[ES_JOBS_NET] 2 postdoc positions in rhizosphere biogeochemistry at UMass Amherst (Marco Keiluweit)

[Marco Keiluweit]

We are hoping to fill two postdoc positions in rhizosphere biogeochemistry at the University of Massachusetts Amherst.  Details below.

1) Rhizosphere biogeochemistry of mineral-associated organic nitrogen (24-month postdoc position)
A 2-year postdoctoral position in rhizosphere biogeochemistry is available at UMass Amherst.  The successful candidate will be supervised by Drs. Rachel Hestrin and Marco Keiluweit (UMass Amherst), and will work in close collaboration with Drs. Andrea Jilling (Oklahoma State Univ.) and Stuart Grandy (Univ. of New Hampshire).  The main objective of this NSF-funded project is to determine the fate of mineral-associated organic nitrogen in the rhizosphere.  The candidate will conduct experiments on whole plant-soil systems and employ a suite of advanced isotope, spectroscopic/microscopic and mass spectrometric techniques.  The results will be used to build a mechanistic understanding of plant-mediated and edaphic controls of mineral-associated organic nitrogen.  Candidates with a strong background in soil science, biogeochemistry, or microbial ecology will be given preference.   Inquires as well as complete applications - including a CV, a list of 3 references, and a letter expressing your expertise and fit for the position - should be sent to Marco Keiluweit (keiluweit(at)umass.edu<http://umass.edu>). Applications will be reviewed starting on Jan 17 until the position is filled.

2) Rhizosphere biogeochemistry and long-term soil warming (18-month postdoc position, extension possible)
A 18-month postdoctoral position in rhizosphere biogeochemistry is available at UMass Amherst.  The candidate will work under the supervision of Drs. Marco Keiluweit (UMass Amherst), Margaret Torn, and Peter Nico (Lawrence Berkeley National Laboratory) within the framework of LBNL’s Long-term Soil Warming Scientific Focus Area (SFA).  The main objective of this DOE-funded project is to determine the spatiotemporal variability in rhizodeposition and its biogeochemical impact in coastal California grassland subjected to long-term warming (Point Reyes, CA). The candidate will be tasked with in-field experiments using in-situ microsensors and employ advanced spectroscopic and mass spectrometric analyses for the characterization of rhizodeposits.  The candidate will develop and prototype analytical approaches at UMass Amherst but will largely be based at the Lawrence Berkeley National Laboratory as a full member of the SFA team. The results will be used to build a mechanistic understanding of the interplay among rhizodeposition, moisture, and redox within soils and their response to soil warming.  Candidates with a strong background in soil chemistry, geochemistry, or analytical chemistry will be given preference.  Inquires as well as complete applications - including a CV, a list of 3 references, and a letter expressing your expertise and fit for the position - should be sent to Marco Keiluweit (keiluweit(at)umass.edu<http://umass.edu>).  Applications will be reviewed starting on Jan 17 until the position is filled.

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