Yong Chen 218 Libby Hall School of Marine Sciences University of Maine Orono , ME 04469 207.581.4303 Email Yong Chen In the U.S., most fisheries are managed on a species-by-species basis. Scientists and fishermen recognize that this conventional approach is often unsuccessful, because it does not account for the complexity of ecosystems, including interactions among … Continue reading R-08-04 Modeling ecosystem dynamics for American lobster (Homarus americanus) in the Gulf of Maine