Benthic Invertebrate Community Measures Among Stream Channel Types of the Copper River Delta, Southcentral, Alaska PDF Download
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Author: Todd C. White
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 120
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Book Description
The Copper River Delta of Southcentral Alaska is the largest contiguous wetland on the North American Pacific coast, and supports economically important commercial and recreational fisheries for all five species of pacific salmon. Some biological factors influencing salmon populations in the Copper River Delta have been previously investigated, but little effort has been made to establish baseline information on freshwater aquatic communities in the region. In an effort to provide area managers with aquatic community measures for future comparisons, benthic invertebrate community structure was contrasted among twelve streams representing six stream channel types common to the area and important to salmonid development. In general, invertebrate density, taxa richness, and diversity were greatest in channel types designated as high potential for salmonids. Taxonomic and functional feeding group measures show that macroinvertebrate communities of Copper River Delta streams sampled are representative of early (
Author: Todd C. White
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 120
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Book Description
The Copper River Delta of Southcentral Alaska is the largest contiguous wetland on the North American Pacific coast, and supports economically important commercial and recreational fisheries for all five species of pacific salmon. Some biological factors influencing salmon populations in the Copper River Delta have been previously investigated, but little effort has been made to establish baseline information on freshwater aquatic communities in the region. In an effort to provide area managers with aquatic community measures for future comparisons, benthic invertebrate community structure was contrasted among twelve streams representing six stream channel types common to the area and important to salmonid development. In general, invertebrate density, taxa richness, and diversity were greatest in channel types designated as high potential for salmonids. Taxonomic and functional feeding group measures show that macroinvertebrate communities of Copper River Delta streams sampled are representative of early (
Author:
Publisher:
ISBN:
Category : Alien plants
Languages : en
Pages : 220
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Book Description
Describes a ranking system used to evaluate the potential invasiveness and impacts of 113 non-native plants to natural areas in Alaska. Species are ranked by a series of questions in four broad categories: ecosystem impacts, biological attributes, distribution, and control measures. Also included is a climate screening procedure to evaluate the potential for establishment in three ecogeographic regions of Alaska [Juneau, Fairbanks, Nome].
Author: J. David Allan
Publisher: Springer Science & Business Media
ISBN: 9401107297
Category : Science
Languages : en
Pages : 385
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Book Description
Running waters are enormously diverse, ranging from torrential mountain brooks, to large lowland rivers, to great river systems whose basins occupy subcontinents. While this diversity makes river ecosystems seem overwhelmingly complex, a central theme of this volume is that the processes acting in running waters are general, although the settings are often unique. The past two decades have seen major advances in our knowledge of the ecology of streams and rivers. New paradigms have emerged, such as the river continuum and nutrient spiraling. Community ecologists have made impressive advances in documenting the occurrence of species interactions. The importance of physical processes in rivers has attracted increased attention, particularly the areas of hydrology and geomorphology, and the inter-relationships between physical and biological factors have become better understood. And as is true for every area of ecology during the closing years of the twentieth century it has become apparent that the study of streams and rivers cannot be carried out by excluding the role of human activities, nor can we ignore the urgency of the need for conservation. These developments are brought together in Stream Ecology: Structure and function of running waters, designed to serve as a text for advanced undergraduate and graduate students, and as a reference book for specialists in stream ecology and related fields.
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1374
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Book Description
Author: William S. Alevizon
Publisher: Bookbaby
ISBN: 9781543948349
Category : Science
Languages : en
Pages : 0
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Book Description
The original report From the Sierra to the Sea: Ecological History of the San Francisco Bay-Delta Watershed was a product of a three-year effort to develop a landscape level overview of the natural ecological structure, function and organization of the watershed, and the way it had changed over the course of the 19th and 20th centuries. Technical review and contributions from government and water agencies helped produce a collaborative document that provided information on the historical ecological baseline in order to assist in what was envisioned at the time as the most ambitious restoration effort ever undertaken in the United States. We are proud of the fact that the original document is still used as an objective reference, and has provided a foundation and inspiration for similar but more intensively researched localized efforts by others in the Bay-Delta watershed. This 20th anniversary edition contains a new Afterword describing changes to the estuary and its watershed since the report was originally published in 1998.
Author: Alexander M. Milner
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 186
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Book Description
Author: James H. Thorp
Publisher: Academic Press
ISBN: 0123748550
Category : Nature
Languages : en
Pages : 1036
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Book Description
"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.
Author:
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 52
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Book Description
Author: Leandro Miranda
Publisher:
ISBN: 9780692798720
Category :
Languages : en
Pages : 306
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Book Description
Author:
Publisher:
ISBN:
Category : Mountain ecology
Languages : en
Pages : 348
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Book Description
