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Organic and Isotope Geochemistry

2016 Stroud Center interns.

Welcome Summer Interns!

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Stroud Center’s internship program, now in its 44th year, has ushered through hundreds of interns who have come in search of meaningful work.

Publication title with image of a mayfly

Seasonal dynamics of the soil microbial community structure within the proximal area of tree boles: possible influence of stemflow

 350 210 Stroud Water Research Center

Rosier, C.L., D.F. Levia, J.T. Van Stan, A.K. Aufdenkampe, and J. Kan. 2016. European Journal of Soil Biology 73:108–118.

A stream cascade in Lofty Creek, Pennsylvania.

The geochemical transformation of soils by agriculture and its dependence on soil erosion: an application of the geochemical mass balance approach

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Yoo, K., B. Fisher, J. Ji, A. Aufdenkampe, and J. Klaminder. 2015. Science of the Total Environment 521:326–335.

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

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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…

Collaborative CZO Research: The Role of Metals in Nitrogen Cycling of Soils and Streams

 800 532 Stroud Water Research Center

A collaboration with researchers at Princeton University will leverage the exceptional sensor and geochemistry data from our Critical Zone Observatory project developed by Stroud Water Research Center scientists to explore…

Earthworm Invasion: Investigating Changes in Soil Chemistry and Carbon Sequestration

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Human activities over the last 100 years have introduced exotic earthworms into many pristine northern forests. These earthworm invasions are moving north at 15-30 feet per year, bringing with them…

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…

A stream cascade in Lofty Creek, Pennsylvania.

Impact of exotic earthworms on organic carbon sorption on mineral surfaces and soil carbon inventories in a northern hardwood forest

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Lyttle, A., K. Yoo, C. Hale, A.K. Aufdenkampe, S.D. Sebestyen, K. Resner, and A. Blum. 2015. Ecosystems 18(1):16–29.

A stream cascade in Lofty Creek, Pennsylvania.

Invasive earthworms deplete key soil inorganic nutrients (Ca, Mg, K, and P) in a northern hardwood forest

 1024 681 Stroud Water Research Center

Resner, K., K. Yoo, C. Hale, A.K. Aufdenkampe, S.D. Sebestyen, A. Lyttle, and A. Blum. 2015. Ecosystems 18(1):89–102.

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The delivery of dissolved organic carbon from a forested hillslope to a headwater stream in southeastern Pennsylvania, USA

 350 210 Stroud Water Research Center

Mei, Y., G.M. Hornberger, L.A. Kaplan, J.D. Newbold, and A.K. Aufdenkampe. 2014. Water Resources Research 50(7):5774–5796.