- Kinsgbury, P.D.
Environment Canada Forestry Service
Throughout the history of aerial chemical control operation in Canada, insecticides have been interacting with aquatic ecosystems. The vast forested areas which have been the sites of these operations are scattered with rivers, lakes and streams, and insecticides have been introduced into watersheds containing the breeding and rearing areas of important commercial and sport fishing stocks, particularly of salmonoid fish. The effects of insecticides on these fish populations and the ecology of their habitat has frequently resulted in conflict between forestry and fishery interests within an area.