Research Community

PSU Geosciences grad students Beth Herndon and Ashlee Dere work with Princeton geochemist Anne Krapiel (photo) to sample and analyze the chemistry of vegetation samples that are being archived for later sharing. Krapiel’s work, funded by NSF, targets analysis of Mo and V usage in enzymes in the watershed.

A variety of collaborative efforts are underway at SSHCZO including researchers affiliated with the Shale Transect satellite sites as well as colleagues from other institutions not directly affiliated with SSHCZO. A summary of some of the colleagues and their research is listed in the table below. Detailed descriptions of two collaborative research efforts are described here, including phenological research using a high resolution camera and work on nitrogen cycling.

^--ongoing research, *--shale transect satellite team member
Name Institution Research
Mezimir Wagaw^* Alabama A&M Univ. Soil on shale in Alabama
Rob Jacob^ Bucknell Univ. Gravity measurements
Brian Reynolds^* CEH, Wales Soil on shale in Wales
Rich April^* Colgate Univ. Soil development on shale till
Jed Sparks^ Cornell Univ. Sr and Si cycling
Lou Derry^ Cornell Univ. Sr and Si cycling
Andrew Richardson^ Harvard Univ. Phenocam
Ryan Mathur^* Juniata College Soil on Marcellus shale
Taylor Perron^ MIT Fractures, fluid flow and topography
Anne Krapiel^ Princeton Univ. Mo cycling
Karen Salvage SUNY Binghamton Hydrogeological modeling
Laura Toran Temple Univ. Hydrogeophysics
Fangzhen Teng^ Univ. of Arkansas Mg isotopes at Shale Hills
Diana Karwan^ Univ. of Delaware sediment transport, Cs and Pb isotopes
Tom Johnson^* Univ. of Puerto Rico Soil development on shale
Chris Fedo^* Univ. of Tennessee Soil on shale in Tennessee
Paul Biermann^  Univ of Vermont Cosmogenic isotopes
Lin Ma^ Univ. of Texas, El Paso REE in shale transect sites
Lixin Jin^ Univ. of Texas, El Paso C isotopes at Shale Hills
David Woodruff^ USDA-Forest Service Sap flux and tree water relations
Frederick Meinzer^ USDA-Forest Service Sap flux and tree water relations
Elisabeth Knapp^* Washington & Lee Univ. Soil on shale in Virginia
Beth Boyer^ Penn State Univ. DOC, precipitation monitoring
Mary Ann Bruns^ Penn State Univ. Soil microbiology
Rudy Slingerland Penn State Univ. Sediment transport, tree throw
Maureen Feinmann^ Penn State Univ. Li isotopes at Shale Hills
Matt Fantle^ Penn State Univ. Ca isotopes at Shale Hills
Margot Kaye^ Penn State Univ. Assessment of litterfall
David Pollard^  Penn State Univ. Climate modeling for transect
Tim White Penn State Univ. Transect

 

Phenology 

Dr. Andrew Richardson (Harvard University) has recently provided a high resolution video camera (StarDot NetCam SC Megapixel Hybrid IP Camera) that we have mounted at the eddy flux tower at the Shale Hills CZO. This camera monitors changes in phenology (e.g. leaf emergence and fall leaf senescence) and snow cover with greater temporal resolution than is logistically feasible for individual observers. This camera also helps support a PSU student-initiated project to monitor phenology in central PA (PennPhen, www.sites.google.com/site/psuphenology), contributes data to a larger network of camera based phenology observations (http://phenocam.sr.unh.edu/), and provides data that supports ongoing projects at the CZO.

Nitrogen fixation

Dr. Anne Kraepiel from Princeton University has been using the Shale Hills watershed to work on the NSF-funded project, “Acquisition of nitrogenase metal cofactors in soils: role of metallophores and limitation of N2-fixation.” In September 2011 and July 2012, Anne traveled to SSHO to conduct experiments with co-PI Sue Brantley and graduate student Ashlee Dere.  Organic layer samples were collected at three valley floor sites within the watershed and incubated in the laboratory to determine nitrogen fixation rates and mechanisms in the watershed. Nitrogen fixation activity was determined by incubating the samples with acetylene for 8 hrs and measuring the production of ethylene over time using the GC at Princeton University.  Preliminary results suggest that nitrogen fixation rates are not measurable in the fall and low in the summer months. The experiment will be repeated in July 2013 at SSHO CZO and at the Christina River Basin CZO.

Samples were collected at three valley floor sites within the watershed and incubated in the laboratory to determine nitrogen fixation rates.

  

Nitrogen fixation activity was determined by incubating the samples with acetylene for 8 hrs and measuring the production of ethylene over time using the GC at Princeton University.

Samples were collected at three valley floor sites within the watershed and incubated in the laboratory to determine nitrogen fixation rates.

Nitrogen fixation activity was determined by incubating the samples with acetylene for 8 hrs and measuring the production of ethylene over time using the GC at Princeton University.


Associated Files



Events

Chinese delegation from China Geological Survey to visit CZO

Delegation to visit multiple CZOs to learn infrastructure and coordination efforts of US Obseratories


Penn State and the CZO.

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