Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effects of Natural Sediment Features on Survival of the 'Phoxocephalid amphipod', 'Rhepoxynius abronius'.
Author DeWitt, T. H. ; Ditsworth, G. R. ; Swartz, R. C. ;
CORP Author Environmental Research Lab.-Narragansett, Newport, OR. Mark O. Hatfield Marine Science Center. ;Oregon State Univ., Newport. Hatfield Marine Science Center.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/555 ;ERLN-N040;
Stock Number PB91-144741
Additional Subjects Water pollution effects(Animals) ; Marine biology ; Sediments ; Field tests ; Puget sound ; Particle size ; Bioassay ; Environmental monitoring ; Mortality ; Chemical water pollutants ; Reprints ; Rhepoxynius abronius
Library Call Number Additional Info Location Last
NTIS  PB91-144741 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/13/1991
Collation 28p
Effects of sediment particle size and water content on the survival of the amphipod. Rhepoxynius abronius, were examined by manipulating these natural sediment features within static laboratory microcosms. Mean amphipod survival in fine, uncontaminated, field sediments (> or = to 80% silt-clay) can be 15% lower than survival in native sediment. Storage of sediments at 4 C over 7-14 days did not change sediment toxicity, but handling (i.e. elutriation and recombination) of muddy sediments increased toxicity. Sediment particle size and organic content had greater impact on the survival of R. abronius than did sediment water content in modifying amphipod survival, but one can not independently separate the effects of these two sediment variables. A new set of criteria is proposed to interpret toxicity results from the amphipod bioassay in the light of the mortality associated with fine sediment particle size.