世界未经评估的渔业的现状和解决方案
Christopher Costello1, Daniel Ovando, Ray Hilborn
1Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA. costello@bren.ucsb.edu
概括
许多未经评估的渔业状况不佳,但大型渔业可能是可持续的. 全球渔业重建可以显著增加鱼类的丰富性和产量.
科学领域:
- 海洋生物学 海洋生物学
- 渔业 科学 渔业 科学
- 保护生物学 保护生物学
背景情况:
- 最近的报告表明,评估渔业的可持续性得到改善.
- 然而,超过80%的全球捕捞来自未经评估的渔业,身份不明.
- 评估这些未经评估的渔业的状况对于全球渔业管理至关重要.
研究的目的:
- 评估全球未经评估的渔业的可持续性.
- 为了比较未经评估的渔业与正式评估的渔业的状况.
- 为了确定全球渔业恢复的潜力.
主要方法:
- 开发了一种新的方法,整合了物种的生命史,捕捞和渔业发展数据.
- 应用了这种方法来估计成千上万个未经评估的全球渔业的状态.
- 分析了库存丰度的趋势和潜在的可持续收获.
主要成果:
- 小型未经评估的渔业的状况远比经过评估的渔业要糟糕得多.
- 大规模未经评估的渔业表现与经过评估的渔业相当.
- 尽管下降,但64%的未评估库存可以重建以增加可持续收获.
结论:
- 全球渔业复苏为增加鱼类繁多 (56%) 和产量 (8-40%) 提供了巨大的潜力.
- 有效管理未经评估的渔业对于全球海洋资源的可持续性至关重要.
- 调查结果强调了对全球大部分渔业进行改进的评估和管理策略的需要.
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