Per citar aquest document: http://ddd.uab.cat/record/126956
Direct and indirect effects of climate on demography and early growth of pinus sylvestris at the rear edge: changing roles of biotic and abiotic factors
Benavides, Raquel (Museo Nacional de Ciencias Naturales (Espanya). Departmento de Biogeografía y Cambio Global)
García Rabasa, Sonia (Museo Nacional de Ciencias Naturales (Espanya). Departmento de Biogeografía y Cambio Global)
Granda, Elena (Museo Nacional de Ciencias Naturales (Espanya). Departmento de Biogeografía y Cambio Global)
Escudero, Adrián (Universidad Rey Juan Carlos. Área de Biodiversidad y Conservación)
Hódar, José A. (Universidad de Granada. Departamento de Ecología)
Martínez Vilalta, Jordi, 1975- (Centre de Recerca Ecològica i Aplicacions Forestals)
Rincón Herranz, Ana M. (Consejo Superior de Investigaciones Científicas (Espanya). Instituto de Ciencias Agrarias)
Zamora Rodríguez, Regino (Universidad Rey Juan Carlos. Área de Biodiversidad y Conservación)
Valladares Ros, Fernando (Museo Nacional de Ciencias Naturales (Espanya). Departmento de Biogeografía y Cambio Global)

Data: 2013
Resum: Global change triggers shifts in forest composition, with warming and aridification being particularly threatening for the populations located at the rear edge of the species distributions. This is the case of Scots pine (Pinus sylvestris) in the Mediterranean Basin where uncertainties in relation to its dynamics under these changing scenarios are still high. We analysed the relative effect of climate on the recruitment patterns of Scots pine and its interactions with local biotic and abiotic variables at different spatial scales. Number of seedlings and saplings was surveyed, and their annual shoot growth measured in 96 plots located across altitudinal gradients in three different regions in the Iberian Peninsula. We found a significant influence of climate on demography and performance of recruits, with a non-linear effect of temperature on the presence of juveniles, and a positive effect of precipitation on their survival. Abundance of juveniles of P. sylvestris that underwent their first summer drought was skewed towards higher altitudes than the altitudinal mean range of the conspecific adults and the optimum elevation for seedlings' emergence. At local level, light availability did not influence juveniles' density, but it enhanced their growth. Biotic interactions were found between juveniles and the herb cover (competition) and between the number of newly emerged seedlings and shrubs (facilitation). Results also highlighted the indirect effect that climate exerts over the local factors, modulating the interactions with the pre-existing vegetation that were more evident at more stressful sites. This multiscale approach improves our understanding of the dynamics of these marginal populations and some management criteria can be inferred to boost their conservation under the current global warming.
Nota: Número d'acord de subvenció EC/FP7/226299
Nota: Número d'acord de subvenció EC/FP7/265171
Nota: Número d'acord de subvenció MICINN/CSD2008_00040
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: article ; recerca ; publishedVersion
Matèria: Climate ; Demography ; Pinus sylvestris
Publicat a: PLoS ONE, Vol. 8, Issue 3 (March 2013) , p. e59824, ISSN 1932-6203

DOI: 10.1371/journal.pone.0059824


10 p, 1.5 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2014-12-12, darrera modificació el 2016-12-05



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