禁止捕捞的海洋保护区的生态成功:利用人口动态理论为全球元分析提供信息
Jess K Hopf1, Victoria Quennessen1,2, Jacob Ridgway1
1Coastal Oregon Marine Experiment Station, Oregon State University, Newport, Oregon, USA.
Ecological applications : a publication of the Ecological Society of America
|September 11, 2024
概括
海洋保护区 (MPA) 对生物质和规模显示出积极的结果,但评估长期人口增加需要时间数据. 仔细解释评估指标对于有效的保护至关重要.
科学领域:
- 海洋生态海洋生态学
- 保护生物学 保护生物学
- 人口动态 人口动态
背景情况:
- 海洋保护区 (MPA) 的适应性管理需要对保护目标进行准确的评估,特别是对于被捕获的种群.
- 生态评估通常使用响应比率 (例如,外部-内部,前-后控制影响[BACI]) 来比较MPA的有效性.
- 海洋保护区是复杂的生态系统,具有非线性人口动态和受保护和外部人口之间的相互作用,使评估解释复杂化.
研究的目的:
- 为了探索不同的MPA响应比率指标如何在各种人口动态下使用两个补丁的人口模型表现.
- 通过贝叶斯框架和现有的元分析数据,评估MPA对全球鱼类和无脊椎动物种群的影响.
- 调查不同总结指标对MPA评估结果的影响.
主要方法:
- 在不同的生态条件下开发了一种两张贴的种群模型来模拟MPA响应比率 (外部-内部,前后,BACI).
- 进行了贝叶斯对MPA对鱼类和无脊椎动物种群的影响的评估,使用了82项研究的数据 (264个不采用MPA).
- 利用以前的全球元分析结果作为贝叶斯先验,并分析了不同总结指标的影响.
主要成果:
- 在全球范围内,MPA显示出积极的结果,与参考地点相比,生物质,密度和生物体大小在界限内增加.
- 响应比率比较类型产生不同的信息;外部-内部和BACI指标可能会错过MPA内的人口减少,而前后指标更敏感.
- 在82项研究中,只有18项提供了足够的时间数据来证实随着时间的推移,MPA内的人口丰度增加.
结论:
- 全球海洋保护区通常产生积极的保护结果,但评估方法必须考虑到潜在的种群动态,以避免误导性解释.
- 仅仅依靠外部内部或BACI响应比率可能会高估净保护效益; 时间数据对于评估长期丰度变化至关重要.
- 有效的MPA管理需要将经验发现与理论知识相结合,并将策略适应当地条件和观察结果.
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