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
Evaluation and simplification of the assimilable organic carbon nutrient bioassay for bacterial growth in drinking water
Kaplan, L.A., T.L. Bott, and D.J. Reasoner. 1993. Applied and Environmental Microbiology 59(5):1532–1539.
Development of a rapid assimilable organic carbon method for water
LeChevallier, M.W., N.E. Shaw, L.A. Kaplan, and T.L. Bott. 1993. Applied and Environmental Microbiology 59:1526–1531.
Sources and biogeochemistry of terrestrial dissolved organic carbon entering streams
Kaplan, L.A., and J.D. Newbold. 1993. Pages 139–165 in T.E. Ford (editor). Aquatic microbiology: an ecological approach. Blackwell Scientific Publications, Oxford, England.
Evaluation of utility laboratory personnel performance of a standardized AOC technique
Kaplan, L.A., M.W. LeChevallier, and T.L. Bott. 1992. Pages 1169–1185 in Proceedings of Water Quality Technology Conference, Orlando, Florida.
Assessment of [3H]thymidine incorporation into DNA as a method to determine bacterial productivity in streambed sediments
Kaplan, L.A., T.L. Bott, and J.K. Bielicki. 1992. Applied and Environmental Microbiology 58:3614–3621.
Comparison of high-temperature and persulfate oxidation methods for the determination of dissolved organic carbon in freshwaters
Kaplan, L.A. 1992. Limnology and Oceanography 37:1119–1125.
