Physiology and Rates in Microbial Oceanography (PRIMO)

Erin Bertrand applies proteomic and metabolomic approaches in the field and the lab to understand marine microbial physiology and biogeochemistry. She has experience using cellular models and proteomics to estimate rates from omic data and is currently working to identify physiological rates that can be estimated directly from quantitative proteomic measurements.

Federiko Baltar studies the role of microbes (fungi and prokaryotes) on marine elemental cycles, the influence of mesoscale features on microbial functioning and diversity, and the anthropogenic impact on marine microbes and organic matter cycling. He combines physiological rate measurements and

molecular tools with modern -omics approaches on natural communities and cultured isolates.

Aditee Mitra holds expertise in system dynamics modeling to integrate eco-physiological data into plankton food-web models for in silico investigations. Over the last few years, her research has focused

primarily on the mixoplankton paradigm.

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Susanne Wilkin focuses on mixotrophic protists to assess their quantitative contribution to ecosystem processes including primary production and bacterivory, as well as the balance of auto- versus heterotrophy in individual lineages. She uses stable isotope probing approaches (RNA-SIP) in the field, physiological assays and transcriptomics in the lab, and is planning to combine those with meta-omics in the future.

Robert Strzepek combines classic physiological tools and (meta-)proteomics in the laboratory and field to better understand the physiological ecology of marine phytoplankton and the impact they have on marine biogeochemical cycles, particularly of bioactive metals.

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Rachel Foster holds expertise in microbial oceanography with an emphasis on microbial interactions between nitrogen fixing microbes and photosynthetic eukaryotic hosts (e.g., symbioses, consortia). She works in the development of single cell methodologies that couple physiology with rate measurements (e.g. Mass Spectrometry Imaging), microscopy, genome content, and gene expression, so that phenotype and activity can be matched to specific cells.

Thomas Ryan-Keogh works on the development and application of physiological and primary production algorithms on bio-optical data collected in the Southern Ocean to understand seasonal variability and long-term changes. His more recent projects include the applications of these algorithms on a global scale.

Cecilia Alonso specializes in environmental microbiology, molecular microbial ecology, and bacterial expertise.

Shady Amin uses multi-omics techniques to study the role microbes play in global biogeochemical cycles with a strong emphasis on symbiotic interactions between phytoplankton and bacteria at the microscale and how they influence large-scale phenomena. He is currently developing techniques in metagenomics and metabolomics at the single-cell level to understand these relationships in the ocean.

Naomi Levine is developing interdisciplinary numerical models that allow us to understand how dynamics occurring at the scale of individual microbes impact large-scale ecosystem processes such as

rates of global carbon cycling. Ultimately, these models seek to incorporate -omic information and trade-offs that individual cells make to predict large-scale biogeochemical rates.

Koji Suzuki studies phytoplankton and diazotrophs in the North Pacific through GEOTRACES-relevant field campaigns and ship-of-opportunity observations between Japan and North America using metabarcoding, metatranscriptome, UHPLC algal pigment, and stable isotope (13C and 15N) labeling techniques.