Prior to coming to UNH Dr. Rosenberg was the Deputy Director of NOAA's National Marine Fisheries Service from 1998-2000, the senior career position in the agency. As Deputy Director he dealt with policy decisions on science and resource management issues nationwide as well as the administration of the agency. He was a principle agency spokesperson before Congress, the public, and technical audiences. Before becoming NMFS Deputy Director, Dr. Rosenberg was the NMFS Northeast Regional Administrator. He negotiated and implemented the recovery program for New England fisheries, reversing overfishing and resource declines on George's Bank as well as other areas for groundfish and scallop fisheries. He worked to develop and implement marine mammal recovery programs and endangered species protections throughout the northeast. Dr. Rosenberg served as the U.S. representative in several international fishery management organizations including NAFO, NASCO and on the delegation to FAO and other UN meetings.

Dr. Rosenberg's scientific work is in the field of population dynamics, resource assessment and resource management policy. He holds a B.S. in Fisheries Biology from the University of Massachusetts, an M.S. in Oceanography from Oregon State University and a Ph.D. in Biology from Dalhousie University. He was on the faculty of Imperial College of Science and Technology in London for six years and was the Deputy Director of the Renewable Resources Assessment Group, and internationally known quantitative analysis and policy group. He is currently the President of MRAG Americas, a consulting company with offices in Florida, Massachusetts and is a member of the Board of Directors of MRAG, a London-based international marine resource consultancy.