River Damming Leads To Dramatic Decline In Native Fish Numbers

ScienceDaily (July 14, 2008) — Damming of the Colorado River over the last century, alongside introduction of game fish species, has led to an extensive decline in numbers of native fish* whilst introduced species have flourished. Scientists have found that physical changes which occur to a river when it is dammed have had an adverse effect only on native fish, due to differences in their life histories.

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