Atlantic Bight written by Kenneth W. Able and published by . This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the heart of the book, they describe the natural history of the eggs, larvae, and juveniles of seventy fish species, the most abundant and ecologically/economically important of 300+ species whose young are found in the Hudson and Delaware estuaries and smaller New Jersey rivers, estuaries, and bays. They stress the temporal and spatial distribution of eggs, larvae, and juveniles. They also analyze the patterns and subtle variations in the ecology and life history strategies of these species: their growth rates, where they find refuge from predators, how they survive their first winter, and how they share the estuarine habitat with so many other species.

Fish and Fisheries in Estuaries

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119705355
Total Pages : 1595 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Fish and Fisheries in Estuaries by : Alan K. Whitfield

Download or read book Fish and Fisheries in Estuaries written by Alan K. Whitfield and published by John Wiley & Sons. This book was released on 2022-02-18 with total page 1595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das zweibändige Werk Fish and Fisheries in Estuaries: A Global Perspective enthält eine Darstellung des aktuellen Wissensstandes über Fische in Ästuaren. In Beiträgen von mehr als fünfzig international anerkannten Forschern und Experten für Ichthyologie in Ästuaren präsentiert dieses wegweisende Übersichtswerk die Themen Fischbestände und funktionelle Gruppen, Rekrutierung und Produktion in Ästuaren, Ernährungsökologie und trophische Dynamik, Erhaltung von Fischen in Ästuaren und viele mehr. In dreizehn ausführlichen Kapiteln werden die wichtigsten Aspekte zu Fischen und Fischerei in Ästuaren rund um die Welt beschrieben. Es wird die Biologie der Fische in Ästuargewässern und ihre Verbindung zu den dortigen Ökosystemen betrachtet, und es wird analysiert, wie sich die menschengemachte Industrialisierung und globale Ereignisse wie der Klimawandel auf einheimische und andere Arten auswirken. Weitere Themen sind die Vielfalt der Lebensräume, das Verhalten von Fischen bei der Nahrungssuche, Instrumente und Modelle der Umwelttechnik, Gefahren und Risiken für Fische und Fischerei in Ästuaren sowie die Gesundheit der Umwelt in Ästuaren. Dieses maßgebliche Referenzwerk enthält detaillierte Informationen über die Biologie und Ökologie von Fischen und Fischerei in Ästuaren und bietet außerdem: * Eine Betrachtung aktueller Ansätze und künftiger Forschungsrichtungen, die darauf abzielen, ein Gleichgewicht zwischen der Nutzung und der Erhaltung von Fischen in Ästuaren zu erreichen * Eine Erörterung der Umweltqualitätsziele sowie der nachhaltigen Fischerei und Bewirtschaftung der Ästuare * Eine Untersuchung, wie sich die zunehmende Nutzung von Ressourcen wie Nahrung, Raum und Wasser durch den Menschen auf die Fischerei in den Ästuaren auswirkt * Zahlreiche internationale Fallstudien zum Fischereimanagement, zu bedrohten Arten, zur Sanierung von Ästuaren, zur Fortpflanzung und Ontogenese und weiteren Themen * Eine Darstellung der Studien- und Probenahmeverfahren, der Feldausrüstung sowie der Verarbeitung, Analyse und Interpretation der Daten Das Werk Fish and Fisheries in Estuaries: A Global Perspective ist ein unverzichtbares Hilfsmittel und eine Referenzquelle für Fischbiologen, Fischereiwissenschaftler, Ökologen und Umweltwissenschaftler, Gewässerökologen, Naturschutzbiologen sowie Studierende der höheren Semester und Dozenten im Bereich Fischbiologie und Fischerei.

Ecology and Conservation of Fishes

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Author :
Publisher : CRC Press
ISBN 13 : 1439858543
Total Pages : 576 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Ecology and Conservation of Fishes by : Harold M. Tyus

Download or read book Ecology and Conservation of Fishes written by Harold M. Tyus and published by CRC Press. This book was released on 2011-10-19 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written as a stand-alone textbook for students and a useful reference for professionals in government and private agencies, academic institutions, and consultants, Ecology and Conservation of Fishes provides broad, comprehensive, and systematic coverage of all aquatic systems from the mountains to the oceans. The book begins with overview discussions on the ecology, evolution, and diversity of fishes. It moves on to address freshwater, estuarine, and marine ecosystems and identifies factors that affect the distribution and abundance of fishes. It then examines the adaptations of fishes as a response to constraints posed in ecosystems. The book concludes with four chapters on applied ecology to discuss the critical issues of management, conservation, biodiversity crises, and climate change. Major marine fisheries have collapsed, and there are worldwide declines in freshwater fish populations. Fishery scientists and managers must become more effective at understanding and dealing with resource issues. If not, fish species, communities, and entire ecosystems will continue to decline as habitats change and species are lost. Ecology and Conservation of Fishes has taken a historical and functional approach to explain how we got where we are, providing old and new with a better foundation as ecologists and conservationists, and most importantly, it awakens senses of purpose and need. Past management practices are reviewed, present programs considered, and the need for incorporating principles of applied ecology in future practices is emphasized.

Fishes in Estuaries

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 0470995211
Total Pages : 658 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Fishes in Estuaries by : Michael Elliott

Download or read book Fishes in Estuaries written by Michael Elliott and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: This landmark publication collates information and studies on the use of estuaries, and specific habitats within them, as nursery, feeding and refuge areas, and migration routes of marine and other fish, many of which are of commercial and conservation importance. The editors and authors of the book have carefully compiled a huge wealth of information from the work of 18 organizations across 11 countries, providing a unique collection of data never before brought together within the covers of one book. Chapters within this exceptional publication cover habitat use by fishes, recruitment and production in estuaries, links between fish and other trophic levels, endangered and rare species, estuarine development and restoration, environmental quality of estuaries and the management of estuarine fishes. The book notably contains extensive chapters on field methods and data analysis. Fishes in Estuaries is an essential tool and reference source for fisheries and environmental managers, fish biologists, environmental scientists, aquatic ecologists and conservation biologists. Libraries in all universities and research establishments where biological sciences are studied and taught should have copies of this book on their shelves, as should personnel employed in regulatory and consultant capacities, such as within rivers authorities, environment agencies and fish and wildlife departments. Comprehensive coverage of commercially exploited species. Internationally known and respected contributors. Multi-contributor approach providing very detailed coverage. Estuaries are a vitally important ecosystem.

Migration Ecology of Marine Fishes

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Author :
Publisher : JHU Press
ISBN 13 : 1421416123
Total Pages : 305 pages
Book Rating : 4.4/5 (214 download)

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Book Synopsis Migration Ecology of Marine Fishes by : David H. Secor

Download or read book Migration Ecology of Marine Fishes written by David H. Secor and published by JHU Press. This book was released on 2015-06-15 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: A synthetic treatment of all marine fish taxa (teleosts and elasmobranchs), this book employs explanatory frameworks from avian and systems ecology while arguing that migrations are emergent phenomena, structured through schooling, phenotypic plasticity, and other collective agencies. The book provides overviews of the following concepts: The comparative movement ecology of fishes and birds; The alignment of mating systems with larval dispersal; Schooling and migration as adaptations to marine food webs; Natal homing; Connectivity in populations and metapopulations; The contribution of migration ecology to population resilience

The Estuarine Ecosystem

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Author :
Publisher : OUP Oxford
ISBN 13 : 0191546232
Total Pages : 222 pages
Book Rating : 4.1/5 (915 download)

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Book Synopsis The Estuarine Ecosystem by : Donald S. McLusky

Download or read book The Estuarine Ecosystem written by Donald S. McLusky and published by OUP Oxford. This book was released on 2004-04-29 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the inhabitants of many of the world's major towns and cities, estuaries provide their first and nearest glimpse of a natural habitat. Despite the attempts of man to pollute or reclaim it, the estuarine ecosystem continues to provide a fascinating insight into a natural world where energy is transformed from sunlight into plant material, and then through the steps of a food chain is converted into a rich food supply for birds and fish. The book provides a concise readable introduction to estuarine ecology. First published in 1981, it soon established itself as the principle textbook of choice in the UK & NW Europe. This new edition builds upon the strengths of the earlier editions but has been thoroughly revised throughout. The new co-author brings a human impact dimension to the revised book. It is written for advanced undergraduate and graduate students (particularly taught masters) who have had a general ecology course, but no further training in estuarine science. It will be useful to both professional researchers and practical managers in marine ecology and environmental science who seek a compact but comprehensive introduction to estuarine ecology.

Fishes in Lagoons and Estuaries in the Mediterranean 1

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1786302446
Total Pages : 288 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis Fishes in Lagoons and Estuaries in the Mediterranean 1 by : Mohamed Hichem Kara

Download or read book Fishes in Lagoons and Estuaries in the Mediterranean 1 written by Mohamed Hichem Kara and published by John Wiley & Sons. This book was released on 2019-02-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lagoons and estuaries are transition spaces between earth and sea. Beyond their expanse, geographic repartition, geomorphological, hydroclimatic and ecobiological diversity and biodiversity, they play an important role in regional economies and are some of the ecosystems most vulnerable to global change. Reinforced by numerous references, this book studies Mediterranean lagoonal and estuarine fishes whose diversity largely depends on the composition of neighboring marine and continental ichtyofauna. The authors describe their morphological, biological, ecological and behavioral characteristics by evoking their distinctive features and differences with their marine or freshwater homologues. Their adaptation strategies, elucidated thanks to recent advances in morphology, genetics and molecular biology, are recognized as a major advantage in the context of climate change. This book is for natural environment managers, engineers, teachers, students and researchers.

Patterns in Freshwater Fish Ecology

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Publisher : Springer Science & Business Media
ISBN 13 : 1461540666
Total Pages : 776 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Patterns in Freshwater Fish Ecology by : William J. Matthews

Download or read book Patterns in Freshwater Fish Ecology written by William J. Matthews and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly a decade ago I began planning this book with the goal of summarizing the existing body of knowledge on ecology of freshwater fishes in a way similar to that of H. B. N. Hynes' comprehensive treatise Ecology of Running Waters for streams. The time seemed appropriate, as there had been several recent volumes that synthesized much information on a range of topics important in fish ecology, from biogeographic to local scales. For example, the "Fish Atlas" (Lee et aI. , 1980) had provided range maps and basic entry to the original literature for all freshwater fishes in North America, and in 1986 Hocutt and Wiley's Zoogeography of North American Fishes provided a detailed synthesis of virtually everything known about distributional ecology of fishes on that continent. Tim Berra (1981) had summarized in convenient map form the worldwide distribution of all freshwater fish families, and Joe Nelson's 1976 and 1984 editions of Fishes of the World had appeared. To complement these "big picture" views of fish distributions, the volume on Community and Evolutionary Ecology of North American Freshwater Fishes, edited by David Heins and myself (Matthews and Heins, 1987), had provided an opportunity for more than 30 individuals or groups to summarize their work on stream fishes (albeit mostly for warmwater systems).

Fish and Fisheries in Estuaries, 2 Volume Set

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Author :
Publisher : Wiley-Blackwell
ISBN 13 : 9781444336672
Total Pages : 0 pages
Book Rating : 4.3/5 (366 download)

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Book Synopsis Fish and Fisheries in Estuaries, 2 Volume Set by : Alan K. Whitfield

Download or read book Fish and Fisheries in Estuaries, 2 Volume Set written by Alan K. Whitfield and published by Wiley-Blackwell. This book was released on 2022-02-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish and Fisheries in Estuaries: A Global Perspective brings together the current state of knowledge of estuarine fish in one inclusive work. Featuring contributions by more than fifty internationally-recognized researchers and estuarine ichthyological specialists, this landmark resource covers fish assemblages and functional groups, recruitment and production in estuaries, feeding ecology and trophic dynamics, fisheries and the conservation of estuarine fish, and much more. Thirteen in-depth chapters and two method appendices examine major aspects of fish and fisheries in estuaries throughout the world. The text describes the biology of estuarine fish and their connections with estuarine and adjacent marine and freshwater ecosystems, as well as examining the ways human industrialization and global events such as climate change are impacting both native and non-native species. Topics include habitat diversity, fish foraging behavior, ecological engineering tools and models, hazards and risks to estuarine fish and fisheries, and estuarine environmental health. Offering detailed information on the biology and ecology of estuarine fish and fisheries, this authoritative reference: Explores current approaches and future research directions aimed at achieving a balance between exploitation and conservation of estuarine fishes Discusses environmental quality objectives and sustainable management of estuary fisheries Addresses the impacts of increased human use of resources such as food, space, and water to estuarine fish and fisheries Features numerous international case studies of management of fisheries, threatened species, estuarine rehabilitation, reproduction and ontogeny, and others Covers study and sampling methods, field equipment, and data processing, analysis, and interpretation Fish and Fisheries in Estuaries: A Global Perspective is an indispensable tool and reference point for fish biologists, fisheries scientists, ecologists and environmental scientists, aquatic ecologists, conservation biologists, estuarine managers and advanced students and instructors in fish biology and fisheries programs.

Ecology and Conservation of Estuarine Ecosystems

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Author :
Publisher : Cambridge University Press
ISBN 13 : 1107354994
Total Pages : 515 pages
Book Rating : 4.1/5 (73 download)

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Book Synopsis Ecology and Conservation of Estuarine Ecosystems by : Renzo Perissinotto

Download or read book Ecology and Conservation of Estuarine Ecosystems written by Renzo Perissinotto and published by Cambridge University Press. This book was released on 2013-05-16 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: St Lucia is the world's oldest protected estuary and Africa's largest estuarine system. It is also the centerpiece of South Africa's first UNESCO World Heritage Site, the iSimangaliso Wetland Park, and has been a Ramsar Wetland of International Importance since 1986. Knowledge of its biodiversity, geological origins, hydrology, hydrodynamics and the long history of management is unique in the world. However, the impact of global change has culminated in unprecedented challenges for the conservation and management of the St Lucia system, leading to the recent initiation of a project in support of its rehabilitation and long-term sustainability. This timely volume provides a unique source of information on the functioning and management of the estuary for researchers, students and environmental managers. The insights and experiences described build on over 60 years of study and management at the site and will serve as a valuable model for similar estuaries around the world.

The Estuarine Ecosystem

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Author :
Publisher : Oxford University Press
ISBN 13 : 0198525087
Total Pages : 223 pages
Book Rating : 4.1/5 (985 download)

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Book Synopsis The Estuarine Ecosystem by : Donald S. McLusky

Download or read book The Estuarine Ecosystem written by Donald S. McLusky and published by Oxford University Press. This book was released on 2004-04-29 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the inhabitants of many of the world's major towns and cities, estuaries provide their first and nearest glimpse of a natural habitat. Despite the attempts of man to pollute or reclaim it, the estuarine ecosystem continues to provide a fascinating insight into a natural world where energy is transformed from sunlight into plant material, and then through the steps of a food chain is converted into a rich food supply for birds and fish. When the previous editions of this book appeared, biologists were beginning to realize that the estuarine ecosystem was an ideal habitat in which to observe the processes controlling biological productivity. In the intervening period, many more estuaries and their inhabitants have been studied intensively. It is now possible to answer many of the questions posed by the earlier editions, and to pursue further the explanation of high productivity in estuaries and of energy utilization at different trophic levels within estuarine food webs. A significant amount of new information has also been accumulated on the human use and abuse of these habitats, particularly the effects of pollution. Although the world's seas are vast and may appear capable of receiving unlimited quantities of human effluent, such waste is often first discharged into the confined waters of estuaries. In practice, marine pollution is often essentially estuarine pollution. To reflect the huge impact of humans on estuaries, and to consider how we may either modify, remove or enrich the estuarine ecosystem, three completely new chapters have been prepared in this edition. These consider anthropogenic change (including pollution) in estuaries, the diverse uses and abuses of the estuarine habitat by man, and the methods used to study human induced changes in estuaries. Finally, this text examines the ways in which estuarine management can monitor, control or prevent the pollution and destruction of this fragile ecosystem.