Plant community diversity will decline more than increase under climatic warming
Plant community diversity will decline more than increase under climatic warming
复制标题
DOI：
10.1098/rstb.2019.0106
复制
发表时间：
2020-03-16
影响因子：
6.3
通讯作者：
Harrison, Susan
中科院分区：
文献类型：
--
作者：
Harrison, Susan
在快速的气候变化下，某些地区和地区可能会失去许多物种，使其灭绝，并可能从附近较温暖的环境中获得其他物种。本文认为，气候变暖导致的物种损失通常会超过收益，植物群落丰富度的净下降将大于净增加。丰富度的下降尤其可能发生在缺水的气候中，那里的干旱加剧将日益超过植物的耐受性，但也可能发生在缺乏陡峭气候梯度的较冷的温度有限的气候中，因此，大的适宜物种池不会立即相邻。变暖引起的损失的选择性可能导致功能和系统发育多样性以及物种丰富度的下降，特别是在水有限的气候中。我们目前对气候引起的多样性趋势的理解可能受到来自北温带高山山顶的大量研究的过度影响，那里的条件非常有利于当地物种丰富度的增加（可能是暂时的）。本文是“气候变化与生态系统：威胁、机遇和解决方案”主题的一部分。
Regions and localities may lose many species to extinction under rapid climate change and may gain other species that colonize from nearby warmer environments. Here, it is argued that warming-induced species losses will generally exceed gains and there will be more net declines than net increases in plant community richness. Declines in richness are especially likely in water-limited climates where intensifying aridity will increasingly exceed plant tolerances, but also in colder temperature-limited climates where steep climatic gradients are lacking, and therefore, large pools of appropriate species are not immediately adjacent. The selectivity of warming-induced losses may lead to declines in functional and phylogenetic diversity as well as in species richness, especially in water-limited climates. Our current understanding of climate-caused diversity trends may be overly influenced by numerous studies coming from north-temperate alpine mountaintops, where conditions are unusually favourable for increases-possibly temporary-in local species richness. This article is part of the theme issue 'Climate change and ecosystems: threats, opportunities and solutions'.