Widespread homogenization of plant communities in the Anthropocene.

Widespread homogenization of plant communities in the Anthropocene.
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DOI:
10.1038/s41467-021-27186-8
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发表时间:
2021-12-06
影响因子:
16.6
通讯作者:
Davis CC
Davis CC
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Daru BH;Davies TJ;Willis CG;Meineke EK;Ronk A;Zobel M;Pärtel M;Antonelli A;Davis CC

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本土生物多样性的减少和非本土物种的扩散是人类世的主要特征。这两个过程可以通过减少区域之间物种组合的特征和系统发育差异来推动生物同质化,从而减少生物多样性的区域独特性,并可能对关键的生态系统功能产生负面影响。然而,对这一现象缺乏全面的评估。在这里,使用一个超过200,000种植物的数据集,我们证明了物种和系统发育周转在粒度和空间范围上的广泛和时间性减少。主要生物群落内的同质化程度是明显的,绝大多数是由非本地物种的归化。亚洲和北美是非本地物种的主要来源;然而,它们出口的物种往往在遗传学上接近受体植物群。相比之下,澳大利亚、太平洋和欧洲在全球非本地物种库中贡献的物种较少,但在系统发育多样性方面却不成比例。大多数归化的时间轴与过去500年内广泛的人类迁移相吻合,并表明人类对区域生物多样性的深远影响超出了物种丰富度的变化。人类驱动的物种迁移和迁移使整个生物群落的植物群落更加同质化。在这里,作者量化了植物维管物种和地球仪的系统发育同质化,发现非本地物种归化是一个主要的驱动力。
Native biodiversity decline and non-native species spread are major features of the Anthropocene. Both processes can drive biotic homogenization by reducing trait and phylogenetic differences in species assemblages between regions, thus diminishing the regional distinctiveness of biotas and likely have negative impacts on key ecosystem functions. However, a global assessment of this phenomenon is lacking. Here, using a dataset of >200,000 plant species, we demonstrate widespread and temporal decreases in species and phylogenetic turnover across grain sizes and spatial extents. The extent of homogenization within major biomes is pronounced and is overwhelmingly explained by non-native species naturalizations. Asia and North America are major sources of non-native species; however, the species they export tend to be phylogenetically close to recipient floras. Australia, the Pacific and Europe, in contrast, contribute fewer species to the global pool of non-natives, but represent a disproportionate amount of phylogenetic diversity. The timeline of most naturalisations coincides with widespread human migration within the last ~500 years, and demonstrates the profound influence humans exert on regional biotas beyond changes in species richness. Human-driven movements and extinctions of species have made plant communities across biomes more homogenous. Here the authors quantify plant vascular species and phylogenetic homogenization across the globe, finding that non-native species naturalisations have been a major driver.
DOI: 10.1371/journal.pone.0066686
发表时间: 2013
期刊: PloS one
影响因子: 3.7
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发表时间: 1992-01-01
影响因子: 5.9
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发表时间: 2017-10-01
期刊: INTERNATIONAL JOURNAL OF CLIMATOLOGY
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作者:
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