RRC ID 21655
Author Okamura H, Piao M, Aoyama I, Sudo M, Okubo T, Nakamura M.
Title Algal growth inhibition by river water pollutants in the agricultural area around Lake Biwa, Japan.
Journal Environ. Pollut.
Abstract An ecotoxicological study of river water discharged from the agricultural area around Lake Biwa was performed by using algal bioassays to guide chemical analysis. Water samples were collected once a week, at least, for 1 year starting in April 1997 and continuing until April 1998. The toxicities of the dissolved and particulate-adsorbed extracts of water samples were evaluated by the algal growth inhibition test and concentrations of individual pesticides were determined. Most of the river water that was collected during the periods when pesticides were applied to the paddy fields caused algal growth inhibition. Some extracts were found to contain herbicides (molinate, mefenacet, simetryn, or esprocarb) as major compounds. According to chemical assay and bioassay, simetryn was identified as the most toxic compound that caused algal growth inhibition.
Volume 117(3)
Pages 411-9
Published 2002
PII S0269-7491(01)00196-8
PMID 11911525
MeSH Agriculture / methods Animals Araceae / drug effects Biological Assay Chlorophyta / drug effects* Chlorophyta / growth & development Daphnia / drug effects Ecology Fresh Water / analysis* Japan Lettuce / drug effects Pesticides / analysis Pesticides / toxicity* Seasons Water Movements Water Pollutants, Chemical / analysis Water Pollutants, Chemical / toxicity* Water Pollution, Chemical / analysis
IF 5.714
Times Cited 38
Algae NIES-35