Global patterns and drivers of alpine plant species richness
Global patterns and drivers of alpine plant species richness
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高山植物物种丰富度的全球格局和驱动因素
DOI：
10.1111/geb.13297
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发表时间：
2021
影响因子：
6.4
通讯作者：
Haider, Sylvia
中科院分区：
文献类型：
--
作者：
Testolin, Riccardo;Attorre, Fabio;Borchardt, Peter;Brand, Robert F.;Bruelheide, Helge;Chytrý, Milan;De Sanctis, Michele;Dolezal, Jiri;Finckh, Manfred;Haider, Sylvia
喜马拉雅地区的生态系统在面积、宏观环境和生物地理历史等方面存在差异，但这些因素与植物物种丰富度之间的关系尚不明确。本文在区域和群落尺度上对高寒生态系统植物物种丰富度的全球格局及其与环境、地理和历史因素的关系进行了研究。维管植物的主要分类群。方法利用具有代表性的全球高山植被数据集，包括26个生态区和6个生物地理领域的8,928个样地，利用基于样本的稀疏和外推法估算区域丰富度。然后，利用广义加性模型评价了区域和群落丰富度的纬向格局。利用来自全球栅格层的环境、地理和历史预测因子，我们在混合效应建模框架中模拟了区域和社区丰富度。结果区域丰富度的纬向格局在赤道附近和中纬度地区达到峰值，这与当前和过去的高寒地区、隔离以及区域间土壤pH的变化有关。在群落水平上，物种丰富度在北半球中纬度地区最高，尽管区域内存在较大差异。群落丰富度与宏观气候和历史预测因子相关，其他空间结构因子的影响较大。与已知的纬向多样性梯度相反，欧亚大陆部分温带地区的高山植物物种丰富度与páramo等高多样性热带生态系统相当。这些热点地区的物种丰富度主要由高寒地区的范围及其冰川历史来解释，而群落丰富度则取决于当地的环境因素。我们的研究结果突出了中纬度地区物种丰富度的热点，表明高寒植物多样性与区域特质和高寒生态系统的历史流行率有关，而不是与当前的宏观气候梯度有关。
AimAlpine ecosystems differ in area, macroenvironment and biogeographical history across the Earth, but the relationship between these factors and plant species richness is still unexplored. Here, we assess the global patterns of plant species richness in alpine ecosystems and their association with environmental, geographical and historical factors at regional and community scales.LocationGlobal.Time periodData collected between 1923 and 2019.Major taxa studiedVascular plants.MethodsWe used a dataset representative of global alpine vegetation, consisting of 8,928 plots sampled within 26 ecoregions and six biogeographical realms, to estimate regional richness using sample‐based rarefaction and extrapolation. Then, we evaluated latitudinal patterns of regional and community richness with generalized additive models. Using environmental, geographical and historical predictors from global raster layers, we modelled regional and community richness in a mixed‐effect modelling framework.ResultsThe latitudinal pattern of regional richness peaked around the equator and at mid‐latitudes, in response to current and past alpine area, isolation and the variation in soil pH among regions. At the community level, species richness peaked at mid‐latitudes of the Northern Hemisphere, despite a considerable within‐region variation. Community richness was related to macroclimate and historical predictors, with strong effects of other spatially structured factors.Main conclusionsIn contrast to the well‐known latitudinal diversity gradient, the alpine plant species richness of some temperate regions in Eurasia was comparable to that of hyperdiverse tropical ecosystems, such as the páramo. The species richness of these putative hotspot regions is explained mainly by the extent of alpine area and their glacial history, whereas community richness depends on local environmental factors. Our results highlight hotspots of species richness at mid‐latitudes, indicating that the diversity of alpine plants is linked to regional idiosyncrasies and to the historical prevalence of alpine ecosystems, rather than current macroclimatic gradients.
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影响因子：
3.9
作者：
P. Sklenář;I. Hedberg;A. Cleef
通讯作者：
P. Sklenář;I. Hedberg;A. Cleef
高山植物群落沿海拔和地形梯度的生物地理解构
影响因子：
2.8
作者：
B. Jiménez‐Alfaro;C. Marcenó;Á. Bueno;R. Gavilán;J. Obeso
通讯作者：
J. Obeso
影响因子：
1.4
作者：
Harris, Stuart A.
通讯作者：
Harris, Stuart A.
南非 uKhahlamba-Drakensberg 公园世界遗产地岛山的植物社会学调查和植被描述
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
R. Brand;N. Collins;P. D. Preez
通讯作者：
P. D. Preez
影响因子：
2.8
作者：
Bruelheide, Helge;Dengler, Juergen;Zverev, Andrei
通讯作者：
Zverev, Andrei