Accession Number : ADA134341

Title :   Aquatic Plant Control Research Program. Large-Scale Operations Management Test of Use of the White Amur for Control of Problem Aquatic Plants. Reports 2 and 3. First and Second Year Poststocking Results. Volume 5. The Herpetofauna of Lake Conway, Florida: Community Analysis.

Descriptive Note : Technical rept.,


Personal Author(s) : McDiarmid,Roy W ; Bancroft,G Thomas ; Godley,J Steve

PDF Url : ADA134341

Report Date : Jul 1983

Pagination or Media Count : 171

Abstract : Approximately 90 percent of the species known from Lake Conway were recorded with the first 2,900 specimens (24 percent) sampled, and this occurred during the first nine months of the three-year study. The turtle Sternotherus odoratus was the most common species on Lake Conway and accounted for 29.5 percent of the total sample. Of the 29 species recorded in Lake Conway, 14 (48 percent) were recorded in all pools. These 14 species included the most common amphibians and reptiles in the lake and accounted for 95.3 percent of all records. Thirteen species were identified as functionally important species in the community dynamics of the Lake Conway herpetofauna. Two large salamanders decreased significantly during the study. In contrast to the salamanders, frogs, as documented by the number of calling males, showed an overall increase in density during the study. The density of alligators decreased and that of most turtles declined significantly through the study. The density of snakes also declined dramatically on the lake. Human disturbance of several types was identified as the major causative factor associated with the population declines of many species on Lake Conway. However, reductions in density or changes in feeding activity and habitat use of one salamander (Siren lacertina) and three turtles (Pseudemys floridana, Pseudemys nelsoni, and Sternotherus odoratus) were directly the result of or were affected by the feeding activity of the white amur.

Descriptors :   *Lakes, *Aquatic animals, Florida, Amphibians, Reptiles, Population, Density, Variations, Statistical analysis, Fishes, Biological weed control, Environmental impact

Subject Categories : Biology
      Hydrology, Limnology and Potamology

Distribution Statement : APPROVED FOR PUBLIC RELEASE