Thermal tolerance, acclimatory capacity and vulnerability to global climate change
Thermal tolerance, acclimatory capacity and vulnerability to global climate change
复制标题
DOI：
10.1098/rsbl.2007.0408
复制
发表时间：
2008-02-23
期刊：
影响因子：
3.3
通讯作者：
Spicer, John I.
中科院分区：
文献类型：
--
作者：
Calosi, Piero;Bilton, David T.;Spicer, John I.
尽管有证据表明，生物分布正在随着最近的气候变暖而发生变化，但我们对物种生理和对气候变化的脆弱性之间的直接联系知之甚少。我们在一个定义明确的近亲欧洲潜水甲虫分支中证明了上热耐受性与其适应能力之间的正相关关系。我们预测，对高温耐受性最低的物种将最容易受到未来变暖的不利影响，因为它们的绝对热耐受性低，适应能力差。较高的热耐受性也与物种的地理范围大小呈正相关，这意味着最危险的物种已经是地理上最受限制的物种，是地中海山地系统的特有物种。我们关于耐受性和适应能力之间关系的研究结果与海洋动物的结果形成对比，表明关于热耐受性和对未来快速气候变化的响应的概括可能为时过早。
Despite evidence that organismal distributions are shifting in response to recent climatic warming, we have little information on direct links between species' physiology and vulnerability to climate change. We demonstrate a positive relationship between upper thermal tolerance and its acclimatory ability in a well-defined clade of closely related European diving beetles. We predict that species with the lowest tolerance to high temperatures will be most at risk from the adverse effects of future warming, since they have both low absolute thermal tolerance and poor acclimatory ability. Upper thermal tolerance is also positively related to species' geographical range size, meaning that species most at risk are already the most geographically restricted ones, being endemic to Mediterranean mountain systems. Our findings on the relationship between tolerance and acclimatory ability contrast with results from marine animals, suggesting that generalizations regarding thermal tolerance and responses to future rapid climate change may be premature.