Colorado River Clams Provide Benchmark

Science  15 Dec 2000:
Vol. 290, Issue 5499, pp. 2045-2046
DOI: 10.1126/science.290.5499.2045a

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Conservationists have long contended, largely in impressionistic terms, that 70 years of American dam building and water diversion have destroyed the biological richness of the Colorado River delta, a key nursery of marine life at the end of the Southwest's great watercourse. Now researchers have confirmed those suspicions, using an important ecological player--clams--as a quantitative marker.