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Latitudinal patterns of alien plant invasions
Journal of Biogeography ( IF 3.4 ) Pub Date : 2020-09-10 , DOI: 10.1111/jbi.13943
Qinfeng Guo 1 , Brian S. Cade 2 , Wayne Dawson 3 , Franz Essl 4 , Holger Kreft 5, 6 , Jan Pergl 7 , Mark Kleunen 8, 9 , Patrick Weigelt 5 , Marten Winter 10 , Petr Pyšek 7, 11
Affiliation  

Latitudinal patterns of biodiversity have long been a central topic in ecology and evolutionary biology. However, while most previous studies have focused on native species, little effort has been devoted to latitudinal patterns of plant invasions (with a few exceptions based on data from sparse locations). Using the most up-to-date worldwide native and alien plant distribution data from 801 regions (including islands), we compared invasion levels (i.e. alien richness/total richness) in the Northern and Southern Hemispheres and across continental regions and islands around the globe. Results from quantile regressions using B-splines to model nonlinearity showed (1) declining richness with increasing latitude, although the highest alien richness occurs at around 40 degrees in both hemispheres, (2) decreasing invasion levels towards higher latitudes on islands but a unimodal pattern in invasion level in continental regions in each hemisphere, (3) significantly higher invasion levels on islands than in continental regions and (4) a greater variability in invasion levels on islands at low latitudes than on high-latitude islands. In continental regions, only the mid-latitudes had high variability with both low and high invasion levels. Our findings identified latitudes with invasion hotspots where management is urgently needed, and latitudes with many areas of low invasions but high conservation potential where prevention of future invasions should be the priority.

中文翻译:

外来植物入侵的纬度模式

长期以来,生物多样性的纬度模式一直是生态学和进化生物学的中心话题。然而,虽然以前的大多数研究都集中在本地物种上,但很少致力于植物入侵的纬度模式(除了少数基于稀疏位置数据的例外)。使用来自 801 个地区(包括岛屿)的全球最新本地和外来植物分布数据,我们比较了北半球和南半球以及全球大陆地区和岛屿的入侵水平(即外来丰富度/总丰富度) . 使用 B 样条对非线性进行建模的分位数回归结果显示 (1) 丰富度随着纬度的增加而下降,尽管最高的外星人丰富度发生在两个半球的 40 度左右,(2) 岛屿上的入侵水平向高纬度降低,但每个半球大陆地区的入侵水平呈单峰模式,(3) 岛屿上的入侵水平明显高于大陆地区;(4) 岛屿上的入侵水平变化更大在低纬度地区比在高纬度岛屿。在大陆地区,只有中纬度地区具有高变异性,具有高低入侵水平。我们的研究结果确定了具有迫切需要管理的入侵热点的纬度,以及具有许多入侵低但保护潜力高的地区的纬度,应优先考虑预防未来的入侵。(3) 岛屿的入侵水平明显高于大陆地区; (4) 低纬度岛屿的入侵水平变异性大于高纬度岛屿。在大陆地区,只有中纬度地区具有高变异性,具有高低入侵水平。我们的研究结果确定了具有迫切需要管理的入侵热点的纬度,以及具有许多入侵低但保护潜力高的地区的纬度,应优先考虑预防未来的入侵。(3) 岛屿的入侵水平明显高于大陆地区; (4) 低纬度岛屿的入侵水平变异性大于高纬度岛屿。在大陆地区,只有中纬度地区具有高变异性,具有高低入侵水平。我们的研究结果确定了具有迫切需要管理的入侵热点的纬度,以及具有许多入侵低但保护潜力高的地区的纬度,应优先考虑预防未来的入侵。
更新日期:2020-09-10
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