The global offtake of wild animals is valued at US$400 billion annually and supports the livelihoods of 15% of the global population. Wetlands are amongst the most important ecosystems globally, but offtake may represent a substantial pressure. This study assessed the availability of information and evaluated the offtake of wild animals from wetlands by focussing on fish and waterbirds. A literature search identified 2726 studies on wetland offtake. Scoping of these resulted in 82 studies that contained quantitative information on fish or waterbird offtake. Fishing offtake statistics for inland waters are collated nationally by some governments, but other sources of information are few. Reporting of fish offtake for species or across scales was constrained by insufficient detail, even in relatively well-documented countries such as Bangladesh. Although government hunting statistics from Europe and North America were available, there was little waterbird data from less economically developed countries. The case of Canada indicated that the species richness and composition of waterbirds taken varied between indigenous subsistence and recreational hunting communities. Hidden (unquantified) offtake, of both fish and waterbirds, hinders obtaining precise data for offtake, which may threaten the conservation of species and the sustainability of wetland ecosystems.

中文翻译：

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全球从湿地捕捞野生动物：鱼类和鸟类的关键问题

全球每年野生动物的进口价值为 4000 亿美元，支持全球 15% 的人口的生计。湿地是全球最重要的生态系统之一，但吸收可能带来巨大压力。这项研究评估了信息的可用性，并通过关注鱼类和水鸟来评估湿地野生动物的摄入量。一项文献检索确定了 2726 项关于湿地取用的研究。对这些范围的界定导致了 82 项研究，其中包含有关鱼类或水鸟捕捞量的定量信息。一些政府在全国范围内整理了内陆水域的捕捞量统计数据，但其他信息来源很少。即使在记录相对完整的国家（如孟加拉国），物种或跨尺度鱼类的报告也因细节不足而受到限制。尽管可以获得欧洲和北美的政府狩猎统计数据，但经济欠发达国家的水鸟数据很少。加拿大的案例表明，水鸟的物种丰富度和组成在土著生计社区和休闲狩猎社区之间存在差异。鱼类和水鸟的隐蔽（未量化）摄取阻碍了获取准确的摄取数据，这可能威胁物种保护和湿地生态系统的可持续性。