| Title: | Soil bacterial community responses to warming and grazing in a Tibetan alpine meadow |
| Author(s): | Li Y; Lin Q; Wang S; Li X; Liu W; Luo C; Zhang Z; Zhu X; Jiang L; Li X; |
| Address: | "Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China. Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China. Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China wangsp@itpcas.ac.cn. Key Laboratory of Environmental and Applied Microbiology & Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Sichuan 610041, China. Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA" |
| ISSN/ISBN: | 1574-6941 (Electronic) 0168-6496 (Linking) |
| Abstract: | "Warming and grazing significantly affect the structure and function of an alpine meadow ecosystem. Yet, the responses of soil microbes to these disturbances are not well understood. Controlled asymmetrical warming (+1.2/1.7 degrees C during daytime/nighttime) with grazing experiments were conducted to study microbial response to warming, grazing and their interactions. Significant interactive effects of warming and grazing were observed on soil bacterial alpha-diversity and composition. Warming only caused significant increase in bacterial alpha-diversity under no-grazing conditions. Grazing induced no substantial differences in bacterial alpha-diversity and composition irrespective of warming. Warming, regardless of grazing, caused a significant increase in soil bacterial community similarity across space, but grazing only induced significant increases under no-warming conditions. The positive effects of warming on bacterial alpha-diversity and grazing on community similarity were weakened by grazing and warming, respectively. Soil and plant variables explained well the variations in microbial communities, indicating that changes in soil and plant properties may primarily regulate soil microbial responses to warming in this alpine meadow. The results suggest that bacterial communities may become more similar across space in a future, warmed climate and moderate grazing may potentially offset, at least partially, the effects of global warming on the soil microbial diversity" |
| Keywords: | Animals Biodiversity *Global Warming *Grassland Herbivory Hot Temperature *Microbiota Plants/microbiology Sheep Soil/chemistry *Soil Microbiology Tibet Tibetan alpine meadow bacterial composition bacterial diversity grazing interaction warming; |
| Notes: | "MedlineLi, Yaoming Lin, Qiaoyan Wang, Shiping Li, Xiangzhen Liu, Wentso Luo, Caiyun Zhang, Zhenhua Zhu, Xiaoxue Jiang, Lili Li, Xine eng Research Support, Non-U.S. Gov't England 2015/12/05 FEMS Microbiol Ecol. 2016 Jan; 92(1):fiv152. doi: 10.1093/femsec/fiv152. Epub 2015 Dec 2" |
