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- W2000854446 abstract "We examined changes in certain structural and functional aspects of the benthic invertebrate community in the Penobscot River, Maine, between 1974 and 1981. During this period, two pulp and paper manufacturers and three municipalities spent an estimated $33 million to reduce point source effluents harmful to aquatic life. We developed a biotic index based on objectively derived pollution tolerance values for resident taxa. Analysis of the benthic invertebrate community indicated that substantial improvement in water quality had resulted from pollution abatement. We established a four-group water quality classification scheme based on biotic index ranges, and showed that every site that was not in the best water quality classification in 1974 improved its classification to a better water quality group in 1981, and that the sites in the best group did not change. Relative abundances of functional feeding groups also changed, as were predicted by the river continuum theory. The effluents had acted as a “reset mechanism” that shifted polluted areas from autotrophic to more heterotrophic conditions. The direction of the shift was reversed in response to abatement efforts. Functional analyses of energy dynamics could lead to a more ecologically sound classification of water quality." @default.
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- W2000854446 date "1985-06-01" @default.
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- W2000854446 title "BENTHIC INVERTEBRATE RESPONSE TO POLLUTION ABATEMENT: STRUCTURAL CHANGES AND FUNCTIONAL IMPLICATIONS" @default.
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- W2000854446 doi "https://doi.org/10.1111/j.1752-1688.1985.tb00161.x" @default.
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