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Forest conversion induces seasonal variation in microbial beta-diversity
论文题目: Forest conversion induces seasonal variation in microbial beta-diversity
第一作者: Liu, Shengen
刊物名称: ENVIRONMENTAL MICROBIOLOGY
学科: Microbiology
发表年度: 2018
卷: 20
期: 1
页码: 111-123
摘要:

World-wide conversion of natural forests to other land uses has profound effects on soil microbial communities. However, how soil microbial beta-diversity responds to land-use change and its driving mechanisms remains poorly understood. In this study, therefore, we examined the effect of forest conversion from native broad-leaved forest to coniferous plantation on soil microbial beta-diversity and its underlying mechanisms in both summer and winter in subtropical China. Microbial communities increasingly differed in structure as geographical distance between them increased, and the slope of the relationship among distances and community similarity differed among forest covers. In general, as with microbial beta-diversity, slopes also shifted across seasons. Finally, null deviations of bacterial and fungal communities were lower in coniferous plantation and presented opposing seasonal variations with greater influences of deterministic processes in summer for soil fungi and in winter for soil bacteria. Integrating previous frameworks with our beta-null model results, we propose a conceptual model to link microbial secondary succession to stochastic/deterministic shifts in forest ecosystems. Overall, forest conversion induced significant increases in stochastic processes in both bacterial and fungal community assemblies. Therefore, our results highlight the importance of spatiotemporal scales to assess the influence of land-use change on microbial beta-diversity.

全文链接: http://onlinelibrary.wiley.com/doi/10.1111/1462-2920.14017/abstract;jsessionid=2F8D2E2443E8FA865B5252439C14874F.f01t04
影响因子: 5.395

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