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Watershed assessment
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Biological communities
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Thematic Classification -- Plants and Animals -- Fish
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Water pollution effects
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1. [Article] Summary of information on aquatic biota and their habitats in the Willamette Basin, Oregon, through 1995
This report reviews and summarizes available information on aquatic biological communities in the Willamette Basin through 1995. Specifically, the report describes (1) the distribution, abndance, and trends ...Citation