[ES_JOBS_NET] Postdoc in soil C cycle at LLNL

Erika Marín-Spiotta marinspiotta at wisc.edu
Fri Jul 22 19:33:49 MDT 2016

Postdoctoral Research Staff Member
*Location: *Livermore, CA
*Category: *Post Docs
*Organization: *Physical and Life Sciences
*Posting Requirement: *External Posting
*Job ID: *101044
*Job Code: *Post-Dr Research Staff 1 (PDS.1)
*Date Posted: *May 20 2016

Dr. Karis McFarlane is looking for a postdoc to work at Lawrence Livermore
National Laboratory’s Center for Accelerator Mass Spectrometry to research
terrestrial carbon cycling, with a focus on belowground biogeochemistry
using radiocarbon and stable isotopes. The project is aimed at constraining
turnover times (residence/transit times) for belowground carbon stored in
tropical forests across a gradient of moisture regimes from wetlands to
seasonally dry forest. This will be done using a combination of using
ecosystem/soil carbon and radiocarbon measurements (soil organic matter,
dissolved organic carbon, roots, and CO2 and CH4 emissions) and modeling
with soil, ecosystems, and land surface models (CLM and ACME-Land Model).
This project includes several research sites in Puerto Rico, Costa Rica,
Panama, and Mexico and includes collaboration with DOE’s Next Generation
Ecosystem Experiment in the Tropics.

More details on the position, requirements, qualifications, and
instructions for applying can be found here:

If you know of a potentially interested candidate, please have them contact
Karis at kjmcfarlane at llnl.gov for more information about this research
project, CAMS, and LLNL.

*Science and Technology on a Mission!*

For more than 60 years, the Lawrence Livermore National Laboratory (LLNL)
has applied science and technology to make the world a safer place.

We have an opening for a Postdoctoral Researcher to apply radiocarbon
analytical methods to terrestrial carbon cycle science. You will
participate, collaborate scientifically, and potentially take the lead in
one or more of our major program areas, which will include travel to
domestic and international field sites. This position is in the Center for
Accelerator Mass Spectrometry.

*Essential Duties*
- Conduct original and independent research as part of a multi-disciplinary
team, collaborate in technique development and sample analysis in
experimental programs to study terrestrial carbon cycling.
- Assist in the flow of natural 14C samples through the CAMS laboratory,
and participate in technique development, AMS operation, and data analysis
as part of the overall activity of the natural-radiocarbon research group.
- Develop and potentially lead a program in one or more of the following
areas: the origin, transport, stabilization, and transit time of soil
organic matter (SOM); quantification of components and carbon sources of
soil respiration and methane emissions; fine root turnover and rhizosphere
dynamics; the roles of microbes in carbon transport and sequestration;
scaling carbon cycle processes from ecosystem- to regional-scales; and data
synthesis and modeling.
- Publish results in peer reviewed literature and present research at
professional meetings.
- Collaborate in overall research and measurement programs of the
geosciences radiocarbon research group.
- Conduct fieldwork and travel to field sites.
- Perform other duties as assigned.

- Recent PhD in biogeochemistry, ecology, soil science, or a related field.
- Research experience in terrestrial carbon cycling.
- Demonstrated quantitative understanding and interpretation of ¿13C and/or¿
14C analyses in terrestrial carbon cycle studies with a focus on
belowground processes and terrestrial ecosystems.
- Demonstrated ability to perform soil carbon fieldwork (e.g., soil, root,
or soil water sampling; CO2 or CH4 flux measurements).
- Demonstrated ability to publish research results in peer-reviewed
literature, produce programmatic reports, and present research results to a
large audience.
- Demonstrated fundamental verbal and written communication skills
necessary to deliver presentations and prepare written reports.
- Demonstrated ability to work effectively in a multi-institutional,
multi-disciplinary research environment, both independently and as a team
- Demonstrated ability to work on multi-institutional collaborative

*Pre-Employment Drug Test:*  External applicant(s) selected for this
position will be required to pass a post-offer, pre-employment drug test.

*Anticipated Clearance Level: * None.

*Note: *  This is a two-year Postdoctoral appointment with the possibility
of extension to a maximum of three years.  Eligible candidates are recent
PhDs within five years of the month of the degree award at time of hire

*About Us*

Lawrence Livermore National Laboratory (LLNL), located in the San Francisco
Bay Area (East Bay), is a premier applied science laboratory that is part
of the National Nuclear Security Administration (NNSA) within the
Department of Energy (DOE).  LLNL's mission is strengthening national
security by developing and applying cutting-edge science, technology, and
engineering that respond with vision, quality, integrity, and technical
excellence to scientific issues of national importance.  The Laboratory has
a current annual budget of about $1.5 billion, employing approximately
6,000 employees.

LLNL is an affirmative action/ equal opportunity employer. All qualified
applicants will receive consideration for employment without regard to
race, color, religion, marital status, national origin, ancestry, sex,
sexual orientation, gender identity, disability, medical condition,
protected veteran status, age, citizenship, or any other characteristic
protected by law.
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