期刊
OCEAN & COASTAL MANAGEMENT
卷 134, 期 -, 页码 52-68出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ocecoaman.2016.09.012
关键词
Captain; Surfclam; Fishery model; Fishing practice; Abundance decline
资金
- NSF [GEO-0909484]
- NSF I/UCRC (Industry/University Cooperative Research Center) Science Center for Marine Fisheries (SCeMFiS) [ENG-1266057]
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1266065, 1266057] Funding Source: National Science Foundation
Mid-Atlantic Bight (MAB) warming accompanied by a decline in recruitment has slowly reduced surf clam abundance. Simulations examined fishery dynamics during an extended period of low recruitment followed by stock recovery after a high-recruitment event. The model assigned performance characteristics to each vessel and gave captains defined behavioral proclivities including a tendency to search, to communicate with other captains, to use survey data, and to integrate variable lengths of past-history performance in targeting fishing trips. During the simulated excursion in abundance, LPUE (landings per unit effort) declined as lower abundance required an extended time at sea to catch a full load. Captains expanded their geographic range of interest steaming farther from port in an effort to maintain their performance. Net revenue declined. Use of survey data significantly improved performance. About equal in positive effect was moderate searching. Other behaviors incurred penalties. Communication failed to improve performance because both poor and good information was transferred. Reliance on a long period of catch history failed to improve performance because information was out of date during a time of rapidly changing conditions. In these simulations, no captains' behaviors prevented a collapse in vessel economics at low abundance, but certain behaviors limited the degree and duration of economic dislocation. (C) 2016 Elsevier Ltd. All rights reserved.
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