Sockeye Salmon Escapement to Windfall Lake During 1997 PDF Download

Author: Richard Yanusz
Publisher:
ISBN:
Category : Sockeye salmon
Languages : en
Pages : 30

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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 612

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Author: Stan R. Carlson
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 46

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From July 21 to September 13, 1997, a fish counting weir was operated below the outlet of Larson Lake, a major producer of sockeye salmon (Oncorhynchus nerka) in the Susitna River Watershed. A mark-recapture (M-R) experiment revealed that the type and method of primary and secondary tagging may be critical to success of recovery sampling conducted in spawning grounds.

Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 450

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Author: Mike Bethers
Publisher:
ISBN:
Category : Sockeye salmon
Languages : en
Pages : 21

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Population estimates of sockeye salmon (Oncorhynchus nerka) in Windfall Lake, Herbert River and Slate Creek near the Glacier Highway in southeast Alaska.

Author: James R. Mackovjak
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 278

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Author: Tim Troll
Publisher:
ISBN: 9780578508795
Category :
Languages : en
Pages : 88

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Bristol Bay in Southwest Alaska is one of the great commercial fisheries on earth. More than half of the world's sockeye salmon return to "The Bay" every year. Sailing for Salmon is a nostalgic look back, through photographs and recollections, on the "sailboat days," a time when these salmon were harvested from sailboats - a time still within living memory. These sailboats, called Bristol Bay double-enders, were well-crafted and beautiful, but obsolete for most of their history. The use of motorized fishing vessels was finally allowed in 1951. The Bristol Bay commercial fishery has changed much since then, but the sailboat remains the iconic image of a fishery born on the wind.

Author: Serge Garcia
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 0

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"Rebuilding depleted stocks is a central part of the fisheries governance agenda. By analysing the available literature, Part 1 of "Rebuilding of marine fisheries" provides a global review of the emergence of the rebuilding paradigm, its key concepts, the trends in fishery resources, and the empirical evidence available on stocks depletion, collapse and rebuilding. It addresses the bio-ecological, economic, and human dimensions of rebuilding or restoration of stocks, multispecies assemblages and habitats/ecosystems and touches on the need for rebuilding at the whole sector level when depletion has become widespread and chronic. The human imensions of stocks and fisheries are given particular attention, looking at conflicting objectives, the bio-economy of rebuilding, its costs and benefits, and the distributional effects of the related reform among actors with their potential social consequences in the short and long terms. Governance is addressed in detail: legal and policy frameworks; rationale and objectives of a rebuilding regime; alternative rebuilding strategies; reference values and protocols; regulatory time-frames; risk management and harvest control rules; impacts of climatic oscillations; management tool-box; implementation guidance and performance evaluation. The document ends with a review of the determinants of success of a rebuilding programme."--Publisher's description for part 1.

Author: Francesca Ottolenghi
Publisher: Fao
ISBN:
Category : Business & Economics
Languages : en
Pages : 344

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"The aim of this report is to define and review this "semi-aquaculture practice", which has been more accurately named "capture-based aquaculture." -- Preface.

Author: National Research Council
Publisher: National Academies Press
ISBN: 9780309045346
Category : Technology & Engineering
Languages : en
Pages : 580

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Book Description
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.