ENSO and NAO affect long-term leaf litter dynamics and stoichiometry of Scots pine and European beech mixedwoods

González de Andrés, Ester; Blanco Vaca, Juan Antonio; Imbert Rodríguez, Bosco; Guan, Biing T.; Lo, Yueh-Hsin; Castillo Martínez, Federico

Publication:
ENSO and NAO affect long-term leaf litter dynamics and stoichiometry of Scots pine and European beech mixedwoods

dc.contributor.author	González de Andrés, Ester
dc.contributor.author	Blanco Vaca, Juan Antonio
dc.contributor.author	Imbert Rodríguez, Bosco
dc.contributor.author	Guan, Biing T.	es_ES
dc.contributor.author	Lo, Yueh-Hsin
dc.contributor.author	Castillo Martínez, Federico
dc.contributor.department	Ciencias	es_ES
dc.contributor.department	Zientziak	eu
dc.date.accessioned	2019-08-03T10:27:54Z
dc.date.available	2020-04-07T23:00:10Z
dc.date.issued	2019
dc.description.abstract	Litterfall dynamics (production, seasonality and nutrient composition) are key factors influencing nutrient cycling. Leaf litter characteristics are modified by species composition, site conditions and water availability. However, significant evidence on how large-scale, global circulation patterns affect ecophysiological processes at tree and ecosystem level remains scarce due to the difficulty in separating the combined influence of different factors on local climate and tree phenology. To fill this gap, we studied links between leaf litter dynamics with climate and other forest processes, such as tree-ring width (TRW) and intrinsic water-use efficiency (iWUE) in two mixtures of Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) in the south-western Pyrenees. Temporal series (18 years) of litterfall production and elemental chemical composition were decomposed following the ensemble empirical mode decomposition (EEMD) method and relationships with local climate, large-scale climatic indices, TRW and Scots pine´s iWUE were assessed. Temporal trends in N:P ratios indicated increasing P-limitation of soil microbes, thus affecting nutrient availability, as the ecological succession from a pine-dominated to a beech-dominated forest took place. A significant influence of large-scale patterns on tree-level ecophysiology was explained through the impact of the North Atlantic Oscillation (NAO) and El Niño – Southern Oscillation (ENSO) on water availability. Positive NAO and negative ENSO were related to dry conditions and, consequently, to early needle shedding and increased N:P ratio of both species. Autumn storm activity appears to be related to premature leaf abscission of European beech. Significant cascading effects from large-scale patterns on local weather influenced pine TRW and iWUE. These variables also responded to leaf stoichiometry fallen three years prior to tree-ring formation. Our results provide evidence of the cascading effect that variability in global climate circulation patterns can have on ecophysiological processes and stand dynamics in mixed forests.	en
dc.description.sponsorship	Ministerio de Economía y Competitividad, Grant/Award Number: AGL2012-33465, AGL2016-76463-P, BES-2013-066705 and RYC-2011-08082; FP7 People: Marie-Curie Actions, Grant/Award Number: CIG-2012-326718-ECOPYREN3; H2020 Marie Skłodowska-Curie Actions, Grant/Award Number: EF-2014-656810-DENDRONUTRIENT.	en
dc.embargo.lift	2020-04-07
dc.embargo.terms	2020-04-07
dc.format.extent	51 p.
dc.format.mimetype	application/pdf	en
dc.identifier.citation	González de Andrés E, Blanco JA, Imbert JB, Guan BT, Lo Y-H, Castillo FJ. ENSO and NAO affect long-term leaf litter dynamics and stoichiometry of Scots pine and European beech mixedwoods. Glob Change Biol. 2019;25:3070–3090. https://doi.org/10.1111/gcb.14672.	en
dc.identifier.doi	10.1111/gcb.14672
dc.identifier.issn	1354-1013 (Print)
dc.identifier.issn	1365-2486 (Electronic)
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/33823
dc.language.iso	eng	en
dc.publisher	Wiley	en
dc.relation.ispartof	Global Change Biology 2019;25:3070–3090	en
dc.relation.projectID	info:eu-repo/grantAgreement/MINECO//AGL2012-33465/ES/	en
dc.relation.projectID	info:eu-repo/grantAgreement/ES/1PE/AGL2016-76463-P	en
dc.relation.projectID	info:eu-repo/grantAgreement/European Commission/FP7/326718	en
dc.relation.projectID	info:eu-repo/grantAgreement/European Commission/Horizon 2020 Framework Programme/656810	en
dc.relation.publisherversion	https://doi.org/10.1111/gcb.14672
dc.rights	© 2019 John Wiley & Sons Ltd.	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.subject	Leaf litter	en
dc.subject	Nutrient cycling	en
dc.subject	Ensemble empirical mode decomposition (EEMD)	en
dc.subject	Nutrient limitation	en
dc.subject	Pyrenees	en
dc.subject	Stoichiometry	en
dc.subject	Structural equation model (SEM)	en
dc.title	ENSO and NAO affect long-term leaf litter dynamics and stoichiometry of Scots pine and European beech mixedwoods	en
dc.type	Artículo / Artikulua	es
dc.type	info:eu-repo/semantics/article	en
dc.type.version	Versión aceptada / Onetsi den bertsioa	es
dc.type.version	info:eu-repo/semantics/acceptedVersion	en
dspace.entity.type	Publication
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