生态系统
生态学
β多样性
微生物种群生物学
环境科学
航程(航空)
群落结构
土壤水分
生物
土壤科学
生物多样性
细菌
遗传学
材料科学
复合材料
作者
Dong-Hui Zhao,Congcong Shen,Zhiming Zhang,Li Wang,Limei Zhang,Baodong Chen,Guo‐Xin Sun,Yuan Ge
出处
期刊:Catena
[Elsevier]
日期:2024-02-01
卷期号:235: 107698-107698
标识
DOI:10.1016/j.catena.2023.107698
摘要
The distribution of microbial communities along elevational gradients has been widely reported, but whether there are linkages between soil microbial diversity, community assembly processes and microbial functions in elevational patterns, and whether the patterns are influenced by micro-topography (e.g. slope direction), remain unclear. Here, we collected soils from two slope directions (i.e. north-facing slope and east-facing slope) along the elevational gradient (∼2000 m elevational range) of a mountain ecosystem. Unexpectedly, for bacterial alpha diversity or microbial functions (i.e. multifunctionality), we found consistent elevational patterns for both slope directions, with alpha diversity showing a hump-shaped pattern and microbial functions exhibiting a linearly increasing trend. Similarly, for both slope directions, there were significant elevational distance-decay relationships in the bacterial beta diversity pattern. The elevational patterns of soil bacterial diversity were determined by the transitions of community assembly processes, while microbial functions were mainly influenced by bacterial community composition. These results suggest that soil bacterial diversity, community assembly processes and microbial functions are interactive along an elevational gradient, and that these interactions are independent of slope direction. Our study adds new insights into the elevational patterns of soil bacterial communities and their drivers and ecological consequences in mountain ecosystems.
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