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United States; Gulf of Maine; harbor porpoise; fish stock assessment; relative abundance; Atlantic herring; fishery management
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Trends In Abundance Of The Gulf Of Maine Population Of Harbor Porpoise, Paula Ann Olson
Trends In Abundance Of The Gulf Of Maine Population Of Harbor Porpoise, Paula Ann Olson
Marine Affairs Theses and Major Papers
Hundreds of harbor porpoise die each year as bycatch in the Gulf of Maine's sink gillnet fishery. In recent years, concern has arisen whether the Gulf of Maine population of harbor porpoise can sustain this level of bycatch. It is believed that the population may have declined, or is declining as a result of the incidental moralities. This paper reviews what is known about Gulf of Maine harbor porpoise demographics and how that information is incorporated into the management of the porpoise/fishery interaction. Included in this paper is a new study on the trend of relative abundance of harbor porpoise …