Climate gradient-driven intraspecific aggregation propensity linked to interpatch modulation in grassland communities

文献类型： 外文期刊

第一作者： Liu, Huaiqiang

作者： Liu, Huaiqiang;Wang, Xinyu;Liu, Zhiying;Jaesong, Saihanna;Liu, Jiayue;Yang, Qianhui;Wang, Ning;Gao, Xiaotian;Feng, Yarong;Li, Haoxin;Chai, Jianru;Zhang, Jialu;Li, Kexin;Li, Frank Yonghong;Liu, Huaiqiang;Wang, Xinyu;Liu, Zhiying;Jaesong, Saihanna;Liu, Jiayue;Yang, Qianhui;Wang, Ning;Gao, Xiaotian;Feng, Yarong;Li, Haoxin;Chai, Jianru;Zhang, Jialu;Li, Kexin;Li, Frank Yonghong;Liu, Huaiqiang;Wang, Xinyu;Liu, Zhiying;Jaesong, Saihanna;Liu, Jiayue;Yang, Qianhui;Wang, Ning;Gao, Xiaotian;Li, Haoxin;Chai, Jianru;Zhang, Jialu;Li, Kexin;Li, Frank Yonghong;Jaesong, Saihanna;Liu, Jiayue;Feng, Yarong

作者机构：

关键词： climate gradient; compositional diversity; floral multiplet; habitat amount hypothesis; needling method; null models; spatial pattern; typical steppe

期刊名称：ECOSPHERE （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN： 2150-8925

年卷期： 2024 年 15 卷 10 期

页码：

收录情况： SCI

摘要： The response of vegetation to climate change on a large scale should be studied at the community level rather than the species level. This necessitates a focused exploration of emerging spatial patterns. Here, we surveyed 264 sites in the Inner Mongolia typical steppe, using the "needling" method to investigate 39,600 clumps formed through the coexistence relationships of dominant species. We found that the effects of slow climate change on grassland communities can be categorized into two general trends: (1) a monotone relationship, characterized by changes in the number of dominant species, compositional diversity, and optimal patch area, and (2) a unimodal relationship, reflected in variations in the number of patches and interspecific associations. The two distinct trends, connected by optimal patch area, concurrently support both the habitat amount hypothesis and the intermediate disturbance hypothesis. These findings suggest that climate change indirectly influences the area and amount of vegetation patches by regulating the arrangement of clumps. Moreover, they indicate that it is the distribution, rather than the number, of species that serves as the front line for plant communities adapting to climate change.

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