Erosion of global functional diversity across the tree of life.

Erosion of global functional diversity across the tree of life.
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全球生命之树的功能多样性受到侵蚀。

DOI:
10.1126/sciadv.abf2675
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发表时间:
2021-03
期刊:
影响因子:
13.6
通讯作者:
Toussaint A
Toussaint A
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Carmona CP;Tamme R;Pärtel M;de Bello F;Brosse S;Capdevila P;González-M R;González-Suárez M;Salguero-Gómez R;Vásquez-Valderrama M;Toussaint A

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在植物和脊椎动物中,最大的物种灭绝的风险普遍较高,生活节奏较慢。虽然四分之一的植物和脊椎动物物种面临灭绝的威胁,但人们对保护对全球生态战略多样性的潜在影响知之甚少。利用超过75,000种维管植物,哺乳动物,鸟类,爬行动物,两栖动物和淡水鱼的特征和系统发育信息,我们描述了这些群体中每个群体的全球功能谱。绘制这些光谱内的灭绝风险表明,生活节奏较慢的大型物种普遍受到威胁。模拟的灭绝情景暴露了全球功能谱中广泛的内部重组,这对所有群体来说都比预期的要大,对哺乳动物和两栖动物来说尤其严重。考虑到最大的物种对生态过程的不成比例的重要性,我们的研究结果强调了采取行动,以防止灭绝的megabiota的重要性。
Among plants and vertebrates, extinction risk is universally higher for the largest species with slower paces of life. Although one-quarter of plant and vertebrate species are threatened with extinction, little is known about the potential effect of extinctions on the global diversity of ecological strategies. Using trait and phylogenetic information for more than 75,000 species of vascular plants, mammals, birds, reptiles, amphibians, and freshwater fish, we characterized the global functional spectra of each of these groups. Mapping extinction risk within these spectra showed that larger species with slower pace of life are universally threatened. Simulated extinction scenarios exposed extensive internal reorganizations in the global functional spectra, which were larger than expected by chance for all groups, and particularly severe for mammals and amphibians. Considering the disproportionate importance of the largest species for ecological processes, our results emphasize the importance of actions to prevent the extinction of the megabiota.
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