Kanik Zafer, Kucuksenel Serkan
Department of Economics, Boston College, Chestnut Hill, MA 02467, USA.
Department of Economics, Middle East Technical University, Ankara 06800, Turkey.
Math Biosci. 2016 Jun;276:59-66. doi: 10.1016/j.mbs.2016.03.007. Epub 2016 Mar 24.
One of the main goals stated in the proposals for the Common Fisheries Policy (CFP) reform was achieving maximum sustainable yield (MSY) for all European fisheries. In this paper, we propose a fishing rights allocation mechanism or management system, which specifies catch limits for individual fishing fleets to implement MSY harvesting conditions in an age-structured bioeconomic model. An age-structured model in a single species fishery with two fleets having perfect or imperfect fishing selectivity is studied. If fishing technology or gear selectivity depends on the relative age composition of the mature fish stock, fixed harvest proportions, derived from catchability and bycatch coefficients, is not valid anymore. As a result, not only the age-structure and fishing technology but also the estimated level of MSY is steering the allocation of quota shares. The results also show that allocation of quota shares based on historical catches or auctioning may not provide viable solutions to achieve MSY.
《共同渔业政策》（CFP）改革提案中阐明的主要目标之一是实现所有欧洲渔业的最大可持续产量（MSY）。在本文中，我们提出了一种捕捞权分配机制或管理制度，该机制为各个捕鱼船队规定了捕捞限额，以便在年龄结构生物经济模型中实施最大可持续产量的捕捞条件。我们研究了单一物种渔业中的年龄结构模型，其中有两个具有完全或不完全捕捞选择性的船队。如果捕捞技术或渔具选择性取决于成熟鱼群的相对年龄组成，那么根据可捕系数和兼捕系数得出的固定捕捞比例就不再有效。因此，不仅年龄结构和捕捞技术，而且最大可持续产量的估计水平都在引导配额份额的分配。结果还表明，基于历史捕捞量或拍卖的配额份额分配可能无法为实现最大可持续产量提供可行的解决方案。
