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Graduate Assistantship in Stream Biofilm Ecology

Expiration Date: 

The Costello Biogeochemistry Lab at Kent State University ( is recruiting at least 1 PhD student in Fall 2021 to study nutrient and trace metal limitation of stream biofilms. Three years of NSF-funded CAREER grant support is available with additional support for at least 1 additional year through the Department of Biological Sciences as a TA (12 month support). The PhD student will join a vibrant community of aquatic researchers at KSU and work with a team of collaborators at institutions within the Great Lakes region.


This NSF-funded project will explore the prevalence, cause, and consequence of trace metal-nutrient co-limitation of algal biofilms in streams throughout the Great Lakes region. The project uses a combination of field sampling and experimentation from the patch to whole-stream scale to explore micronutrients as drivers of algal metabolism and growth. Ample flexibility will provide a PhD student freedom to develop independent research projects.


I encourage applicants from historically excluded and underrepresented groups in science as well as scientists with interests in advancing diversity, equity, and inclusion in aquatic sciences. The project also includes opportunities to engage first-generation and low-income undergraduate and high school students through the KSU Upward Bound program.


Prior undergraduate and/or masters level independent research experience is required and experience with ecosystem ecology or biogeochemistry is preferred. If interested in this position, please contact David Costello directly ( and provide a CV or resume and a cover letter that briefly describes your background, expertise, and research interests. An official application must be submitted through KSU Admissions, and the admission deadline for Fall 2021 is Dec. 15 (Dec. 5 for international students).