Herbivores alleviate the negative effects of extreme drought on plant community by enhancing dominant species

文献类型： 外文期刊

第一作者： Xu, Chong

作者： Xu, Chong;Zhang, Weiguo;Xu, Chong;Ke, Yuguang;Yu, Qiang;Wu, Honghui;Smith, Melinda D.;Lemoine, Nathan P.

作者机构：

关键词： extreme drought; insect herbivores; pant community cover; semiarid grassland; dominant species

期刊名称：JOURNAL OF PLANT ECOLOGY （ 影响因子：1.774； 五年影响因子：2.547 ）

ISSN： 1752-9921

年卷期： 2021 年 14 卷 6 期

页码：

收录情况： SCI

摘要： Aims Both extreme drought and insect herbivores can suppress plant growth in grassland communities. However, most studies have examined extreme drought and insects in isolation, and there is reason to believe that insects might alter the ability of grasslands to withstand drought. Unfortunately, few studies have tested the interactive effects of extreme drought and insect herbivores in grassland communities. Methods Here, we tested the drought-herbivore interactions using a manipulative experiment that factorially crossed extreme drought with the exclusion of insect herbivores in a temperate semiarid grassland in Inner Mongolia. Important Findings Our results demonstrated that both extreme drought and insect herbivores separately decreased total plant cover. When combined, insect herbivores reduced the impact of drought on total cover by increasing the relative abundance of drought-resistant dominant species. Our results highlight that the negative effect of extreme drought on total plant cover could be alleviated by maintaining robust insect herbivore communities.

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[1]Herbivores alleviate the negative effects of extreme drought on plant community by enhancing dominant species. Xu, Chong,Zhang, Weiguo,Xu, Chong,Ke, Yuguang,Yu, Qiang,Wu, Honghui,Smith, Melinda D.,Lemoine, Nathan P.. 2021

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