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

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dc.contributor.authorBlanco Vaca, Juan Antonio
dc.contributor.authorDurán Lázaro, María
dc.contributor.authorLuquin, Josu
dc.contributor.authorSan Emeterio Garciandía, Leticia
dc.contributor.authorYeste Yeste, Antonio
dc.contributor.authorCanals Tresserras, Rosa María
dc.contributor.departmentAgronomía, Biotecnología y Alimentaciónes_ES
dc.contributor.departmentAgronomia, Bioteknologia eta Elikaduraeu
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Multidisciplinary Research in Applied Biology - IMABen
dc.contributor.departmentInstitute on Innovation and Sustainable Development in Food Chain - ISFOODen
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2023-05-24T13:16:30Z
dc.date.available2023-05-24T13:16:30Z
dc.date.issued2023
dc.date.updated2023-05-24T13:07:09Z
dc.description.abstractSoils 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.en
dc.description.sponsorshipThis 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.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBlanco, J. A., Durán, M., Luquin, J., San Emeterio, L., Yeste, A., & Canals, R. M. (2023). Soil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystems. Science of The Total Environment, 888, 164118. https://doi.org/10.1016/j.scitotenv.2023.164118en
dc.identifier.doi10.1016/j.scitotenv.2023.164118
dc.identifier.issn0048-9697
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/45334
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofScience of the Total Environment 888 (2023) 164118en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI//AGL2016-76035-C2/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116786RB-C32/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI//BES-2017-080326/
dc.relation.publisherversionhttps://doi.org/10.1016/j.scitotenv.2023.164118
dc.rights© 2023 The Authors. This is an open access article under the CC BY-NC license.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectSoil carbonen
dc.subjectSoil organic matteren
dc.subjectDecomposition ratesen
dc.subjectStabilization factoren
dc.subjectCarbon fluxesen
dc.subjectTea Bag Indexen
dc.titleSoil C/N ratios cause opposing effects in forests compared to grasslands on decomposition rates and stabilization factors in southern European ecosystemsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
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