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


News

FEATURED NATIONALLY

Water Resources Research Special Collection: Concentration-discharge relations in the critical zone

30 Oct 2017 - Water Resources Research published a new special collection in September 2017 featuring concentration-discharge research from multiple CZOs.

FEATURED

82nd Annual Field Conference of PA Geologists tour the CZO

05 Oct 2017 - Just under 250 geologists from across the state of Pennsylvania spent three days (Oct 5-7) exploring outcrops and research sites in Blair, Centre...

FEATURED

2017 CZO Webinar Series: Critical Zone and Society

06 Apr 2017 - 2017 CZO Webinar Series: Critical Zone and Society.


Shale Hills hosts eight-member delegation from China

09 Sep 2016 - To further their knowledge in critical zone research, a delegation of geologists from the China Geological Survey (CGS) and students from the China...

Math Modeling Workshop participants tour the CZO

04 Aug 2016 - A cohort of twenty international graduate students, postdoctoral scholars, and early career faculty spent five days at Penn State for an intense,...

Using a CZO network to explore the architecture, dynamics and evolution of the Critical Zone

03 Nov 2014 - The US CZO National Office has organized a webinar on December 8, 2014 at 11AM - 12:30 PM ET.

“What’s so critical about the Critical Zone?” webinar

02 Apr 2014 - March 31, 2014. Dr. Enriqueta Barrera (NSF CZO program director) and Dr. Gordon Grant (USFS; CZO Steering Committee chairperson)

CZ-tope: Using multiple isotopes to understand watersheds

08 Aug 2013 - We would like to introduce CZ-tope, an international effort the Susquehanna Shale Hills Critical Zone Observatory is initiating to promote isotopic...

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