Enchytraeid oligochaetes as marine pollution indicators |
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| Authors: | Kathryn Coates Derek V Ellis |
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| Institution: | Biology Department, University of Victoria, Victoria, British Columbia, Canada V8W 2Y2 |
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| Abstract: | Fifteen species of enchytraeid oligochaetes have been collected from a pulp mill waste receiving area. Of these, one species Lumbricillus lineatus which is a known stressresistant intertidal form is predominant within 1.5 km of the mill outfall. Beyond that distance the species is replaced by a variable association of 14 other species from the genera Lumbricillus, Marionina and Enchytraeus. L. lineatus is common in Europe and eastern North America in upper intertidal drift habitats, but on the Pacific Coast is not indigenous. In British Columbia it has only been collected adjacent to three pulp mills, not at five other such mills, nor at ten undisturbed intertidal stations at each of which a diverse association of Enchytraeid species occurs. L. lineatus can serve as an index of the impact of pulp mill effluent at the site investigated. The most practical index is percentage of total adult enchytraeids represented by L. lineatus. |
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