00000nam 2200000zi 4500 9.911524 CaOODSP 20220725133624 m o d f cr mn||||||||| 220517s1989 bccab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-bc En37-534/1989E-PDF Preliminary evaluation of selected pesticides in the Nicomekl River Watershed, lower Fraser Valley, B.C., and proposed approaches for assessing toxicity to aquatic biota / prepared for Environment Canada, Inland Waters Directorate, Water Quality Branch, Pacific & Yukon Region ; prepared by COASTLINE Environmental Services Ltd. Vancouver, B.C. : COASTLINE Environmental Services Ltd., 1989. 1 online resource (1 volume (various pagings)) : illustrations, maps text txt rdacontent computer c rdamedia online resource cr rdacarrier "June 1989." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Analysis of dinoseb and endosulfan in samples of sediment and water collected from the Nicomekl River and farmland ditches on March 16, 1989 / prepared for Coastline Environmental Services Ltd. ; prepared by C.S. Alleyne. "A multi-year project to assess the potential toxic effects of agricultural crop pesticides on aquatic biota within the Lower Fraser Valley, B.C., was commenced in late 1988. This report describes the Phase I tasks undertaken and completed to initiate the project. The overall objective of Phase I was to develop a site-specific approach for predicting and monitoring the potential toxic effects on aquatic biota of pesticides entering a receiving-water body by surface water runoff from commercial farms. Initially, those herbicides and insecticides registered in Canada and marketed to farmers in the Lower Fraser Valley were examined with respect to their perceived regional use and hazard to the freshwater environment. Based on this appraisal, dinoseb (herbicide) and endosulfan (insecticide) were selected for investigation of their presence and potential toxicity to aquatic life frequenting the study area"--Summary, page ii (first section). Fishes Effect of pesticides on British Columbia Nicomekl River Watershed. Freshwater invertebrates Effect of pesticides on British Columbia Nicomekl River Watershed. Herbicides Toxicology British Columbia Nicomekl River Watershed. Insecticides Toxicology British Columbia Nicomekl River Watershed. Poissons Effets des pesticides sur Colombie-Britannique Nicomekl, Bassin de la. Invertébrés d'eau douce Effets des pesticides sur Colombie-Britannique Nicomekl, Bassin de la. Herbicides Toxicologie Colombie-Britannique Nicomekl, Bassin de la. Insecticides Toxicologie Colombie-Britannique Nicomekl, Bassin de la. Canada. Inland Waters Directorate. Pacific and Yukon Region. Water Quality Branch, issuing body. PDF 4.50 MB https://publications.gc.ca/collections/collection_2022/eccc/En37-534-1989-eng.pdf