||Long-term trends in Puget Sound marine fishes selected data sets /
Miller, Bruce S. ;
Moulton, L. L. ;
Stadler, J. H.
||Washington Univ., Seattle. Fisheries Research Inst.;Environmental Protection Agency, Seattle, WA. Region X.
||Fisheries Research Institute, School of Fisheries, University of Washington,
||EPA 910-9-91-010; FRI-UW-9105
Fishery resources--Washington (State)--Puget Sound ;
Marine fishes--Washington (State)--Puget Sound ;
Fisheries--Washington (State)--Puget Sound--Catch effort
Marine fish ;
Marine biology ;
Puget Sound ;
Environmental monitoring ;
Long term effects ;
Data processing ;
Species diversity ;
Population distribution ;
Aquatic ecosystems ;
Geographical Distribution Data ;
University of Washington Research Beach Seine Data ;
University of Washington Research Trawl Data
||Region 10 Library/Seattle,WA
||Some EPA libraries have a fiche copy filed under the call number shown.
||ix, 38 p. : ill., map ; 28 cm.
The primary objective of the project was to analyze long-term trends in Puget Sound marine fishes based on a synthesis of available data. Three data sets were chosen for trend analysis: geographical distribution data, University of Washington research beach seine data, and University of Washington research trawl data. The geographical distribution data consisted of frequency of occurrence (presence-absence) data that was analyzed in terms of (1) the occurrence of rare (exotic) marine fish that entered Puget Sound from ocean waters on occasion, and (2) the occurrence of marine fish species that were commonly caught in research trawls in Puget Sound. While frequency of occurrence did seem to measure real changes in abundances of some populations (most notably localized declines), there was no indication of a serious change in the relative occurrence of marine fish in Puget Sound. Data on commercial species is often not very useful for looking at long term trends other than trends within that given fishery. It is often impossible to separate trends due to fishery pressures from those that are environmentally driven. Thus, the authors believe that there is a strong case for monitoring as many non-economically important fish species as possible. Ideally this would include assemblages of fish species occupying the major habitat types of Puget Sound.
"Final report for Washington Sea Grant Program in cooperation with the U.S. Environmental Protection Agency, Puget Sound Estuary Program." "April 1991." "EPA-910/9-91-010." "FRI-UW-9105." "EPA interagency agreement no. 8BML87A000." Includes bibliographical references (p. 34-35).