Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality

Abstract In nitrogen (N) limited boreal forests, N enrichment can impact litter decomposition by affecting litter quality and by changing the soil environment where litter decomposes. We investigated the importance of litter quality and soil factors on litter decomposition using a 2-year reciprocal...

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Autores principales:	Nadia I. Maaroufi, Annika Nordin, Kristin Palmqvist, Michael J. Gundale
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7c112cd3388748d980016480b281a028
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spelling	oai:doaj.org-article:7c112cd3388748d980016480b281a0282021-12-02T16:08:12ZNitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality10.1038/s41598-017-04523-w2045-2322https://doaj.org/article/7c112cd3388748d980016480b281a0282017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04523-whttps://doaj.org/toc/2045-2322Abstract In nitrogen (N) limited boreal forests, N enrichment can impact litter decomposition by affecting litter quality and by changing the soil environment where litter decomposes. We investigated the importance of litter quality and soil factors on litter decomposition using a 2-year reciprocal transplant experiment for Picea abies needle litter, derived from plots subjected to 17 years of N addition, including control, low and high N treatments (ambient, 12.5 and 50 kg N ha−1 yr−1, respectively). Our data show that changes in soil factors were the main pathway through which N impacted litter decomposition, with rates reduced by ~15% when placed in high N relative to control plots, regardless of litter origin. Litter decomposition was correlated to soil microbiota, with Picea abies litter decomposition positively correlated with gram negative and fungal functional groups. Our results suggest that previous findings of increase soil C accumulation in response to N deposition is likely to occur as a result of changes in soil microbiota rather than altered litter quality.Nadia I. MaaroufiAnnika NordinKristin PalmqvistMichael J. GundaleNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nadia I. Maaroufi Annika Nordin Kristin Palmqvist Michael J. Gundale Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
description	Abstract In nitrogen (N) limited boreal forests, N enrichment can impact litter decomposition by affecting litter quality and by changing the soil environment where litter decomposes. We investigated the importance of litter quality and soil factors on litter decomposition using a 2-year reciprocal transplant experiment for Picea abies needle litter, derived from plots subjected to 17 years of N addition, including control, low and high N treatments (ambient, 12.5 and 50 kg N ha−1 yr−1, respectively). Our data show that changes in soil factors were the main pathway through which N impacted litter decomposition, with rates reduced by ~15% when placed in high N relative to control plots, regardless of litter origin. Litter decomposition was correlated to soil microbiota, with Picea abies litter decomposition positively correlated with gram negative and fungal functional groups. Our results suggest that previous findings of increase soil C accumulation in response to N deposition is likely to occur as a result of changes in soil microbiota rather than altered litter quality.
format	article
author	Nadia I. Maaroufi Annika Nordin Kristin Palmqvist Michael J. Gundale
author_facet	Nadia I. Maaroufi Annika Nordin Kristin Palmqvist Michael J. Gundale
author_sort	Nadia I. Maaroufi
title	Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
title_short	Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
title_full	Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
title_fullStr	Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
title_full_unstemmed	Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
title_sort	nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7c112cd3388748d980016480b281a028
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_version_	1718384605602512896

Nitrogen enrichment impacts on boreal litter decomposition are driven by changes in soil microbiota rather than litter quality

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