Yakima River Species Interactions Studies, Annual Report 1999.

Pearsons, Todd N.

Washington (State). Department of Fish and Wildlife.

关键词: Monitoring;    Ecology;    Progress Report;    Rivers;    Salmon;   

DOI  :  10.2172/782882
RP-ID  :  DOE/BP-64878-7
RP-ID  :  1995BI64878
RP-ID  :  782882

美国|英语

来源: UNT Digital Library

【 摘 要 】

Species interactions research and monitoring was initiated in 1989 to investigate ecological interactions among fish in response to proposed supplementation of salmon and steelhead in the upper Yakima River basin. This is the eighth of a series of progress reports that address species interactions research and pre-supplementation monitoring of fishes in the Yakima River basin. Data have been collected prior to supplementation to characterize the ecology and demographics of non-target taxa (NTT) and target taxon, and develop methods to monitor interactions and supplementation success. Major topics of this report are associated with implementing NTT monitoring prescriptions for detecting potential impacts of hatchery supplementation, hatchery fish interactions, and monitoring fish predation indices. This report is organized into four chapters, with a general introduction preceding the first chapter. This annual report summarizes data collected primarily by the Washington Department of Fish and Wildlife (WDFW) between January 1, 1998 and December 31, 1999 in the Yakima basin, however these data were compared to data from previous years to identify preliminary trends and patterns.