Project: Organic Matter Mineralization and Metal Cycling During Flood Plain 
Evolution 

We are inviting applications for a fully funded PhD positions in the Soil and 
Microbial 
Biogeochemistry group at the University of Massachusetts—Amherst. 

Research: The successful candidate will conduct research into the metabolic 
constraints on the 
biogeochemical cycling of organic matter within floodplains. The overarching 
goal of this research is 
to decipher the coevolution of organic carbon and metal chemistry within 
floodplains, and its 
resulting determinant of carbon oxidation rates and metal contaminant fate and 
transport. This 
research is focused on the Colorado and associated River basins where a legacy 
of mining has left 
floodplain aquifers contaminated with uranium and other metals. The candidates 
will combine 
experiments in laboratories with field sampling and long-term monitoring to 
examine the key 
microbial processes responsible for the cycling of carbon and associated 
metals. Candidates will 
have the excellent opportunity to apply cutting-edge synchrotron-based 
spectroscopy/microscopy, 
mass spectrometry, and molecular biology techniques to study the microbial 
transformations of 
carbon and metals. This research will be conducted in collaboration with a 
supportive team of 
scientists at UMass-Amherst, Stanford University, and Pacific Northwest 
National Laboratory.  
 
Qualifications: Applicants with Bachelor degree in soil science or a related 
field (environmental 
science, geoscience, microbiology, or environmental chemistry) are encouraged 
to apply. We expect 
the student to have a general interest in fundamental biogeochemical mechanisms 
in soils, and to 
creatively integrate his or her own ideas within the broader framework of the 
project.

Location: UMass Amherst, the flagship campus of the University of Massachusetts 
system, sits on 
nearly 1,450-acres in the scenic Pioneer Valley of Western Massachusetts, 90 
miles from Boston and 
175 miles from New York City. The campus provides a rich cultural environment 
in a rural setting 
close to major urban centers.  

Application: Interested candidates are asked to send their CV, copies of 
Bachelor and/or Master 
degrees (including academic transcripts), and a list of two potential 
references (including full contact 
addresses). These materials, and inquiries for further information, should be 
sent to Dr. Marco 
Keiluweit ([email protected]) by July 15, 2016, or until the position is 
filled.  The start date is 
negotiable, but ideally Sept 2016 or Jan 2017.  

Marco Keiluweit
Assistant Professor
Soil and Microbial Biogeochemistry

University of Massachusetts—Amherst
161 Holdsworth Way, Amherst, MA 01003
Email: [email protected]
Phone: +1 413-545-6798
Paige Laboratory 411 (office) and 401/408 (lab)

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