Analysis of Chinook Salmon in the Columbia River from an Ecosystem Perspective. Final Report. | Zendy

James A. Lichatowich | Zendy; Lars E. Mobrand | Zendy

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Analysis of Chinook Salmon in the Columbia River from an Ecosystem Perspective. Final Report.

Author(s) -

James A. Lichatowich,

Lars E. Mobrand

Publication year - 1995

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/81930

Subject(s) - chinook wind , context (archaeology) , ecosystem , geography , habitat , life history , ecology , biodiversity , oncorhynchus , fishery , environmental science , biology , archaeology , fish <actinopterygii>

Ecosystem Diagnosis and Treatment (EDT) methodology was applied to the analysis of chinook salmon in the mid-Columbia subbasins which flow through the steppe and steppe-shrub vegetation zones. The EDT examines historical changes in life history diversity related to changes in habitat. The emphasis on life history, habitat and historical context is consistent with and ecosystem perspective. This study is based on the working hypothesis that the decline in chinook salmon was at least in part due to a loss of biodiversity defined as the intrapopulation life history diversity. The mid Columbia subbasins included in the study are the Deschutes, John Day, Umatilla, Tucannon and Yakima

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