Graduate and Postdoc opportunities

Postdoc position –

Postdoctoral Position at the University of Arizona

We are looking for a creative post-doctoral scientist with a strong background in instrumentation, isotope biogeochemistry, and/or modeling to join an interdisciplinary “ecosystem genomics” team seeking to discover how microbial community composition and metabolism scale to the ecosystem biogeochemistry of carbon, focusing on a carbon-rich biome critical for understanding feedbacks to climate change. The position will focus on methane cycling across land use types in the Amazon of Brazil.

The candidate will manage cutting edge field instrumentation, lead interpretation of resultant data on isotopic composition of fluxes and concentrations of carbon cycle gases, and work as part of an international team studying the molecular microbial ecology of carbon cycling using multiple methods (from metagenomics of microbial communities to ecosystem fluxes). Facility with using a mathematical modeling framework to interpret field observations is desirable, as are original ideas for complementary investigations of microbial community ecology.

The position is based at University Arizona, but will involve significant time commitments at international research sites and collaborator institutions. These are exceptional opportunities to learn new techniques and to make major scientific contributions to problems of both scientific and societal interest using cutting-edge technology.

The position requires excellent communication skills and also an ability to take a leadership role for specific project components and collaborate with members of a broad international and interdisciplinary team. Fluency in (or a desire to learn) Portuguese is strongly desired. This is an interdisciplinary research program, and the candidate need not to be familiar with all of the relevant methods, but a strong science background relevant to isotope biogeochemistry, including field instrumentation, and interpretation of data within a mathematical modeling framework, is desired.

For more details, see: (Saleska research group)
Please send inquiries to Dr. Scott Saleska ( or Dr Laura Meredith ( posting number ​P20464

PhD positions – soil microbial genomics and biosphere-atmosphere trace gas exchange

The Ecosystem Genomics lab at the University of Arizona (UA) in Tucson is seeking two highly motivated PhD students to work on resolving microbial drivers of soil-atmosphere trace gas fluxes. The students will have the opportunity to work in a vibrant, interdisciplinary setting including the BIO5 institute, Biosphere 2, School of Natural Resources and the Environment, and UA’s visionary initiative in Ecosystem Genomics. Students will develop their own research projects on key trace gases and biogeochemical cycles (i.e., carbon dioxide, methane, hydrogen, carbon monoxide, carbonyl sulfide). Research foci may include linking genes to microbial trace gas production or consumption, addressing scaling challenges in the complex and heterogeneous soil system, characterizing the key biotic and abiotic controls on ecosystem trace gas fluxes, or other areas related to the applicant’s interest. For example, a student could focus on developing methods to scale from genes to ecosystem hydrogen (H2) cycling in mesocosms that would then be evaluated at the ecosystems scale in Biosphere 2 and natural systems. The students will have ample opportunity for teamwork, but will independently develop core thesis projects.

The applicant should have a minimum of a bachelor’s degree (but a master’s degree is preferred) in microbiology, biology, ecology, soil science, atmospheric sciences, atmospheric chemistry or related field. A strong background is required in either 1) instrumentation and quantitative analysis, with preference given to those with programming experience or 2) laboratory techniques in molecular biology, microbiology, or bioinformatics. The positions include a stipend (two years guaranteed based on performance), tuition waiver, and health insurance, with a projected start date of August 2019. Additional funding opportunities include teaching assistantships and graduate research assistantships.

Interested candidates should contact Laura Meredith ( and send a CV, letter of interest, research statement, and if possible a writing sample.


Fellowships are a great way to support your graduate experience!

NSF GRFP applications are due October 23, 2017, and email Laura Meredith to collaboratively prepare one. More information:

Graduate Research Fellowship Program: October Deadline