Climatic niche groups: A novel application of a common assumption predicting plant community response to climate change
Climatic niche groups: A novel application of a common assumption predicting plant community response to climate change
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DOI：
10.1016/j.ppees.2016.02.006
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发表时间：
2016-04-01
影响因子：
3.6
通讯作者：
Tielboerger, Katja
中科院分区：
文献类型：
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作者：
Bilton, Mark C.;Metz, Johannes;Tielboerger, Katja
根据气候生态位定义物种是生物气候包络模型（BEM）预测气候变化影响的简单而直观的原则。然而，这些相关的模型往往被批评为忽略了许多生态过程。在这里，我们将同样的生态位原理应用于中长期气候操纵研究中的整个群落，其中生态过程是固有的。在以色列的九代研究中，我们在两个主要在降雨量和变化方面不同的地点操纵降雨（干旱-30%;灌溉+30%;控制自然降雨）。我们分析了社区的操作分组物种的气候降雨生态位的基础上的反应。这些反应进行了比较，分析的基础上，单种，总密度，和常用的分类groupings.Climate生态位组产生了明确和一致的结果：在社区内，那些分布在干燥地区的物种表现相对较好的干旱处理，和那些从潮湿的气候表现更好的灌溉。相比之下，基于其他原则的分析显示，对社区动态的了解很少。值得注意的是，大多数关系较弱的干燥，更多变的网站，这表明，增强适应的变化可能会缓冲气候变化的影响，我们提供了强大的实验证据表明，使用气候生态位通常适用于BEM是一种有效的方法，引发社区的变化，以应对气候变化。然而，我们也认为，需要收集更多的经验信息，使用现场实验，以正确评估社区的脆弱性。因此，以这种方式使用的气候生态位组可以提供一个强大的工具和方向性测试框架，以概括和比较气候变化对栖息地的影响。(C)2016作者由爱思唯尔有限公司出版。
Defining species by their climatic niche is the simple and intuitive principle underlying Bioclimatic Envelope Model (BEM) predictions for climate change effects. However, these correlative models are often criticised for neglecting many ecological processes. Here, we apply the same niche principle to entire communities within a medium/long-term climate manipulation study, where ecological processes are inherently included.In a nine generation study in Israel, we manipulated rainfall (Drought -30%; Irrigation +30%; Control natural rainfall) at two sites which differ chiefly in rainfall quantity and variability. We analysed community responses to the manipulations by grouping species based on their climatic rainfall niche. These responses were compared to analyses based on single species, total densities, and commonly used taxonomic groupings.Climate Niche Groups yielded clear and consistent results: within communities, those species distributed in drier regions performed relatively better in the drought treatment, and those from wetter climates performed better when irrigated. In contrast, analyses based on other principles revealed little insight into community dynamics. Notably, most relationships were weaker at the drier, more variable site, suggesting that enhanced adaptation to variability may buffer climate change impacts.We provide robust experimental evidence that using climatic niches commonly applied in BEMs is a valid approach for eliciting community changes in response to climate change. However, we also argue that additional empirical information needs to be gathered using experiments in situ to correctly assess community vulnerability. Climatic Niche Groups used in this way, may therefore provide a powerful tool and directional testing framework to generalise and compare climate change impacts across habitats. (C) 2016 The Authors. Published by Elsevier GmbH.