Author: Bror Jonsson
Publisher: Springer Science & Business Media
ISBN: 9400711891
Category : Science
Languages : en
Pages : 720
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Book Description
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.
Author: Thomas P. Quinn
Publisher: UBC Press
ISBN: 0774842431
Category : Nature
Languages : en
Pages : 392
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Book Description
The Behavior and Ecology of Pacific Salmon and Trout explains the patterns of mate choice, the competition for nest sites, and the fate of the salmon after their death. It describes the lives of offspring during the months they spend incubating in gravel, growing in fresh water, and migrating out to sea to mature. This thorough, up-to-date survey should be on the shelf of everyone with a professional or personal interest in Pacific salmon and trout. Written in a technically accurate but engaging style, it will appeal to a wide range of readers, including students, anglers, biologists, conservationists, legislators, and armchair naturalists.
Author: Hugh Falkus
Publisher:
ISBN: 9781900318044
Category : Salmon fishing
Languages : en
Pages : 240
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Book Description
Intended for beginners and experienced fishermen alike, this is a guide to the legal methods of fishing for salmon and sea trout. There are chapters on fly fishing, spinning, prawn fishing, worm fishing, lake fishing, salt-water fishing, equipment, and safety.
Author: Anders Halverson
Publisher: Yale University Press
ISBN: 0300166869
Category : Science
Languages : en
Pages : 325
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Book Description
Anders Halverson provides an exhaustively researched and grippingly rendered account of the rainbow trout and why it has become the most commonly stocked and controversial freshwater fish in the United States. Discovered in the remote waters of northern California, rainbow trout have been artificially propagated and distributed for more than 130 years by government officials eager to present Americans with an opportunity to get back to nature by going fishing. Proudly dubbed an entirely synthetic fish by fisheries managers, the rainbow trout has been introduced into every state and province in the United States and Canada and to every continent except Antarctica, often with devastating effects on the native fauna. Halverson examines the paradoxes and reveals a range of characters, from nineteenth-century boosters who believed rainbows could be the saviors of democracy to twenty-first-century biologists who now seek to eradicate them from waters around the globe. Ultimately, the story of the rainbow trout is the story of our relationship with the natural world--how it has changed and how it startlingly has not.
Author: Moc Morgan
Publisher: Stackpole Books
ISBN: 9780811716116
Category : Sports & Recreation
Languages : en
Pages : 182
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Book Description
Color photos and recipes for the most effective Welsh flies, with fishing tips and background on the flies.
Author: Supinski Matthew
Publisher: Skyhorse
ISBN: 9781510730298
Category : Sports & Recreation
Languages : en
Pages : 280
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Book Description
Many fishermen will acknowledge that the brown trout (Salmo trutta) and the Atlantic salmon (Salmo salar) are the world?s most intriguing, beautiful and noble fish. Having evolved nearly fifty million years ago in the Eocene epoch, these two species are close genetic cousins and descendants that can be found in oceans, rivers, lakes, and streams across the entire world. The Brown Trout-Atlantic Salmon Nexus is a complete historical, scientific, artistic, culinary, and practical guide to understanding and appreciating these remarkable fish. Veteran author, guide and adventurist; Matthew Supinski first highlights the evolution and history of the brown trout, from its origins in Europe and the Eastern Hemisphere, to its first North American transplanting in 1883, to its spread across the globe. He then touches in-depth on the scientific and angling brilliance of the brown trout/Atlantic salmon lineage praising the two species? remarkable adaptability and resilience. And finally, chapters of fly fishing tactics, fly patterns, artistic appreciation, and culinary/foraging opportunities where they are found throughout the world, will give readers all the information they need to catch, admire and appreciate this magnificent piscatorial legacy. With more than 150 stunning photos, The Brown Trout-Atlantic Salmon Salmo Nexus is a must-have for every passionate fisherman, admirer, artist and culinary naturalist connoisseur to enjoy.
Author: Hugh Falkus
Publisher: Burns & Oates
ISBN: 9780854931446
Category : Sports & Recreation
Languages : en
Pages : 448
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Book Description
This work, written by an experienced angler, covers aspects of the sport such as biology of the fish, tackle, flies and angling methods.
Author: Graeme Harris
Publisher: John Wiley & Sons
ISBN: 0470996013
Category : Technology & Engineering
Languages : en
Pages : 520
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Book Description
The Brown trout displays widely divergent life history strategies involving, variously, usage of streams, rivers, lakes, estuaries and the sea. The sea trout is the full sea-going form, it is very common and competes with salmon for the position of the most sought after migratory salmonid in many countries. Its use of freshwater, estuaries and coastal waters gives it a unique position as a sentinel species of environmental quality across these habitats. Although a commercially and recreationally important fish species, the management and scientific knowledge about sea trout has often been overshadowed by a focus on the salmon. However the First International Symposium for the Biology, Management and Conservation of Sea Trout sought to address this when a group of world class experts convened to share their research and form the basis for this impressive volume, covering: Stocks and fisheries Genetics and life history Ecology and population dynamics Management of stocks and world fisheries Fisheries scientists and managers, fish biologists, aquatic biologists, ecologists, members of fish and wildlife agencies, government departments and libraries in universities and research establishments where fish and fisheries are studied and taught will find this book a fascinating exploration of the species and a valuable reference tool.
Author: Colin D. Levings
Publisher:
ISBN: 9780774831734
Category : Estuaries
Languages : en
Pages : 0
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Book Description
"For centuries, biologists have marvelled at how anadromous salmonids--fish that pass from rivers into oceans and back again--survive as they migrate between these two very different environments. Yet, relatively little is understood about what happens to salmonid species (including salmon, steelhead, char, and trout) in the estuaries where they make this transition from fresh to saltwater. This book, written by one of the world's foremost experts on the ecology of salmonids, explains the critical role estuaries play in salmonid survival and recovery."--
Author: Peter D. Malloch
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 306
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Book Description
