Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations

Soil microorganisms are key regulators of soil carbon (C) and nutrients cycles in terrestrial ecosystems. However, it remains uncertain how the inter-annual variation in soil microbial community corresponds well with resource availability in the changing environment. Here, we investigated soil micro...

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Autores principales:	Junjun Wu, Wei Jia, Dandan Zhang, Guihua Liu, Xiaoli Cheng
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Detritus input manipulations Environmental variables Inter-annual variation Microbial community structure Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/37d1c81638bf42da8af3053b6a77aac6
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spelling	oai:doaj.org-article:37d1c81638bf42da8af3053b6a77aac62021-12-01T04:58:32ZCase study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations1470-160X10.1016/j.ecolind.2021.108053https://doaj.org/article/37d1c81638bf42da8af3053b6a77aac62021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007184https://doaj.org/toc/1470-160XSoil microorganisms are key regulators of soil carbon (C) and nutrients cycles in terrestrial ecosystems. However, it remains uncertain how the inter-annual variation in soil microbial community corresponds well with resource availability in the changing environment. Here, we investigated soil microbial community structure and abundance, as well as the associated environmental variables from 2015 to 2017 under different plant detritus input manipulation treatments in a coniferous (Platycladus orientalis (Linn.) Franco) plantation forest ecosystem in subtropical China. Our results showed that the inter-annual variation in soil microbial community was more visible than that caused by detritus input manipulations, owing to the temporal alterations in microclimates and substrate availability. Both aboveground litter removal and root exclusion had more negative effects on the bacterial PLFAs than fungi except half a year after detritus input manipulations. While, soil microbial abundance increased only after three years of litter addition compared to control. Litter removal, especially the no input treatment significantly increased the fungi to bacteria (F:B) and Gram-positive to Gram-negative bacteria (GP:GN) ratios after one and two years of detritus input manipulations. Whereas, the litter addition treatment had minor effects on these parameters. A clear discrimination of microbial community structure among the different detritus input manipulations appeared after two and three years. Both the F:B and GP:GN ratios were positively related to the carbon to nitrogen (C:N) ratio, recalcitrance index of carbon (RIC) and nitrogen (RIN). Overall, our results reveal that the inter-annual variations in soil microbial community are clearly differentiated by the environmental variables and substrate availability that occur in different years and detritus input manipulations. Our results also suggest that due to the vital role of microorganisms in biogeochemical cycling, shifts in the microbial community structure with altered plant detritus input could profoundly affect ecosystem processes in the long run.Junjun WuWei JiaDandan ZhangGuihua LiuXiaoli ChengElsevierarticleDetritus input manipulationsEnvironmental variablesInter-annual variationMicrobial community structureEcologyQH540-549.5ENEcological Indicators, Vol 130, Iss , Pp 108053- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Detritus input manipulations Environmental variables Inter-annual variation Microbial community structure Ecology QH540-549.5
spellingShingle	Detritus input manipulations Environmental variables Inter-annual variation Microbial community structure Ecology QH540-549.5 Junjun Wu Wei Jia Dandan Zhang Guihua Liu Xiaoli Cheng Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
description	Soil microorganisms are key regulators of soil carbon (C) and nutrients cycles in terrestrial ecosystems. However, it remains uncertain how the inter-annual variation in soil microbial community corresponds well with resource availability in the changing environment. Here, we investigated soil microbial community structure and abundance, as well as the associated environmental variables from 2015 to 2017 under different plant detritus input manipulation treatments in a coniferous (Platycladus orientalis (Linn.) Franco) plantation forest ecosystem in subtropical China. Our results showed that the inter-annual variation in soil microbial community was more visible than that caused by detritus input manipulations, owing to the temporal alterations in microclimates and substrate availability. Both aboveground litter removal and root exclusion had more negative effects on the bacterial PLFAs than fungi except half a year after detritus input manipulations. While, soil microbial abundance increased only after three years of litter addition compared to control. Litter removal, especially the no input treatment significantly increased the fungi to bacteria (F:B) and Gram-positive to Gram-negative bacteria (GP:GN) ratios after one and two years of detritus input manipulations. Whereas, the litter addition treatment had minor effects on these parameters. A clear discrimination of microbial community structure among the different detritus input manipulations appeared after two and three years. Both the F:B and GP:GN ratios were positively related to the carbon to nitrogen (C:N) ratio, recalcitrance index of carbon (RIC) and nitrogen (RIN). Overall, our results reveal that the inter-annual variations in soil microbial community are clearly differentiated by the environmental variables and substrate availability that occur in different years and detritus input manipulations. Our results also suggest that due to the vital role of microorganisms in biogeochemical cycling, shifts in the microbial community structure with altered plant detritus input could profoundly affect ecosystem processes in the long run.
format	article
author	Junjun Wu Wei Jia Dandan Zhang Guihua Liu Xiaoli Cheng
author_facet	Junjun Wu Wei Jia Dandan Zhang Guihua Liu Xiaoli Cheng
author_sort	Junjun Wu
title	Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
title_short	Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
title_full	Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
title_fullStr	Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
title_full_unstemmed	Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
title_sort	case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/37d1c81638bf42da8af3053b6a77aac6
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Case study on a coniferous plantation site about inter-annual shifts in microbial communities under short-term detritus input manipulations

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