Short term chronic and acute toxicity screening of water and sediment using fathead minnows, daphnids, rotifers (Rotox(reg sign)) and light emitting bacteria (Microtox(reg sign)), Ambient Stream Monitoring, summers of 1990 and 1991

摘要

Toxicological evaluation of water column and sediment samples from six locations in the Ambient Stream Monitoring fixed station network was initiated in 1986 using short-term chronic bioassay methods. Toxicological evaluation of six additional stations was initiated in 1990. Chronic studies were conducted at one of these new stations and acute screening methods were used at all twelve locations now included in the activity. This report provides results from studies conducted during the summers of 1990 and 1991. The 1990--91 studies evaluated toxicity of stream water and porewater extracted from sediments as test media, whereas previous studies evaluated water and sediment elutriate samples.