Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems

Soils store an important amount of carbon (C), mostly in the form of organic matter in different decomposing stages. Hence, understanding the factors that rule the rates at which decomposed organic matter is incorporated into the soil is paramount to better understand how C stocks will vary under ch...

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Autores: Blanco Vaca, Juan Antonio, Durán Lázaro, María, Luquin, Josu, San Emeterio Garciandía, Leticia, Yeste Yeste, Antonio, Canals Tresserras, Rosa María
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/45334
Acceso en línea:https://hdl.handle.net/2454/45334
Access Level:acceso abierto
Palabra clave:Soil carbon
Soil organic matter
Decomposition rates
Stabilization factor
Carbon fluxes
Tea Bag Index
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spelling Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystemsBlanco Vaca, Juan AntonioDurán Lázaro, MaríaLuquin, JosuSan Emeterio Garciandía, LeticiaYeste Yeste, AntonioCanals Tresserras, Rosa MaríaSoil carbonSoil organic matterDecomposition ratesStabilization factorCarbon fluxesTea Bag IndexSoils store an important amount of carbon (C), mostly in the form of organic matter in different decomposing stages. Hence, understanding the factors that rule the rates at which decomposed organic matter is incorporated into the soil is paramount to better understand how C stocks will vary under changing atmospheric and land use conditions. We studied the interactions between vegetation cover, climate and soil factors using the Tea Bag Index in 16 different ecosystems (eight forests, eight grasslands) along two contrasting gradients in the Spanish province of Navarre (SW Europe). Such arrangement encompassed a range of four climate types, elevations from 80 to 1420 m.a.s.l., and precipitation (P) from 427 to 1881 mm year–1. After incubating tea bags during the spring of 2017, we identified strong interactions between vegetation cover type, soil C/N and precipitation affecting decomposition rates and stabilization factors. In both forests and grasslands, increasing precipitation increased decomposition rates (k) but also the litter stabilization factor (S). In forests, however, increasing the soil C/N ratio raised decomposition rates and the litter stabilization factor, while in grasslands higher C/N ratios caused the opposite effects. In addition, soil pH and N also affected decomposition rates positively, but for these factors no differences between ecosystem types were found. Our results demonstrate that soil C flows are altered by complex site-dependent and site-independent environmental factors, and that increased ecosystem lignification will significantly change C flows, likely increasing decomposition rates in the short term but also increasing the inhibiting factors that stabilize labile litter compounds.This work was supported by the Public University of Navarre; the Spanish Ministry of Science [grant numbers AGL2016-76035-C2, PID2020-116786RB-C32] and the Spanish Ministry of Economy and Competitiveness [grant BES-2017-080326]. Open access funding provided by the Public University of Navarre.ElsevierAgronomía, Biotecnología y AlimentaciónCienciasAgronomia, Bioteknologia eta ElikaduraZientziakInstitute for Multidisciplinary Research in Applied Biology - IMABInstitute on Innovation and Sustainable Development in Food Chain - ISFOODUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/45334reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/AEI//AGL2016-76035-C2info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116786RB-C32info:eu-repo/grantAgreement/AEI//BES-2017-080326© 2023 The Authors. This is an open access article under the CC BY-NC license.https://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/453342026-06-17T12:41:47Z
dc.title.none.fl_str_mv Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
title Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
spellingShingle Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
Blanco Vaca, Juan Antonio
Soil carbon
Soil organic matter
Decomposition rates
Stabilization factor
Carbon fluxes
Tea Bag Index
title_short Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
title_full Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
title_fullStr Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
title_full_unstemmed Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
title_sort Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems
dc.creator.none.fl_str_mv Blanco Vaca, Juan Antonio
Durán Lázaro, María
Luquin, Josu
San Emeterio Garciandía, Leticia
Yeste Yeste, Antonio
Canals Tresserras, Rosa María
author Blanco Vaca, Juan Antonio
author_facet Blanco Vaca, Juan Antonio
Durán Lázaro, María
Luquin, Josu
San Emeterio Garciandía, Leticia
Yeste Yeste, Antonio
Canals Tresserras, Rosa María
author_role author
author2 Durán Lázaro, María
Luquin, Josu
San Emeterio Garciandía, Leticia
Yeste Yeste, Antonio
Canals Tresserras, Rosa María
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Agronomía, Biotecnología y Alimentación
Ciencias
Agronomia, Bioteknologia eta Elikadura
Zientziak
Institute for Multidisciplinary Research in Applied Biology - IMAB
Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.subject.none.fl_str_mv Soil carbon
Soil organic matter
Decomposition rates
Stabilization factor
Carbon fluxes
Tea Bag Index
topic Soil carbon
Soil organic matter
Decomposition rates
Stabilization factor
Carbon fluxes
Tea Bag Index
description Soils store an important amount of carbon (C), mostly in the form of organic matter in different decomposing stages. Hence, understanding the factors that rule the rates at which decomposed organic matter is incorporated into the soil is paramount to better understand how C stocks will vary under changing atmospheric and land use conditions. We studied the interactions between vegetation cover, climate and soil factors using the Tea Bag Index in 16 different ecosystems (eight forests, eight grasslands) along two contrasting gradients in the Spanish province of Navarre (SW Europe). Such arrangement encompassed a range of four climate types, elevations from 80 to 1420 m.a.s.l., and precipitation (P) from 427 to 1881 mm year–1. After incubating tea bags during the spring of 2017, we identified strong interactions between vegetation cover type, soil C/N and precipitation affecting decomposition rates and stabilization factors. In both forests and grasslands, increasing precipitation increased decomposition rates (k) but also the litter stabilization factor (S). In forests, however, increasing the soil C/N ratio raised decomposition rates and the litter stabilization factor, while in grasslands higher C/N ratios caused the opposite effects. In addition, soil pH and N also affected decomposition rates positively, but for these factors no differences between ecosystem types were found. Our results demonstrate that soil C flows are altered by complex site-dependent and site-independent environmental factors, and that increased ecosystem lignification will significantly change C flows, likely increasing decomposition rates in the short term but also increasing the inhibiting factors that stabilize labile litter compounds.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/45334
url https://hdl.handle.net/2454/45334
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI//AGL2016-76035-C2
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116786RB-C32
info:eu-repo/grantAgreement/AEI//BES-2017-080326
dc.rights.none.fl_str_mv © 2023 The Authors. This is an open access article under the CC BY-NC license.
https://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2023 The Authors. This is an open access article under the CC BY-NC license.
https://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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