Role of Compensatory Mechanisms in the Population Dynamics of Lake Trout (Salvelinus Namaycush) in the U.S. Waters of Lake Superior PDF Download

Author: Cecilia Paola Ferrero
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 208

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Author: Christopher Todd Weeks
Publisher:
ISBN:
Category : Lake trout
Languages : en
Pages : 228

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Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 844

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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 896

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ISBN:
Category : Fisheries
Languages : en
Pages : 514

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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: Ian G. Cowx
Publisher: John Wiley & Sons
ISBN: 1405147334
Category : Technology & Engineering
Languages : en
Pages : 416

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In this comprehensive edited book, international experts infisheries management and ecology review and appraise the status oflake and reservoir fisheries, assessment of fisheries yields,trophic ecology, rehabilitation and conservation, including aspecial section on African lakes where so much information of hugerelevance to fisheries managers is now available. Contributions from around the world. Carefully edited by internationally respected editor. Has been generated from acclaimed HIFI Symposium.

Author: Melvin L. Warren Jr.
Publisher: Johns Hopkins University Press
ISBN: 1421435128
Category : Science
Languages : en
Pages : 934

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Book Description
The highly anticipated second volume of Freshwater Fishes of North America, a monumental, fully illustrated reference that provides comprehensive details on the freshwater fishes of the United States, Canada, and Mexico. When the first volume of Freshwater Fishes of North America was published, it was immediately hailed as the definitive reference in the field. Readers have been fervently awaiting the next volume in this encompassing three-book set ever since. Now complete, volume 2, covering families Characidae to Poeciliidae, is the result of decades of analysis by leading fish experts from universities and research laboratories across North America. Each volume in this authoritative synthesis covers the ecology, morphology, reproduction, distribution, behavior, taxonomy, conservation, and the fossil record of the included North American fish families. The encyclopedic reviews of each family are accompanied by color photographs (nearly 250 in this volume alone), range maps, and artwork created by noted fish illustrator Joseph R. Tomelleri. The result is a rich textual and visual experience that covers everything known about the diversity, natural history, ecology, and biology of North American freshwater fishes. Volume 2 covers the following North American families of fishes: Characidae (Characins) Ictaluridae (North American Catfishes) Ariidae (Sea Catfishes) Heptapteridae (Three-barbeled Catfishes) Osmeridae (Smelts) Esociformes (Esocidae, Pikes and Umbridae, Mudminnows) Percopsidae (Trout-perches) Amblyopsidae (Cavefishes) Aphredoderidae (Pirate Perches) Gadidae (Cods and Cuskfishes) Mugilidae (Mullets) Atherinopsidae (New World Silversides) Beloniformes (Needlefishes and Halfbeaks) Rivulidae (New World Rivulines) Profundulidae (Middle American Killifishes) Goodeidae (Goodeids) Fundulidae (Topminnows) Cyprinodontidae (Pupfishes) Poeciliidae (Livebearers) The chapter authors of Volume 2 are: Gianetta Adams Clyde Barbour Micah Bennett Ricardo Bentancur-R. Peter B. Z. Berendzen Brooks M. Burr Mollie Cashner Robert C. Cashner Bruce B. Collette Matthew Davis Alice F. Echelle Anthony A. Echelle Fernando Galvez Michael Ghedotti Nicholas Gidmark Terry Grande Robert L. Hopkins Lauren M. Kuehne Frank McCormick Norman Mercado-Silva Ann U. O'Connell Martin T. O'Connell Julian D. Olden Claudia Patricia Ornelas-Garcia Mark Sabaj Perez Kyle R. Piller Steven Powers Jacob Schaefer Juan J. Schmitter-Soto Andrew M. Simons Roger A. Tabor Cheryl Thiele Matthew Thomas Melvin L. Warren, Jr. Mark V. H. Wilson

Author: John Netto (Ph. D.)
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 212

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Author: Jerry Johnson
Publisher: Rowman & Littlefield
ISBN: 1589795229
Category : Nature
Languages : en
Pages : 185

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Book Description
Visitors to Yellowstone National Park are drawn to the spectacular scenery, unique thermal features, and the large numbers of wild animals easily observed in their natural habitat. The thoughtful visitor to the park cannot help but be captivated by the unparalleled breadth of scientific knowledge needed to understand the intricate interrelationships that make up the yellowstone landscape. Knowing Yellowstone explores how scientists discover what they know about America's first national park and the surrounding lands. The chapter authors are scientists who represent the best of their fields of study. The science they describe is leading the way to our understanding of complex ecosystems worldwide.