Postdoctoral Researcher on « Microbial biology and geochemical processes
of contrasting ecosystems: from desert to tropics » at the School of Life
Sciences (SOLS) and the School of Earth and Space Exploration (SESE),
Arizona State University, Tempe, AZ

A collaborative postdoctoral position on “microbial biology and geochemical
processes in contrasting ecosystems » is available jointly at the School of Life
Sciences (SOLS) and School of Earth and Space Exploration (SESE) at Arizona
State University (ASU).

The relationship between microbial communities’ activities and their effects or
signatures ranging from ecosystem-scale to planetary-scale, is a key study
subject to account for global carbon budgets on earth or for potential
biosignatures on the ever increasing number of confirmed extrasolar planets. In
this project, we aim to identify emergent properties of microbial physiology and
ecosystem functioning in contrasting geochemical and energetic contexts as
provided by (i) dry, oligotrophic desert environments and (ii) water-saturated,
highly organic carbon-rich Amazon peatlands. This project is highly
interdisciplinary and our questions and activities aim to address such topics as:
soil geochemical measurements of rates of biotic and abiotic processes;
development of isotopic measurements including natural abundance and/or
tracer-enrichment experiments with ecologically important gases (i.e., O2, CO2,
CH4, N2O and others); microbial physiology assessments in situ and in vitro
through imaging coupled with metagenomics and metaproteomics approaches;
and energetic/functional microbial activity modeling. The research requires
fieldwork involving expeditions to remote locations (deserts and tropics in South
America) followed by complementary laboratory activities. The Postdoctoral
Researcher will work in close collaboration with two PI’s, two graduate students,
and undergraduate researchers.

This position is under the supervision of Prof. Hinsby Cadillo-Quiroz (carbon
degradation and microbial biology, and Prof Hilairy
Harnett (geochemistry of soils, isotopic biology and astrobiology, The selected candidate will
join a collaborative effort between SOLS and SESE faculty. Desert geochemistry
and microbial respiration at low energy availability is part of the current effort by
the Life Processes research team in the ASU Nexus for Exoplanet System
Science project (, while Amazon peatlands geochemistry
and microbial functional groups is part of efforts JGI-CSP and Ecosystem
Science of Amazon Peatlands project. The postdoctoral researcher will catalyze
common areas of research connecting these two efforts in an innovative and
integrative fashion.

Applicants must have a PhD in relevant areas (Environmental Sciences,
Astrobiology, Microbiology, Geochemistry, and others). Candidates with strong
expertise in biogeochemistry, microbial ecophysiology, -omics studies or a
combination will be preferred.

Strong candidates will also possess: (i) significant publication record (papers
published, in press, or submitted), (ii) creativity, independence, and the desire to
learn, (iii) proficiency in both written and spoken English, as well as (iv) analytical,
interpersonal, and presentation skills. Position is available in an annual basis,
renewable upon satisfactory performance. Competitive salary and benefits are
available. Application should include: (i) a brief cover letter, (ii) Curriculum Vitae
including three professional references, (iii) a brief description of past research
accomplishments and future research goals. Send application to the following
email: [email protected]

The early revision of applications starts on June 15th 2016; applications will
be reviewed weekly thereafter until the search is closed. Starting date is
flexible but mid August 2016 is desirable.

A background check is required for employment. Arizona State University is an
equal opportunity/affirmative action employer committed to excellence through
diversity. Women and minorities are encouraged to apply. For additional
information on this position and the School of Life Sciences, please visit

Le contenu de cette offre est la responsabilité de ses auteurs. Pour toute question relative à cette offre en particulier (date, lieu, mode de candidature, etc.), merci de les contacter directement.

Pout toute autre question, vous pouvez contacter [email protected].