R-14-02 Evaluating Performance of Stock Assessment Models for Northern Shrimp and Atlantic Herring

Yong Chen
School of Marine Sciences
University of Maine
207.581.4303
ychen@maine.edu

Jie Cao
School of Marine Sciences
University of Maine

Shrimp (Pandalus borealis) and herring (Clupea harengus) are important components of the Gulf of Maine ecosystem and support commercial fisheries. The Atlantic States Marine Fisheries Commission, working with NOAA Fisheries and the Maine Department of Marine Resources, regulates the harvest of both species. Regulators depend on assessments of population size and structure based on data collected at sea and computer models. Sea Grant researcher Yong Chen has been working to improve the models used for stock assessments by incorporating the size of the animals and other aspects of their biology. New stock assessment models must be proven effective and accurate before they are adopted by fisheries managers. This latest grant will allow Chen to test the new models under different simulations of Gulf of Maine conditions and the growth of an individual shrimp or herring.

Two-year project, 2014-2016
Total Sea Grant funds: $143,778