Macrozoobenthos of the Detroit and St. Clair Rivers with Comparisons to Neighbouring Waters |
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Authors: | Stewart Thornley |
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Affiliation: | Ontario Ministry of the Environment, London, Ontario N6E 1V3 |
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Abstract: | A comparison of the results from macrozoobenthic surveys of the Detroit River (1968 and 1980) showed spatial and temporal differences in the types and distribution of organisms recovered. Similar comparisons were also made from studies of the St. Clair River (1968 and 1977) and the western basin of Lake Erie (1967 and 1979). Results are also presented from a 1983 study of Lake St. Clair. These studies indicate a general improvement in the macrozoobenthos of the area, exhibited by a stronger representation of pollution sensitive organisms and an improved community structure. The studies demonstrate both the sensitivity of these large rivers and lakes and their recuperative capabilities following pollution abatement measures. Despite the documented improvements, large areas of impairment still exist, particularly in the St. Clair and Detroit rivers. |
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Keywords: | Benthos sediments |
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