Postdoctoral Position at the University of Southern California, USA

 Postdoctoral position in ocean metals ecology

The John Lab at the University of Southern California seeks a post-doctoral research associate to study the role of metals in ocean ecology. The applicant will develop large-volume trace-metal clean mesocosms. This experimental setup will allow us to explore the role of trace-metals on ocean ecology, moving beyond the ‘instantaneous’ effects measured in typical bottle incubations towards longer-term ecosystem-scale experimentation. Initial experiments will focus on the role of iron from dust in supporting nitrogen fixation in the oceans, with further experiments based on the specific skills and interests of the postdoc, and on opportunities for cross-disciplinary collaboration. Possible areas of further research include the biological cycling of trace-metal isotopes, the role of trace-metals in viral ecology, or the use of mesocosms to constrain global numerical models of metal cycling. The postdoc will have frequent opportunities for collaboration and travel through the Simons Collaboration on Ocean Processes and Ecology (SCOPE) project. Applicants should send a CV and a cover letter describing areas of research interest to Professor Seth John (

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