Topsoil microbial community structure responds to land cover type and environmental zone in the Western Pacific region.

Autor: Lin YP; Department of Bioenvironmental Systems Engineering, National Taiwan University, Taiwan., Wunderlich RF; Department of Bioenvironmental Systems Engineering, National Taiwan University, Taiwan., Lin CM; Department of Bioenvironmental Systems Engineering, National Taiwan University, Taiwan., Uphoff N; SRI International Network and Resources Center (SRI-Rice), Cornell University, USA., Schmeller DS; Ecolab, Université de Toulouse, UPS, INPT, CNRS, Toulouse, France., Shipin OV; Environmental Engineering and Management, Asian Institute of Technology, Thailand., Watanabe T; Faculty of Environmental Earth Science, Hokkaido University, Japan., Ngadisih; Department of Agricultural and Biosystems Engineering, Faculty of Agricultural Technology, Universitas Gadjah Mada, Indonesia., Mukhtar H; Department of Bioenvironmental Systems Engineering, National Taiwan University, Taiwan. Electronic address: mukhtar@ntu.edu.tw.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2021 Apr 10; Vol. 764, pp. 144349. Date of Electronic Publication: 2020 Dec 25.
DOI: 10.1016/j.scitotenv.2020.144349
Abstrakt: Soil encompasses diverse microbial communities that are essential for fundamental ecosystem functions such as biogeochemical cycling. To better understand underlying biogeochemical processes, it is necessary to know the structure of soil archaeal and bacterial communities and their responses to edaphic and climate variables within and across various land cover types (LCTs) and environmental zones (ENZs). Here we sampled eighty-nine sites across five ENZs and four LCTs within the Western Pacific region. Through leveraging the second-generation sequencing of topsoil samples, we showed that α-diversity (taxonomic diversity) of archaea strongly varied within LCTs, whereas bacterial α-diversity was significantly controlled by both LCT and ENZ. Soil archaea and bacteria showed global niche differentiation associated with contrasting diversity responses to latitude and differential responses of microbial diversity patterns to edaphic and climate variables within LCTs and ENZs. In contrast to α-diversity, microbial β-diversity (the compositional dissimilarity between sites) was majorly governed by ENZs, particularly for archaea (P < 0.01). Our results highlight the importance of LCTs and ENZs for understanding soil microbial contributions to nutrient dynamics and ecosystem resilience under land-use intensification and climate change.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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