文献类型：期刊文献

英文题名：Shifting mechanisms of elevational diversity and biomass patterns in soil invertebrates at treeline

作者：Xu, Guorui[1,2] Lin, Yinghua[3] Zhang, Shuang[1] Zhang, Yuxin[1] Li, Guixiang[1] Ma, Keming[1]

第一作者：Xu, Guorui

通信作者：Ma, KM[1]

机构：[1]Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;[2]Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China;[3]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China

年份：2017

卷号：113

起止页码：80-88

外文期刊名：SOIL BIOLOGY & BIOCHEMISTRY

收录：;EI(收录号：20172303749483);Scopus(收录号：2-s2.0-85020246672);WOS:【SCI-EXPANDED(收录号:WOS:000407536200009)】；

基金：This study was supported by National Natural Science Foundation of China (31470481). We would like to thank Yanpeng Xu and Ping Lu for help of the identification of soil invertebrates. We also thank Quan Chen, Qiang Zhang, Zihan Jiang, and Bingbing Wang for help of the field sampling of soil invertebrates. We thank four anonymous reviewers as well as the editor for their valuable comments that have improved this article substantially.

语种：英文

外文关键词：Elevational biodiversity patterns; Litter-dwelling invertebrates; Environmental correlates; Treeline

摘要：Ecologists and biogeographers have long been interested in the underlying mechanisms shaping the elevational patterns of biodiversity. However, most of these studies have been conducted aboveground. Although they deliver key ecosystem functions and services, the elevational diversity and biomass patterns of soil invertebrates, including a wide range of taxa, have been severely understudied, especially at treeline. To address this critical gap, we identified richness, abundance, and biomass patterns of soil invertebrates across an elevational gradient under below-treeline forest (from 1020 to 1770 asl) and above-treeline meadow (from 1790 to 2280 asl), respectively. We aimed to (1) identify the elevational patterns of richness, abundance, and biomass in soil invertebrates across the treeline; and (2) test whether these patterns break and the underlying mechanisms shift at the treeline. We found that both the diversity and biomass of litter-dwelling invertebrates showed hump-shaped patterns below the treeline and monotonically decreasing patterns above the treeline, respectively. Richness association of litter-dwelling invertebrates and herbaceous plants shifted from negative to positive at the treeline. For the soil-dwelling invertebrates, no elevational trends were detected in forest while the diversity decreased monotonically with elevation in meadow. In contrast to basal area and litter thickness in forest, temperature was most strongly related to the diversity of litter-dwelling invertebrates in meadow. We showed the breaks in elevational diversity patterns of soil invertebrates at the treeline, while elevational patterns of biomass did not change. Microclimate replaced productivity as the most important factor driving the diversity patterns of litter-dwelling invertebrates across the treeline with vegetation shifts induced by increasing elevation. (C) 2017 Elsevier Ltd. All rights reserved.