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Biogeochemistry Group

960 720 Stroud Water Research Center

The main focus of the 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.

Biogeochemistry Staff

Sara Damiano

Sara Damiano

Research Technician
Michael Gentile

Michael Gentile

Research Technician
Head shot of Diana Oviedo-Vargas, Ph.D.

Diana Oviedo-Vargas, Ph.D.

Assistant Research Scientist
Sherman Roberts

Sherman Roberts

Research Technician

Biogeochemistry News

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The delivery of dissolved organic carbon from a forested hillslope to a headwater stream in southeastern Pennsylvania, USA
Publications /
Mei, Y., G.M. Hornberger, L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2014. Water Resources Research 50(7):5774–5796 ... Read More
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Hydrologic dynamics and geochemical responses within a floodplain aquifer and hyporheic zone during Hurricane Sandy
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Sawyer, A.H., L.A. Kaplan, O. Lazareva, and H.A. Michael. 2014. Water Resources Journal 50(6):4877–4892 ... Read More
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No evidence of aquatic priming effects in hyporheic zone microcosms
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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.  ... Read More
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A variable source area for groundwater evapotranspiration: impacts on modeling stream flow
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Tsang, Y.P., G. Hornberger, L.A. KaplanJ.D. Newbold, and A.K. Aufdenkampe. 2014. Hydrological Processes 28(4):2439–2450 ... Read More
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Biological lability of dissolved organic carbon in stream water and contributing terrestrial sources
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McLaughlin, C., and L. A. Kaplan. 2013. Freshwater Science 32(4):1219–1230 ... Read More
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Measuring heterotrophic respiration rates of suspended particulate organic carbon from stream ecosystems
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Richardson, D.C., J.D. Newbold, A.K. Aufdenkampe, P.G. Taylor, L.A. Kaplan. 2013. Limnology and Oceanography Methods 11:247–261 ... Read More