Our research sits at the interface of microbial ecology, biogeochemistry, and global change science.  We focus on the responses of microbial communities, and the processes mediated by these communities, to environmental change—including climate change, ocean acidification, ocean deoxygenation, and atmospheric nitrogen deposition.  Our research combines molecular techniques with biogeochemical approaches to understand the interplay between microbial community structure and function.  We work in the open ocean, reefs, estuaries, marine lakes and mountain lakes, are constantly exploring new ideas, and are continually developing new projects and collaborations.  Feel free to contact us.  Our current major projects examine:

::Microbial community ecology and biogeochemical cycling in marine lakes of Palau

::Nitrogen cycling, microbial community ecology, and ocean deoxygenation in the Gulf of California and eastern tropical North Pacific Ocean

::Alteration of nitrogen cycling in the sea due to ocean acidification

::Microbial ecology and nitrogen and carbon cycling in Yosemite’s lakes

::Microbial ecosystem services