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Biological invasions increasing due to freshwater impoundments, says CU-Boulder study
Date:9/2/2008

lations through predation and competition. Johnson said.

Climate-induced changes to water availability and increasing demand for water and flood control are expected to drive the construction of new reservoirs to increase water supplies in many regions of the United States, including the Midwest, said the authors.

Dam construction and biological invasions are major contributors to the biodiversity crisis in freshwater ecosystems, which exhibit higher rates of extinction and a greater proportion of threatened and endangered species than in terrestrial or marine environments, said Johnson.

There are more than 80,000 large dams and an additional 2.5 million smaller impoundments across the United States, said Johnson.


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Contact: Pieter Johnson
pieter.johnson@colorado.edu
303-492-5623
University of Colorado at Boulder
Source:Eurekalert  

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