An Introduction To The Catalog Of Waters Important For Spawning Rearing And I E Or Migration Of Anadromous Fishes Revised April 1982
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An Introduction To The Catalog Of Waters Important For Spawning Rearing And I E Or Migration Of Anadromous Fishes Revised April 1982
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Author : Alaska. Department of Fish and Game. Habitat Division
language : en
Publisher:
Release Date : 1982*
An Introduction To The Catalog Of Waters Important For Spawning Rearing And I E Or Migration Of Anadromous Fishes Revised April 1982 written by Alaska. Department of Fish and Game. Habitat Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982* with Anadromous fishes categories.
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.
Biology And Culture Of Siganids
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Author : M. N.. Duray
language : en
Publisher:
Release Date : 1990
Biology And Culture Of Siganids written by M. N.. Duray and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Fish culture categories.
Charrs
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Author : E.K. Balon
language : en
Publisher: Springer
Release Date : 1980-04-30
Charrs written by E.K. Balon and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980-04-30 with Nature 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.
Migratory Fishes Of South America
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Author : Joachim Carolsfeld
language : en
Publisher: IDRC
Release Date : 2003
Migratory Fishes Of South America written by Joachim Carolsfeld and has been published by IDRC this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Nature categories.
Atlantic Salmon In Maine
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2004-09-07
Atlantic Salmon In Maine 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 2004-09-07 with Technology & Engineering categories.
Because of the pervasive and substantial decline of Atlantic salmon populations in Maine over the past 150 years, and because they are close to extinction, a comprehensive statewide action should be taken now to ensure their survival. The populations of Atlantic salmon have declined drastically, from an estimated half million adult salmon returning to U.S. rivers each year in the early 1800s to perhaps as few as 1,000 in 2001. The report recommends implementing a formalized decision-making approach to establish priorities, evaluate options and coordinate plans for conserving and restoring the salmon.
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.
Field Identification Of Coastal Juvenile Salmonids
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Author : W. R. Pollard
language : en
Publisher: Madeira Park, B.C. : Harbour Pub.
Release Date : 1997
Field Identification Of Coastal Juvenile Salmonids written by W. R. Pollard and has been published by Madeira Park, B.C. : Harbour Pub. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Nature categories.
A must for biologists, resource assessment workers, forestry workers, salmon enhancement groups, naturalists, fisheries students and members of the public interested in fisheries projects.