Erin Bertrand is an Assistant Professor and NSERC Tier II Canada Research Chair in Marine Microbial Proteomics in the Biology Department at Dalhousie University, Halifax, Nova Scotia. Erin received a B.S. with honors in Chemistry and Environmental Studies from Bates College in 2005. She went on to complete her Ph.D. in Chemical Oceanography in the MIT/WHOI Joint Program, where she was awarded the Fye Award for Excellence in Chemical Oceanography research, 2010–2015. From 2012 to 2015, Erin was a U.S. National Science Foundation Office of Polar Programs Postdoctoral Fellow at the J. Craig Venter Institute and Scripps Institution of Oceanography. Her research aims are focused on understanding how microbes influence ocean biogeochemistry. She is particularly interested in the molecular basis of microbial micronutritional requirements and what the consequences of those requirements are for global carbon, nitrogen and sulfur cycling. Her group employs a range of quantitative mass spectrometry–based techniques, paired with field and laboratory experiments, to ask these questions.