Abandoned, lost or otherwise discarded fishing gear (ALDFG) represents a significant, yet ultimately unknown amount of global marine debris, with serious environmental and socioeconomic impacts. This study reviews 68 publications from 1975 to 2017 that contain quantitative information about fishing gear losses. Gear loss estimates reported by the studies ranged widely, with all net studies reviewed reporting annual gear loss rates from 0% to 79.8%, all trap studies reporting gear loss rates from 0% to 88%, and all line studies reporting gear loss rates from 0.1% to 79.2%. Information obtained from this review was used to perform a meta-analysis that provides the first synthetic, statistically robust estimates of global fishing gear losses. The meta-analysis estimates global fishing gear losses for different major gear types. We estimate that 5.7% of all fishing nets, 8.6% of all traps, and 29% of all lines are lost around the world each year. Furthermore, we identified key gear characteristics, operational aspects and environmental contexts that influence gear loss. These estimates can be used to support sustainable fisheries development through informing risk assessments for fisheries and monitoring and assessment efforts to reduce gear losses.

中文翻译：

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全球范围内渔具损失率的估计：文献综述和荟萃分析

被遗弃、丢失或以其他方式丢弃的渔具 (ALDFG) 代表了大量但最终未知数量的全球海洋垃圾，对环境和社会经济造成严重影响。本研究回顾了 1975 年至 2017 年的 68 份出版物，其中包含有关渔具损失的定量信息。研究报告的渔具损失估计范围很广，所有审查的净研究报告的年渔具损失率为 0% 至 79.8%，所有陷阱研究报告的渔具损失率为 0% 至 88%，所有线路研究报告的渔具损失率为0.1% 至 79.2%。从这次审查中获得的信息用于进行荟萃分析，该分析提供了全球渔具损失的第一个综合的、统计上可靠的估计。元分析估计了不同主要渔具类型的全球渔具损失。我们估计 5。全世界每年有 7% 的渔网、8.6% 的陷阱和 29% 的鱼线丢失。此外，我们确定了影响齿轮损失的关键齿轮特性、操作方面和环境背景。通过为渔业风险评估提供信息以及监测和评估减少渔具损失的努力，这些估计可用于支持可持续渔业发展。