Accession Number : ADA116376

Title :   Grays Harbor and Chehalis River Improvements to Navigation Environmental Studies. Benthic Invertebrate Studies in Grays Harbor, Washington,


Personal Author(s) : Albright,Richard ; Borithilette,Patricia K

PDF Url : ADA116376

Report Date : Apr 1982

Pagination or Media Count : 244

Abstract : Benthic invertebrate assemblages at five intertidal and seven subtidal sites in Grays Harbor, Washington, were assayed with special emphasis on benthic macroinfauna. Quantitative samples were taken seasonally at all sites, and often at several elevations within sites. Invertebrate assemblages were recorded for each season, and Shannon-Wiener diversity values were calculated. Intertidal diversity values generally increased with decreasing elevation. No clear seasonal patterns of change in diversity at each elevation were evident. However, lowest diversity values occurred at Cosmopolis (the least saline site) while the most oceanward intertidal site (Moon Island) had generally high diversity values. Subtidal diversity values generally increased from the inner harbor to the outer harbor.

Descriptors :   *Harbors, *Rivers, *Washington(State), *Invertebrates, Navigation, Environments, Sampling, Patterns, Seasonal variations

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE