捕捞份额减缓了捕鱼的竞争
Anna M Birkenbach1,2, David J Kaczan1,2, Martin D Smith1,3
1Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, USA.
Nature
|April 6, 2017
概括
捕捞份额是一种基于市场的管理工具, 通过减少美国渔业的竞争力来有效地延长捕捞季节. 这项研究证实了捕捞份额在渔业管理中的好处.
科学领域:
- 海洋生物学
- 渔业科学
- 环境经济学
背景情况:
- 渔业的"公共悲剧"导致捕鱼季节缩短,造成生态损害,经济损失和安全风险.
- 捕捞份额是为了减轻这一现象,
研究的目的:
- 系统地分析自然实验并测试捕捞份额减少美国39个渔场的"捕鱼竞赛"的假设.
- 提供有关捕捞份额在改变捕捞季节动态方面的实证.
主要方法:
- 使用自然实验设计,将捕捞份额处理的渔业与单独匹配的对照渔业进行比较.
- 使用政策变化前后分析.
- 使用聚合模型和单个治疗对照对的元分析估计的平均政策治疗效应.
主要成果:
- 发现有强有力的证据表明,捕捞份额在分析的美国渔业中显著延长了捕捞季节.
- 这些结果与以市场为基础的管理,如捕捞份额,可以有效地结束"鱼类竞赛"的理论一致.
结论:
- 捕捞份额是延长捕捞季节和减轻渔业管理"竞争"的负面影响的有效工具.
- 这些发现支持在面临类似挑战的其他渔业中扩大基于市场的管理策略.
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