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Watershed Biogeochemistry Group

960 720 Stroud Water Research Center

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

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

Watershed Biogeochemistry News

PFAS movement from points of use to farms and water.
Use Of Biosolids as Soil Amendments May Be a Pathway for PFAS Contamination of Soil, Water, and Ultimately, Our Food
To help understand the extent of this problem in Pennsylvania, scientists are looking at the occurrence and migration of biosolid-derived PFASs into soil and water on agricultural fields.
Publication title with image of a mayfly
Elucidating stream bacteria utilizing terrestrial dissolved organic matter
Akinwole, P., L. Kaplan, and R. Findlay. 2021. World Journal of Microbiology and Biotechnology 37, article 32.
Diana Oviedo-Vargas downloading data from a sensor located in White Clay Creek to a field laptop.
Oviedo-Vargas Shares Her STEM Career Journey
The Stroud Center biogeochemist was featured in a women-in-STEM webinar series hosted by EarthEcho International.
Publication title with image of a mayfly
Effect of decreasing biological lability on dissolved organic matter dynamics in streams
Li, A., J.D. Drummond, J.C. Bowen, R.M. Cory, L.A. Kaplan, and A.I. Packman. 2020. Water Resources Research 57(2): e2020WR027918.
Photo of a farm with a large muddy area with cattle.
A Small Farm Offers Big Opportunities for Measuring Watershed Restoration Success
Stream restorations rarely get monitored rigorously enough to determine if the “patient” has fully recovered.
Aerial photographs of a recovering forest along White Clay Creek in Pennsylvania.
Patience is the Mother of Science: Long-Term Responses of a Stream to Reforestation
We're studying how White Clay Creek can recover from deforestation and agricultural expansion and to what extent restoration practices can acclerate that recovery.