Catalog Of Waters Important For Spawning Rearing Or Migration Of Anadromous Fishes Effective June 15 2022
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Catalog Of Waters Important For Spawning Rearing Or Migration Of Anadromous Fishes Effective June 15 2022
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Author : Joe Giefer
language : en
Publisher:
Release Date : 2022
Catalog Of Waters Important For Spawning Rearing Or Migration Of Anadromous Fishes Effective June 15 2022 written by Joe Giefer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Anadromous fishes categories.
This catalog contains a numerically ordered listing of all of the identified anadromous streams in Alaska by stream number and a listing of those named streams in alphabetical order.
Catalog Of Waters Important For Spawning Rearing Or Migration Of Anadromous Fishes
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Author :
language : en
Publisher:
Release Date : 1986
Catalog Of Waters Important For Spawning Rearing Or Migration Of Anadromous Fishes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Anadromous fishes categories.
Catalog Of Rivers Lakes And Streams That Are Important For The Spawning Or Migration Of Anadromous Fish
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Author :
language : en
Publisher:
Release Date : 1968
Catalog Of Rivers Lakes And Streams That Are Important For The Spawning Or Migration Of Anadromous Fish written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Fisheries categories.
Impacts Of Climate Change On Fisheries And Aquaculture
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2019-01-06
Impacts Of Climate Change On Fisheries And Aquaculture written by Food and Agriculture Organization of the United Nations and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-06 with Technology & Engineering categories.
This report indicates that climate change will significantly affect the availability and trade of fish products, especially for those countries most dependent on the sector, and calls for effective adaptation and mitigation actions encompassing food production.
Ecology Of Atlantic Salmon And Brown Trout
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Author : Bror Jonsson
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-05-03
Ecology Of Atlantic Salmon And Brown Trout written by Bror Jonsson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-03 with Science categories.
Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Ecology Behaviour And Conservation Of The Charrs Genus Salvelinus
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Author : Pierre Magnan
language : en
Publisher: Springer Science & Business Media
Release Date : 2002-07-31
Ecology Behaviour And Conservation Of The Charrs Genus Salvelinus written by Pierre Magnan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-07-31 with Medical categories.
Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic distribution encompassing many Asian, North American, and European countries and occupy diverse marine and freshwater environments. Furthermore, the current distribution of charr includes areas that were directly influenced by climate and topographic change associated with the many Pleistocene glaciations. Undoubtedly, these conditions have promoted much of the tremendous morphological, ecological, and genetic variability and plasticity within Salvelinus species and they make charr very good models to study evolutionary processes 'in action'. Many charr species also exhibit demographic characteristics such as slow growth, late maturity, and life in extreme environments, that may increase their susceptibility to extinction from habitat changes and overexploitation, especially in depauperate aquatic habitats. This vulnerability makes understanding their biology of great relevance to biodiversity and conservation. Finally, charr are of great cultural, commercial, and recreational significance to many communities, and their intimate linkage with human societies has stimulated much interest in this enigmatic genus. This volume comprises a selection of papers presented at the fourth International Charr Symposium held in Trois-Rivières (Québec, Canada), from 26 June to 1 July 2000. It includes 31 papers on ecological interactions and behaviour, trophic polymorphism, movement and migration, ecophysiology and evolutionary genetics, ecological parasitology, environmental stress and conservation. These studies cannot cover all recent developments in the ecology, behaviour and conservation of Salvelinus species, but collecting them into a special volume should bring attention to current research on this important genus and stimulate further work on Salvelinus species.
Freshwater Biodiversity
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Author : David Dudgeon
language : en
Publisher: Cambridge University Press
Release Date : 2020-05-21
Freshwater Biodiversity written by David Dudgeon and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-21 with Nature categories.
Fresh waters are disproportionately rich in species, and represent global hotspots of biodiversity. However, they are also hotspots of endangerment.
Restoration Of Aquatic Ecosystems
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1992-01-01
Restoration Of Aquatic Ecosystems written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-01-01 with Technology & Engineering categories.
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Migration Of Freshwater Fishes
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Author : Martyn Lucas
language : en
Publisher: John Wiley & Sons
Release Date : 2008-04-15
Migration Of Freshwater Fishes written by Martyn Lucas and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-15 with Technology & Engineering categories.
Recent studies have increasingly demonstrated the widespread existence of spatio-temporal variations in the abundance and distribution of species of freshwater fishes, previously assumed not to move between habitats. These movements are often on a seasonal or ontogenetic basis, for spawning, feeding and refuge, and in many cases are fundamental for the successful completion of lifecycles. This important book provides a single source for a range of previously widely dispersed information on these movements of fish in fresh waters, covering potamodromous fishes as well as the more familiar diadromous species, worldwide. Contents include full descriptions of types of migration and spatial behaviour, the stimulus and capacity for fish to migrate, the effects of climate on patterns of migratory behaviour, a taxonomic analysis (mostly by family) of freshwater fish migration, methods for studying migration, and details of the impacts of man's activities on freshwater fish migration. Migration of Freshwater Fishes provides an excellent and comprehensive reference to which the river manager, biologist or student can now refer to obtain information, advice and current opinion on the migratory behaviour of most taxonomic groups of fishes occurring in fresh water. University libraries and aquatic research stations should also have copies of this essential reference book on their shelves. Well-known international authors. Of great commercial importance to fisheries and professional angling bodies. Draws together much new information in one place. Detailed review of world wide migratory behaviour for most groups of freshwater fishes. Pure and applied relevance, for academics, fisheries scientists, river managers and conservationists. This comprehensive book includes 67 tables and figures and over 1,400 references.
The Bears Of Brooks Falls Wildlife And Survival On Alaska S Brooks River
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Author : Michael Fitz
language : en
Publisher: The Countryman Press
Release Date : 2021-03-09
The Bears Of Brooks Falls Wildlife And Survival On Alaska S Brooks River written by Michael Fitz and has been published by The Countryman Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-09 with Nature categories.
A natural history and celebration of the famous bears and salmon of Brooks River. On the Alaska Peninsula, where exceptional landscapes are commonplace, a small river attracts attention far beyond its scale. Each year, from summer to early fall, brown bears and salmon gather at Brooks River to create one of North America’s greatest wildlife spectacles. As the salmon leap from the cascade, dozens of bears are there to catch them (with as many as forty-three bears sighted in a single day), and thousands of people come to watch in person or on the National Park Service’s popular Brooks Falls Bearcam. The Bears of Brooks Falls tells the story of this region and the bears that made it famous in three parts. The first forms an ecological history of the region, from its dormancy 30,000 years ago to the volcanic events that transformed it into the Valley of Ten Thousand Smokes. The central and longest section is a deep dive into the lives of the wildlife along the Brooks River, especially the bears and salmon. Readers will learn about the bears’ winter hibernation, mating season, hunting rituals, migration patterns, and their relationship with Alaska’s changing environment. Finally, the book explores the human impact, both positive and negative, on this special region and its wild population.