Heres a little snippet from James F. Keefe about biodiversity
Lake Taneycomo (in Taney County, Missouri) was drastically altered when Table Rock dam was built, because water entering Taneycomo from the bottom of Table Rock Lake was too cold to support the fish species that had lived in Lake Taneycomo. The Missouri Department of Conservation created a trout fishery where a warm-water fishery once existed to offset the lost species, but there was a considerable loss in bio-diversity in the lake. The Department of Conservation introduced a freshwater "shrimp" called gammarus into the lake to provide food for the trout, a tiny addition to the lake's bio-diversity. But populations of gammarus have declined as the area has developed and the result has been smaller trout for the angler. It is not yet known why the gammarus have declined, but there is little doubt that some changes in the lake have affected their population and those changes must have resulted from man's activities in the watershed.
This was from 92