当前位置: X-MOL 学术Nat. Ecol. Evol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Impacts of wildlife trade on terrestrial biodiversity
Nature Ecology & Evolution ( IF 16.8 ) Pub Date : 2021-02-15 , DOI: 10.1038/s41559-021-01399-y
Oscar Morton 1 , Brett R Scheffers 2 , Torbjørn Haugaasen 3 , David P Edwards 1
Affiliation  

The wildlife trade is worth billions of dollars annually and affects most major taxonomic groups. Despite this, a global understanding of the trade’s impacts on species populations is lacking. We performed a quantitative meta-analysis of the wildlife trade that synthesized 506 species-level effect sizes from 31 studies, estimating trade-driven declines in mammals (452 effect sizes), birds (36) and reptiles (18). Overall, species declined in abundance by 62% (95% confidence interval (CI), 20 to 82%) where trade occurs. Reductions involving national or international trade were greatest, driving declines of 76% (95% CI, 36 to 91%) and 66% (95% CI, 12 to 87%), respectively. The impacts of trade were pervasive, requiring over 102 hours of travel time from settlements for trade to have no mean effect. Current protective measures fail species, with significant declines even where the harvesting for trade occurs in protected areas. Population declines tracked species threat status, indicating heightened extirpation and extinction risk in traded species. Critically, for such a severe global threat to wildlife, our analysis unearthed a limited number of studies using treatment versus control comparisons, and no studies on amphibians, invertebrates, cacti or orchids. Improved management, tackling both unsustainable demand and trade reporting, must be a conservation priority to prevent rampant trade-induced declines.



中文翻译:

野生动物贸易对陆地生物多样性的影响

野生动物贸易每年价值数十亿美元,影响到大多数主要分类群。尽管如此,全球仍缺乏对贸易对物种种群影响的了解。我们对野生动物贸易进行了定量荟萃分析,综合了来自 31 项研究的 506 个物种水平的影响大小,估计了贸易驱动的哺乳动物(452 个影响大小)、鸟类(36 个)和爬行动物(18 个)的下降。总体而言,在贸易发生的地区,物种数量下降了 62%(95% 置信区间 (CI),20% 至 82%)。涉及国内或国际贸易的降幅最大,分别下降了 76%(95% CI,36% 至 91%)和 66%(95% CI,12% 至 87%)。贸易的影响无处不在,从定居点到贸易需要超过 102 小时的旅行时间才能产生不小的影响。目前的保护措施使物种失效,即使贸易采伐发生在保护区内,也显着下降。人口下降跟踪物种威胁状况,表明贸易物种的灭绝和灭绝风险增加。至关重要的是,对于如此严重的全球野生动物威胁,我们的分析发现了数量有限的使用治疗与对照比较的研究,并且没有对两栖动物、无脊椎动物、仙人掌或兰花进行研究。改进管理,解决不可持续的需求和贸易报告,必须成为保护优先事项,以防止贸易引起的急剧下降。我们的分析发现了有限数量的使用治疗与对照比较的研究,没有关于两栖动物、无脊椎动物、仙人掌或兰花的研究。改进管理,解决不可持续的需求和贸易报告,必须成为保护优先事项,以防止贸易引起的急剧下降。我们的分析发现了有限数量的使用治疗与对照比较的研究,没有关于两栖动物、无脊椎动物、仙人掌或兰花的研究。改进管理,解决不可持续的需求和贸易报告,必须成为保护优先事项,以防止贸易引起的急剧下降。

更新日期:2021-02-15
down
wechat
bug