Explanation of beta diversity in European alpine grasslands changes with scale
Explanation of beta diversity in European alpine grasslands changes with scale
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欧洲高山草原β多样性随规模变化的解释
DOI：
10.1002/ecs2.4066
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发表时间：
2022
期刊：
影响因子：
2.7
通讯作者：
Ruprecht, Eszter
中科院分区：
文献类型：
--
作者：
Malanson, George P.;Pansing, Elizabeth R.;Testolin, Riccardo;Abdulhak, Sylvain;Bergamini, Ariel;Ćušterevska, Renata;Marcenò, Corrado;Kuzmanović, Nevena;Milanović, Đorđije;Ruprecht, Eszter
不同地点之间的环境差异和物种的扩散限制对解释多样性的重要性在不同的生物系统和地理区域之间是不同的。我们假设，气候，然后扩散限制将主要解释的相似性，高山植被在次大陆范围内对区域之间的距离增加。我们计算了所有对23个欧洲山区低于50° N的石灰质或硅质基质划分后，每个地区的物种列表的相似性。距离衰减相似性更好地拟合由一个三次多项式比负指数函数，并拟合钙质比硅质基板。共性分析表明，气候差异对β多样性的解释比例在区域间距离增加的梯度上呈单峰模式，而扩散限制的解释在两种基质上均呈持续上升的模式。在硅质基质上，扩散限制解释了更多的β多样性的变化，只有在较长的距离，但它是主要的在所有距离上的钙质基质。在2600公里处对距离的陡峭响应<1600 km and >可能表明在不同的时间尺度上的扩散限制，而在最长距离处对距离的响应的上升可能反映了一些地区在末次盛冰期之前和之后是多么孤立。
The importance of environmental difference among sites and dispersal limitations of species to the explanation of diversity differs among biological systems and geographical regions. We hypothesized that climate and then dispersal limitation will predominantly explain the similarity of alpine vegetation at increasing distances between pairs of regions at subcontinental extent. We computed the similarity of all pairs of 23 European mountain regions below 50° N after dividing the species lists of each region by calcareous or siliceous substrates. Distance decay in similarity was better fitted by a cubic polynomial than a negative exponential function, and the fit was better on calcareous than on siliceous substrate. Commonality analysis revealed that the proportion of explanation of beta diversity by climatic difference had unimodal patterns on a gradient of increasing distance between regions, while explanation by dispersal limitation had consistently rising patterns on both substrates. On siliceous substrate, dispersal limitation explained more of the variation in beta diversity only at longer distances, but it was predominant at all distances on calcareous substrate. The steeper response to distance at <1600 km and >2600 km may indicate dispersal limitation at different temporal scales, and the uptick in the response to distance at the longest distances may reflect how isolated some regions have been before and since the last glacial maximum.
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DOI：
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发表时间：
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期刊：
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