Spatial variations of bacterial communities associated with biological soil crusts along a climatic gradient in alpine grassland ecosystems
文献类型：期刊论文
| 作者 | Wei, XT; Qin, FW; Han, B; Zhou, HK ; Liu, M; Shao, XQ
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| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2022 |
| 英文摘要 | Background and aims The ability of biological soil crusts (BSCs) to improve soil microenvironments is mainly due to microorganisms that form an integral component of the BSCs. We aimed to investigate the changes in bacterial communities within BSCs along climate gradients and explored factors and ecological processes that drive these variations. Methods Algal and lichen BSCs were sampled along an aridity gradient in alpine grasslands from the Qinghai-Tibet Plateau, China. Bacterial communities in BSCs were determined using high-throughput sequencing, and soil beneath the BSCs (0-5 cm) was collected for macro-nutrient determination. Results Algal BSCs consisted of more diverse bacterial communities than did lichen BSCs. Bacterial communities were significantly affected by the aridity index. With an increase in aridity index, bacterial diversity increased in algal BSCs but decreased in lichen BSCs. Additionally, lichen BSCs' bacterial communities were different from those of algal BSCs, especially in wetter areas, where Burkholderia dominated in lichen BSCs, but not in algal BSCs. Lichen BSCs' bacterial composition correlated significantly with soil pH and total nitrogen content, however that was not the case with algal BSCs. Stochastic processes governed the spatial variations of bacterial communities in lichen BSCs, which was different from the equivalent importance of stochastic and deterministic processes in algal BSCs. Conclusions Changes in BSCs associated bacterial communities along an aridity gradient were different between algal and lichen BSCs. Additionally, stochastic processes were much more important for lichen BSCs than algal BSCs in shaping spatial variations of bacterial communities. |
| 源URL | [http://210.75.249.4/handle/363003/61157]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Wei, XT,Qin, FW,Han, B,et al. Spatial variations of bacterial communities associated with biological soil crusts along a climatic gradient in alpine grassland ecosystems[J]. PLANT AND SOIL,2022. |
| APA | Wei, XT,Qin, FW,Han, B,Zhou, HK,Liu, M,&Shao, XQ.(2022).Spatial variations of bacterial communities associated with biological soil crusts along a climatic gradient in alpine grassland ecosystems.PLANT AND SOIL. |
| MLA | Wei, XT,et al."Spatial variations of bacterial communities associated with biological soil crusts along a climatic gradient in alpine grassland ecosystems".PLANT AND SOIL (2022). |
入库方式： OAI收割
来源：西北高原生物研究所
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