Fall 2010 Field Surveys
August 17 J. Strom Thurmond Reservoir
August 19 Lake Varner
Micrograph of Stigonematales species colony growing on hydrilla at Varner August 2010
This August 2010 screening data from two confirmed AVM sites is consistent with previous years. We documented that the hydrilla leaves have a high (5-90%) coverage by the new species of cyanobacteria Stigonematales species. Additional species (in red) growing on the hydrilla that can produce toxins include: Anabaena, Gloeotrichia, Lyngbya, Microcystis, Nostoc, Oscillatoria, and Pseudanabaena
Potential field sites 2010
AVM lakes with hydrilla include: DeGray Lake, Lake Ouachita (AR), Sam Rayburn Reservoir (TX), Lake Murray, Davis Pond, (SC) J. Strom Thurmond Reservoir (SC/GA) Lake Juliette, Emerald Lake, Lake Horton, Smith Reservoir, Lake Varner (GA), Coachmans Trail, Woodlake (NC)
AVM lakes with Egeria densa include: DeGray Lake, Lake Ouachita (AR) Lake Juliette (GA)
AVM lakes with Eurasian watermilfoil include: Lake Hamilton (AR), L Lake and Par Pond (SC), Lake Juliette (GA)
