Latitudinal variation in herbivory: hemispheric asymmetries and the role of climatic drivers
Latitudinal variation in herbivory: hemispheric asymmetries and the role of climatic drivers
复制标题
食草动物的纬度变化：半球不对称和气候驱动因素的作用
DOI：
10.1111/1365-2745.12588
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发表时间：
2016-07-01
影响因子：
5.5
通讯作者：
Ma, Keming
中科院分区：
文献类型：
--
作者：
Zhang, Shuang;Zhang, Yuxin;Ma, Keming
过去，人们普遍认为食草动物随着纬度的增加而减少。然而，一些实证研究未能支持这一假设，导致激烈的争论。除了提供一个定量评估的纬度梯度在草食动物，我们的研究旨在提供新的信息气候因素在塑造草食动物的纬度梯度的作用。通过对已发表的食草动物研究资料的收集和分析，验证了纬向食草动物假说（LH假说）以及温度和降水与食草动物的关系。基于分布在世界各地的1000多种植物的1890个数据点，我们的研究结果表明，食草动物随着纬度的降低而增加，仅在北方半球。与此相反，在南半球，草食动物没有纬度的关系，并倾向于减少与温度。合成.这项研究表明，LH假说只在北方半球得到支持，并强调了温度在解释全球范围内草食动物格局中的重要性。在今后的研究中，这些可能的半球不对称性不应被忽视。
In the past, it was widely accepted that herbivory decreased with latitude. However, several empirical studies have failed to support this hypothesis, leading to strong debate. In addition to providing a quantitative assessment of the latitudinal gradient in herbivory, our study aims to provide new information about the role of climatic factors in shaping the latitudinal gradient in herbivory. Through the collection and analysis of published data on herbivory, we tested the latitudinal herbivory hypothesis (LH hypothesis) and the relationship of temperature and precipitation to herbivory. Based on 1890 data points distributed world‐wide from more than 1000 plant species, our results show that herbivory decreased with latitude and increased with temperature only in the Northern Hemisphere. In contrast, in the Southern Hemisphere, herbivory did not have a relationship with latitude and tended to decrease with temperature. Synthesis. This study shows the LH hypothesis is supported only in the Northern Hemisphere and highlights the importance of temperature in explaining the pattern of herbivory at the global scale. These possible hemispheric asymmetries in herbivory should not be overlooked in future studies.