The main focus of the Watershed Biogeochemistry Group is to investigate major elemental cycles in streams and their watersheds, particularly carbon, nitrogen, and phosphorus pools and fluxes. We are especially interested in quantifying and characterizing the rich array of organic molecules that exist in stream ecosystems, and serve as the main food source to microorganisms and consequently to all biological communities. Throughout the watershed, water is found in many places beyond stream channels, including aquifers, soils, and sediments. Our biogeochemistry laboratory has the capabilities to perform a wide range of chemistry analyses in water samples from all these places.
Watershed Biogeochemistry Staff
Watershed Biogeochemistry News
Measurement of assimilable organic carbon in water distribution systems by a simplified bioassay technique
Kaplan, L.A., and T.L. Bott. 1989. Pages 475–498 in Proceedings Water Quality Technology Conference, St. Louis, Missouri.
Bacterial biomass, metabolic state, and activity in stream sediments: relation to environmental variables and multiple assay comparisons
Bott, T.L., and L.A. Kaplan. 1985. Applied and Environmental Microbiology 50:508–522.
Acclimation of stream-bed heterotrophic microflora: metabolic responses to dissolved organic matter
Kaplan, L.A., and T.L. Bott. 1985. Freshwater Biology 15:479–492.
Adenylate energy charge in streambed sediments
Kaplan, L.A., and T.L. Bott. 1985. Freshwater Biology 15:133–138.
Benthic bacterial biomass supported by streamwater dissolved organic matter
Bott, T.L., L.A. Kaplan, and F.T. Kuserk. 1984. Microbial Ecology 10:335–344.
In situ measures of dissolved organic carbon flux in a rural stream
Kuserk, F.T., L.A. Kaplan, and T.L. Bott. 1984. Canadian Journal of Fisheries and Aquatic Sciences 41:964–973.
