Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow

Fungal richness and community composition are known to be positively associated with soil multifunctionality. However, the contributions of bacterial and fungal communities to the multiple soil functions of alpine meadow ecosystems have not been widely examined. Here, we surveyed the soil in Qinghai...

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Autores principales:	Jie Wang, Xiangtao Wang, Guobin Liu, Chao Zhang, Guoliang Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Alpine meadow Degradation Bacterial diversity Potential soil multifunctionality Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/f3b75767d3104e08a35cd88db0e56a7a
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spelling	oai:doaj.org-article:f3b75767d3104e08a35cd88db0e56a7a2021-12-01T04:32:09ZBacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow1470-160X10.1016/j.ecolind.2020.106996https://doaj.org/article/f3b75767d3104e08a35cd88db0e56a7a2021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20309353https://doaj.org/toc/1470-160XFungal richness and community composition are known to be positively associated with soil multifunctionality. However, the contributions of bacterial and fungal communities to the multiple soil functions of alpine meadow ecosystems have not been widely examined. Here, we surveyed the soil in Qinghai-Tibetan alpine meadows and classified the extent of degradation as undegraded, lightly degraded, moderately degraded, and severely degraded to clarify the associations between microbial diversity (including bacteria and fungi) and potential soil multifunctionality. Bacterial and fungal compositions were detected by sequencing of the 16S rDNA and internal transcribed spacer amplicons, respectively. Functions associated with nutrient cycling (dissolved organic nitrogen and carbon, available phosphorus, NO3–, NH4+, C, N, P-cycle enzymes) and climate regulation (CO2 and N2O emissions) were also examined. Bacterial, rather than fungal, richness was negatively associated with potential soil multifunctionality, which decreased along the degradation gradient. Structural equation modeling explained 79.6% of the variation in potential soil multifunctionality and confirmed that, in addition to bacterial community richness and composition, organic carbon and moisture were important drivers of potential soil multifunctionality. These results suggest that higher bacterial richness is associated with lower potential soil multifunctionality in alpine meadow ecosystems. Among the bacterial taxa, only ~ 12% of bacterial genera were identified as predictors of multifunctionality, suggesting functional redundancy of the bacterial community in the meadow ecosystem. Rhodanobacter, Mucilaginibacter, Rhodococcus, and Bosea, belonging to the Proteobacteria and the Actinobacteria phyla were identified as critical for maintaining potential soil multifunctionality. Our results suggest that bacterial richness is negatively related to potential soil multifunctionality in alpine meadow ecosystems and there is no correlation between potential multifunctionality and fungal richness.Jie WangXiangtao WangGuobin LiuChao ZhangGuoliang WangElsevierarticleAlpine meadowDegradationBacterial diversityPotential soil multifunctionalityEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 106996- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Alpine meadow Degradation Bacterial diversity Potential soil multifunctionality Ecology QH540-549.5
spellingShingle	Alpine meadow Degradation Bacterial diversity Potential soil multifunctionality Ecology QH540-549.5 Jie Wang Xiangtao Wang Guobin Liu Chao Zhang Guoliang Wang Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
description	Fungal richness and community composition are known to be positively associated with soil multifunctionality. However, the contributions of bacterial and fungal communities to the multiple soil functions of alpine meadow ecosystems have not been widely examined. Here, we surveyed the soil in Qinghai-Tibetan alpine meadows and classified the extent of degradation as undegraded, lightly degraded, moderately degraded, and severely degraded to clarify the associations between microbial diversity (including bacteria and fungi) and potential soil multifunctionality. Bacterial and fungal compositions were detected by sequencing of the 16S rDNA and internal transcribed spacer amplicons, respectively. Functions associated with nutrient cycling (dissolved organic nitrogen and carbon, available phosphorus, NO3–, NH4+, C, N, P-cycle enzymes) and climate regulation (CO2 and N2O emissions) were also examined. Bacterial, rather than fungal, richness was negatively associated with potential soil multifunctionality, which decreased along the degradation gradient. Structural equation modeling explained 79.6% of the variation in potential soil multifunctionality and confirmed that, in addition to bacterial community richness and composition, organic carbon and moisture were important drivers of potential soil multifunctionality. These results suggest that higher bacterial richness is associated with lower potential soil multifunctionality in alpine meadow ecosystems. Among the bacterial taxa, only ~ 12% of bacterial genera were identified as predictors of multifunctionality, suggesting functional redundancy of the bacterial community in the meadow ecosystem. Rhodanobacter, Mucilaginibacter, Rhodococcus, and Bosea, belonging to the Proteobacteria and the Actinobacteria phyla were identified as critical for maintaining potential soil multifunctionality. Our results suggest that bacterial richness is negatively related to potential soil multifunctionality in alpine meadow ecosystems and there is no correlation between potential multifunctionality and fungal richness.
format	article
author	Jie Wang Xiangtao Wang Guobin Liu Chao Zhang Guoliang Wang
author_facet	Jie Wang Xiangtao Wang Guobin Liu Chao Zhang Guoliang Wang
author_sort	Jie Wang
title	Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
title_short	Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
title_full	Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
title_fullStr	Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
title_full_unstemmed	Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
title_sort	bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f3b75767d3104e08a35cd88db0e56a7a
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_version_	1718405878704504832

Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow

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