Spatial distribution of acid-volatile sulfur in the sediments of Canadohta Lake, PA
Article
Oehm, NJ, Luben, TJ, Ostrofsky, ML. (1997). Spatial distribution of acid-volatile sulfur in the sediments of Canadohta Lake, PA
. HYDROBIOLOGIA, 345(1), 79-85. 10.1023/A:1002971130433
Oehm, NJ, Luben, TJ, Ostrofsky, ML. (1997). Spatial distribution of acid-volatile sulfur in the sediments of Canadohta Lake, PA
. HYDROBIOLOGIA, 345(1), 79-85. 10.1023/A:1002971130433
Lake sediments are an important source of dissolved substances and can be the site of processes important to the biogeochemical cycling of nutrients and metals. Most studies which examine these processes, however, are based on the analysis of a single or a very few sediment cores taken at or near the deepest area of the lake. The implicit assumption is that lake sediments are spatially homogeneous and that extrapolations from such limited samples are representative of the lake sediments throughout the lake basin. We examined this assumption with respect to concentrations of acid volatile sulfides (S2-(vol)) - sulfur species which have been implicated in eutrophication, acid-neutralization, and heavy-metal toxicity. S2-(vol) concentrations measured in the surficial sediments of Canadohta Lake, PA, a lake of very simple morphometry, ranged from 0.07 to 30.32 μg g-1 sediment dry weight. Concentrations were directly correlated with depth and inversely correlated with organic matter. These results suggest that results extrapolated from a few deep-water cores can lead to a serious overestimation of S2- (vol) in the lake sediments.
