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Penczak, T., R. Mahon and E. K. Balon (1984). The effect of an impoundment on the upstream and downstream fish taxocenes (Speed River, Ontario, Canada). Archiv fur Hydrobiologie. 99:200-207.
After damming of the Speed River substantial qualitative and quantitative changes were observed in the fish taxocenes at two localities, one upstream and the other downstream. Upstream the species composition changed only slightly, but the total populations biomass increased growth rates. Downstream new species were found and four previously dominant species were absent, probably as a result of the cold hypolimnial water released from the reservoir. Disturbances or declines in reproduction of several species were observed. In spite of this the production increased 3.2 times.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/URL: http://www.umesc.usgs.gov/data_library/fisheries/fish_passage/penczak.html
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