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
Longitudinal shifts in dissolved organic matter chemogeography and chemodiversity within headwater streams: a river continuum reprise
Mosher, J.J., L.A. Kaplan, D.C. Podgorski, A.M. McKenna, and A.G. Marshall. 2015. Biogeochemistry 124(1–3):371–385.
Coupled geochemical and biogeochemical characterization of dissolved organic matter from a headwater stream
Sleighter, R.L., R.M. Cory, L.A. Kaplan, H.A.N. Abdulla, and P.G. Hatcher. 2014. Journal of Geophysical Research: Biogeochemistry 119(8):1520–1537.
The delivery of dissolved organic carbon from a forested hillslope to a headwater stream in southeastern Pennsylvania, USA
Mei, Y., G.M. Hornberger, L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2014. Water Resources Research 50(7):5774–5796.
Hydrologic dynamics and geochemical responses within a floodplain aquifer and hyporheic zone during Hurricane Sandy
Sawyer, A.H., L.A. Kaplan, O. Lazareva, and H.A. Michael. 2014. Water Resources Journal 50(6):4877–4892.
No evidence of aquatic priming effects in hyporheic zone microcosms
Bengtsson, M.M., K. Wagner, N.R. Burns, E.R. Herberg, W. Wanek, L.A. Kaplan, and T.J. Battin. 2014. Scientific Reports 4, Article number: 5187.
A variable source area for groundwater evapotranspiration: impacts on modeling stream flow
Tsang, Y.P., G. Hornberger, L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2014. Hydrological Processes 28(4):2439–2450.
