Pollution history documented through shell remains provides a tool to study ecosystem changes without destroying endangered freshwater mussels

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2003-03-27

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Virginia Tech. University Relations

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In the early 1900s, there were 42 species of freshwater mussels in the North Fork of the Holston River in Southwest Virginia. There were 33 downstream of Saltville. Now there are only nine species of mussels downstream of Saltville, and none directly below Saltville.

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