PMID: 15378995Sep 24, 2004Paper

Assessment of macrobenthos response to sediment contamination in the San Francisco Estuary, California, USA

Environmental Toxicology and Chemistry
Bruce Thompson, Sarah Lowe

Abstract

A multimetric benthic assessment method was developed for two benthic assemblages in the San Francisco Estuary (USA) using data from several monitoring programs collected over five years. Assessment indicators used were total number of taxa, total abundances, oligochaete abundances, number of molluscan taxa, number of amphipod taxa, and Capitella capitata and Streblospio benedicti abundances. Exceedances of the maximum or minimum indicator values in reference samples were used to assess test samples using a weight-of-evidence to obtain an assessment value. Only 2.5% of the samples from the deeper, offshore sites had benthic impacts, 14.3% of the samples from near wastewater discharges had impacts, and 78.3% of the samples from the estuary margins and channels were impacted. Impacted samples from both assemblages had significantly higher mean effects range-median quotient values (mERMq) than reference samples, total organic carbon (TOC) was significantly higher in the impacted samples from the mesohaline assemblage, and percent fines was significantly higher in the impacted samples from the polyhaline assemblage, reflecting the close associations of contaminants with fine sediments and organic material. In samples with mERMq bel...Continue Reading

Citations

Mar 2, 2006·Risk Analysis : an Official Publication of the Society for Risk Analysis·Douglas L Weed
Jan 26, 2012·Integrated Environmental Assessment and Management·Kerry J RitterL Jay Field
Oct 13, 2010·Integrated Environmental Assessment and Management·Kamille K HammerstromJames M Oakden
Oct 5, 2010·Integrated Environmental Assessment and Management·Steven M Bay, Stephen B Weisberg
May 12, 2011·Environmental Toxicology and Chemistry·Elisabeth M-L JanssenRichard G Luthy
Sep 12, 2006·Environmental Research·Brian AndersonR Scott Carr
Dec 15, 2006·Environmental Research·Bruce ThompsonKaren Taberski
Feb 4, 2009·Environmental Management·Roberta BettinettiDavide A L Vignati
Feb 11, 2010·Marine Pollution Bulletin·J Ananda RanasingheCheryl A Brantley
Mar 31, 2006·Environmental Science & Technology·Edward R LongDonald D MacDonald

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