Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2015.09.012 |
Sheep grazing and soil bacterial diversity in shrublands of the Patagonian Monte, Argentina | |
Olivera, Nelda L.1; Prieto, Luciano1; Bertiller, Monica B.1,2; Ferrero, Marcela A.3 | |
通讯作者 | Olivera, Nelda L. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2016 |
卷号 | 125页码:16-20 |
英文摘要 | Our objective was to assess whether long-term continuous sheep grazing was associated with the bacterial community of the Patagonian Monte soils. We randomly extracted soil samples from 5 plant-covered patches (PCP) and the nearest inter-canopy areas (IC) at sites with low (L), moderate (M) and heavy (H) grazing intensity. Bacterial communities were evaluated by denaturing gradient gel electrophoresis (DGGE) and dominant bands were sequenced. Dendrograms showed a different association among grazing sites in PCP compared to IC areas. In PCP, M and H sites were clustered and DGGE revealed a high similarity in the bacterial community regardless of grazing intensity. In IC areas, analyses clustered L and M sites. Band sequencing revealed that members of these communities belonged to Sphingobacteria, Solibacteres, Gammaproteobacteria, Betaproteobacteria and Bacilli. Some of the band sequences related to Nitrosococcus oceani and Nitrosococcus watsonii which are restricted to marine environments and salt lakes. Microcoleus vaginatus and diatom chloroplast-related sequences were mainly detected in IC areas from L and M. Heavy grazing could alter autotrophic bacteria/diatom composition in IC areas possibly due to physical disturbance of biological crusts by trampling, threatening the potential of crust re-formation. Grazing intensity affected soil bacterial communities differently in PCP and IC areas with soil crust, highlighting the importance of improving our understanding of microbial diversity responses to land use. (C) 2015 Elsevier Ltd. All rights reserved. |
英文关键词 | Arid ecosystems Grazing Bacteria Patagonia |
类型 | Article |
语种 | 英语 |
国家 | Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000366773000003 |
WOS关键词 | 16S RIBOSOMAL-RNA ; COMMUNITIES ; HISTORY ; CRUSTS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/194075 |
作者单位 | 1.Consejo Nacl Invest Cient & Tecn, Ctr Nacl Patagon CENPAT, Chubut, Argentina; 2.Univ Nacl Patagonia San Juan Bosco, Puerto Madryn, Chubut, Argentina; 3.Consejo Nacl Invest Cient & Tecn, Planta Photo Proc Ind Microbiol PROIMI, San Miguel De Tucuman, Tucuman, Argentina |
推荐引用方式 GB/T 7714 | Olivera, Nelda L.,Prieto, Luciano,Bertiller, Monica B.,et al. Sheep grazing and soil bacterial diversity in shrublands of the Patagonian Monte, Argentina[J],2016,125:16-20. |
APA | Olivera, Nelda L.,Prieto, Luciano,Bertiller, Monica B.,&Ferrero, Marcela A..(2016).Sheep grazing and soil bacterial diversity in shrublands of the Patagonian Monte, Argentina.JOURNAL OF ARID ENVIRONMENTS,125,16-20. |
MLA | Olivera, Nelda L.,et al."Sheep grazing and soil bacterial diversity in shrublands of the Patagonian Monte, Argentina".JOURNAL OF ARID ENVIRONMENTS 125(2016):16-20. |
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