| using the sediment quality triad to characterize baseline conditions in the anacostia river, washington, dc, usa. | the sediment quality triad (sqt) consists of complementary measures of sediment chemistry, benthic community structure, and sediment toxicity. we applied the sqt at 20 stations in the tidal portion of the anacostia river from bladensburg, md to washington, dc to establish a baseline of conditions to evaluate the effects of management actions. sediment toxicity was assessed using 10-day survival and growth tests with the freshwater amphipod, hyalella azteca and the midge, chironomus dilutus. trip ... | 2009 | 18677546 |