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Female scientist wearing orange jacket and blue hat smiling and standing in front of a wetland.

Ann Petersen, Ph.D.

Chief, Fisheries Ecology Branch
Ecosystems and Aquaculture
Fisheries Ecology Branch
Email: ann.petersen@noaa.gov

Ann Petersen, Ph.D.

Chief, Fisheries Ecology Branch


  • Ph.D., Integrative Physiology, Colorado University Boulder 
  • B.S., Marine Science, Eckerd College 

Professional History

Ann is a broadly-trained integrative physiologist focusing on effects of environmental endocrine disruptors on fish health. She has 20 years of experience working as an experimental biologist in academia and for state and federal agencies. Before beginning her role as branch chief, she worked with NOAA's Western Regional Office on salmonid conservation and Endangered Species Act consultations. Her research at the Northeast Fisheries Science Center’s James J. Howard Marine Sciences Laboratory looks at the effects of climate change, pollution, and habitat loss on the health of fish and fish populations. To do this she uses molecular, cellular, and organism-level experimental biology techniques. 

Before coming to NOAA Fisheries, she was a postdoctoral researcher and instructor for the Oregon University system. Her work there focused on understanding the impacts of contaminants on early development, gene expression, and reproduction in the aquatic model organisms: the stickleback and the zebrafish.