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Watershed Biogeochemistry

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The effect of regional groundwater on carbon dioxide and methane emissions from a lowland rainforest stream in Costa Rica

350 210 Stroud Water Research Center

Oviedo-Vargas D., D.P. Genereux, D. Dierick, and S.F. Oberbauer. 2015. Journal of Geophysical Research: Biogeosciences 120(12):2579–2595.

Louis Kaplan working with streamwater bioreactors.

Stroud Center Scientist Takes “Rotator” Post at National Science Foundation

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Louis A. Kaplan, Ph.D., accepted a one-year appointment as a visiting scientist at the federal agency that funds innovative scientific research.

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Consumption of terrestrial dissolved organic carbon by stream microorganisms

350 210 Stroud Water Research Center

Wiegner, T.N., L.A. Kaplan, S.E. Ziegler, R.H. Findlay. 2015. Aquatic Microbial Ecology 75:225–237.

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Longitudinal shifts in dissolved organic matter chemogeography and chemodiversity within headwater streams: a river continuum reprise

350 210 Stroud Water Research Center

Mosher, J.J., L.A. Kaplan, D.C. Podgorski, A.M. McKenna, and A.G. Marshall. 2015. Biogeochemistry 124(1–3):371–385.

MRI: Acquisition of a High-Sensitivity Light Stable Isotope Mass Spectrometer for Critical Zone Studies

800 532 Stroud Water Research Center

This grant supports the acquisition of a high-sensitivity stable isotope ratio mass spectrometer (IRMS) at Stroud Water Research Center, which will provide enhanced capabilities and greater sensitivity analyses than currently…

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The role of dissolved organic nitrogen in a nitrate-rich agricultural stream

350 210 Stroud Water Research Center

Oviedo-Vargas D., and T.V. Royer. 2015. Journal of Environmental Quality 44(2):668–675.

A stream cascade in Lofty Creek, Pennsylvania.

Collaborative Research: Coupled Geochemical and Geobiological Characterization of Dissolved Organic Matter Oxidation to Carbon

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As microbes process dissolved organic matter from leaves that fall into streams, they release CO2 into the atmosphere. Scientists are studying stream networks from two different climatic regions to identify…

Christina River Basin Critical Zone Observatory (CRB-CZO): Quantifying Carbon Sequestration Resulting From Human-Induced Erosion

800 532 Stroud Water Research Center

In collaboration with the University of Delaware, Stroud Center scientists established one of 10 Critical Zone Observatories in the U.S. and began to establish the sampling, sensor, and data infrastructures…

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Evaluation of passive samplers for the collection of dissolved organic matter in streams

350 210 Stroud Water Research Center

Warner D., D. Oviedo-Vargas, and T.V. Royer. 2015. Environmental Monitoring and Assessment 187(1):1–9.

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Coupled geochemical and biogeochemical characterization of dissolved organic matter from a headwater stream

350 210 Stroud Water Research Center

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.