Upper Midwest Environmental Sciences Center
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Arseneault, M. (1994). Salmon saga: Murphy's law as a fish story. Ceres. Rome. 26:10-12.
For thousands of years salmon (Salmonidae) and 7 other species of fish migrated up the Dordogne in France. At the turn of the 20th Century hydroelectric dams were constructed along the river, impeding salmon reproduction; despite the construction of fish ladders at the dams, by 1920 the salmon had disappeared from the Dordogne. A salmon restoration project was initiated but 15 years and 40 million FF later the salmon have still not returned. The various problems encountered in trying to ensure the return of the salmon to the river are discussed.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/arseneault.html
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November 3, 2015
