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
Stable isotope and conservative tracer data used to estimate uptake of stream water dissolved organic carbon (DOC) through a whole-stream addition of a 13C-DOC tracer coupled with laboratory measurements of bioavailability of the tracer and stream water DOC using lability profiling with bioreactors
Kaplan, L.A., J.D. Newbold, T.N. Wiegner, and M.H. Ostrom. 2019. Environmental Data Initiative.
Eco-friendly organic nanotubes encapsulating alkaline phosphatase and ecotoxicology of nanotubes to natural bacterial assemblages in coastal estuarine waters
Montgomery, M.T., G.E. Collins, T.J. Boyd, C.L. Osburn, D. Oviedo-Vargas, and Q. Lu. 2019. American Chemical Society Omega 4(1):2196–2205.
Seasonal trends in surface pCO2 and air‐sea CO2 fluxes in Apalachicola Bay, Florida, from VIIRS ocean color
Joshi, I. D., N.D. Ward, E.J. D’Sa, C.L. Osburn, T.S. Bianchi, and D. Oviedo‐Vargas. 2018. Journal of Geophysical Research: Biogeosciences 123:2466–2484.
Meet Our 2018 Summer Interns!
The internship experience allows undergraduates to see if they have the passion and fortitude necessary to meet the challenges of a research career.
Impacts of hydrous manganese oxide on the retention and lability of dissolved organic matter
Stuckey, J.W., C. Goodwin, J. Wang, L.A. Kaplan, P. Vidal-Esquivel, T.P. Beebe Jr., and D.L. Sparks. 2018. Geochemical Transactions 19:6.
Meet Our New Scientist: Diana Oviedo-Vargas
Diana Oviedo-Vargas, Ph.D., grew up in a rural town in Costa Rica and was drawn to the Stroud Center because of its long-term research in Costa Rica.
