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News From the Field

Shifting Baselines Confound River Restoration


September 1, 2009

biology graphic Historical records show that rivers worldwide once held many more species of fish and other fauna than they do today. Overharvesting seems to have been one principle cause of steep declines in recent centuries. Although it is hard to estimate historical numbers of freshwater wildlife with accuracy, efforts to determine earlier levels of abundance may help planners avoid using falsely low estimates as baseline assumptions. Full Story

Source
American Institute of Biological Sciences

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