Availability of Invertebrate Food Sources for Rearing Juvenile Chinook Salmon in Turbid Susitna River Habitats PDF Download
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Author: Tim F. Hansen
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 274
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Book Description
Benthic and drifting invertebrates were sampled to evaluate fish food resources and the gain and loss of benthic invertebrate habitat resulting from flow changes.
Author: Tim F. Hansen
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 274
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Book Description
Benthic and drifting invertebrates were sampled to evaluate fish food resources and the gain and loss of benthic invertebrate habitat resulting from flow changes.
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 164
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Book Description
Author: Arthur C. Benke
Publisher: Elsevier
ISBN: 0080454186
Category : Nature
Languages : en
Pages : 1168
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Book Description
AWARDS:2006 Outstanding Academic Title, by CHOICEThe 2005 Award for Excellence in Professional and Scholarly Publishing by the Association of American Publishers (AAP) Best Reference 2005, by the Library JournalRivers of North America is an important reference for scientists, ecologists, and students studying rivers and their ecosystems. It brings together information from several regional specialists on the major river basins of North America, presented in a large-format, full-color book. The introduction covers general aspects of geology, hydrology, ecology and human impacts on rivers. This is followed by 22 chapters on the major river basins. Each chapter begins with a full-page color photograph and includes several additional photographs within the text. These chapters feature three to five rivers of the basin/region, and cover several other rivers with one-page summaries. Rivers selected for coverage include the largest, the most natural, and the most affected by human impact. This one-of-a-kind resource is professionally illustrated with maps and color photographs of the key river basins. Readers can compare one river system to another in terms of its physiography, hydrology, ecology, biodiversity, and human impacts.* Extensive treatment provides a single source of information for North America's major rivers* Regional specialists provide authoritative information on more than 200 rivers* Full-color photographs and topographical maps demonstrate the beauty, major features, and uniqueness of each river system* One-page summaries help readers quickly find key statistics and make comparisons among rivers
Author: Laura Gutierrez
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 126
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Book Description
Terrestrial prey subsidies can be a key food source for stream fish, but their importance and environmental controls on their abundance have not been widely documented in high latitude ecosystems. This study investigated terrestrial invertebrate prey availability and predation by age-0+ juvenile chinook salmon (Oncorhynchus tshawytscha), overlap between terrestrial infall and drift to diet, and the relationship between diet to stream temperature and discharge in the Chena River, Interior Alaska. Terrestrial infall, drift, and juvenile chinook diet varied widely through the summers (May-September) of 2008 and 2009. Drift was comprised of 33% terrestrial and 67% aquatic invertebrate mass, while juvenile chinook diet contained 19% terrestrial, 80% aquatic, and 1% unidentifiable invertebrate mass. The proportion of terrestrial invertebrate mass consumed increased through summer and, at times, made up to 39% of total diet. Low similarity of invertebrates in diet and infall, and diet and drift suggested that fish were, in part, prey-selective, selecting hymenopterans and chironomid midges (Diptera). In both years, prey mass consumed and discharge varied inversely, but no correlation was found between proportion of terrestrial invertebrates consumed and discharge. However, the two sampling dates with the highest proportion of terrestrial invertebrates consumed occurred shortly after a 60-year flood, indicating that terrestrial invertebrates may be important during rain and associated high water. This study found that, although terrestrial infall and drift are highly variable, terrestrial invertebrates are an important prey resource for rearing chinook salmon in this high latitude riverine system, especially later in the summer.
Author: Library of Congress. Exchange and Gift Division
Publisher:
ISBN:
Category : State government publications
Languages : en
Pages : 1136
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Book Description
June and Dec. issues contain listings of periodicals.
Author: Robert F. Raleigh
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 80
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 718
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Book Description
Author: Lyman K. Thorsteinson
Publisher:
ISBN:
Category : Coastal ecology
Languages : en
Pages : 110
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Book Description
Provides a synthesis of environmental information on the Yukon Delta, primarily using results from studies conducted since 1983. The synthesis characterizes the major physical properties and resources of the Yukon Delta and identifies regional trends in biological use of major habitats.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
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Book Description
Author: William S. Platts
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 18
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Book Description
