Scott Van Horn

From 1987 to 1998, gill netting was conducted annually in Jordan Lake, North Carolina, usually 3 times per year with 9 nets distributed over 3 reservoir sub-basins. White perch (Morone americana) began appearing in gill-net samples in 1988. By 1993 they were the second-most abundant species (11.2/net night), following black crappie (Pomoxis nigromaculatus) (21.2/net night). White perch catch rates in 1994 (16. I/net night) exceeded rates for other fish captured in gill nets. White perch continued to constitute a large percentage (21.1%) of the gill-net catch from 1995-1998. Analysis of...

Chiekahominy Reservoir, Virginia, was treated with a mixture of herbicides diquat and endothall to control obnoxious growths of Egeria densa Planchon. Herbicides were undetectable in water by the 16th day after treatment. Herbicides accumulated in plant tissue at levels higher than those in the water. Only diquat accumulated in hydrosoils. Diquat levels in hydrosoils increased as levels in plants and water decreased. All diquat had dissipated from hydrosoils after two years. Neither herbicide concentrated in edible fish flesh. Aerial photographic monitoring revealed the amount of surface...