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Watershed Biogeochemistry

Research technicians weigh, identify, and record fish and amphibians sampled during a stream survey.

National Park Service Taps Stroud Center Team to Review Water Quality Data

800 450 Stroud Water Research Center

“We are really leaning on Stroud to provide the aquatic ecology piece, to help us put data into context and advance our understanding of watershed health.”

Four scientists collect simulated rainfall from soil in a cornfield in White Clay Creek watershed.

Saving Streams With Good Science

800 450 Stroud Water Research Center

Building trust in the scientific process starts with communicating our research to non-scientists. To that end, our scientists share snapshots of three long-term experiments.

2021 entomology summer intern group photo.

Meet Our 2021 Summer Interns

800 450 Stroud Water Research Center

Our summer internship program, now in its 49th year, has ushered through hundreds of interns seeking meaningful learning experiences.

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

800 450 Stroud Water Research Center

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

350 210 Stroud Water Research Center

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

800 450 Stroud Water Research Center

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

350 210 Stroud Water Research Center

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

800 450 Stroud Water Research Center

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

1000 724 Stroud Water Research Center

We’re studying how White Clay Creek can recover from deforestation and agricultural expansion and to what extent restoration practices can acclerate that recovery.

Diana Oviedo Vargas and Melinda Daniels in a Costa Rican forest.

Stream Reach: Building Communities from White Clay Creek to the Yangtze Basin

800 450 Stroud Water Research Center

To truly make a difference requires, not only understanding freshwater systems, but working with all kinds of communities to protect them.