Survival vs. growth trade-off in early recruitment challenges global warming impacts on Mediterranean mountain trees
Benavides, Raquel (Albert-Ludwigs-Universität Freiburg)
Escudero, Adrián (Universidad Rey Juan Carlos)
Coll, Lluís (Centre Tecnològic Forestal de Catalunya)
Ferrandis, Pablo (Universidad de Castilla-La Mancha. Instituto Botánico)
Gouriveau, Fabrice (Centre Tecnològic Forestal de Catalunya)
Hódar, José Antonio (Universidad de Granada)
Ogaya Inurrigarro, Romà (Centre de Recerca Ecològica i d'Aplicacions Forestals)
García Rabasa, Sonia (Museo Nacional de Ciencias Naturales (Madrid, Espanya))
Granda, Elena (Museo Nacional de Ciencias Naturales (Madrid, Espanya))
Santamaría, Blanca P. (Consejo Superior de Investigaciones Científicas (Espanya). Instituto de Ciencias Agrarias)
Zamora Rodríguez, Regino (Universidad de Granada)
Espelta Morral, Josep Maria (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Valladares, F.. (Museo Nacional de Ciencias Naturales (Madrid, Espanya))

Data:	2015
Resum:	Climate change is expected to alter the geographic distribution of many plant species worldwide. However, there is still no clear evidence showing a generalised direction and magnitude of these distribution shifts. Here, we have surveyed, in nine mountainous regions in Spain, an array of tree species along entire elevational ranges, as surrogates of their global climatic ranges, to test for elevational shifts towards cooler locations. We analysed the distribution recruitment patterns of five dominant tree species, recording the abundance and measuring the primary growth of juveniles in 306 plots. Three of the species have a temperate-boreal distribution with populations at their southern edge in the Mediterranean mountain ranges: Pinus sylvestris, Pinus uncinata and Fagus sylvatica; and the other two species have a Mediterranean distribution: Quercus ilex and Pinus nigra. Despite the contrasting phylogenies and biogeographies, we identified a similar pattern in recruitment abundance across species, with an asymmetric distribution of juveniles (more recruits in the middle-upper elevation of their range), but higher annual growths at lower elevations. This survival-growth trade-off at the early recruitment stage may potentially counterbalance at population level the negative effect of global warming on recruit survival at the lower edge of species ranges. These findings suggest a demographic stabilisation process at the early recruitment stage of these tree species, and highlight the importance of considering the different demographic stages across the whole climatic range to understand the effects that climate change may exert on species distributions and population dynamics.
Ajuts:	European Commission 226299 European Commission 265171 European Commission 301287 Ministerio de Ciencia e Innovación CSD2008-00040 Ministerio de Economía y Competitividad CGL2010-22180-C03-03 Ministerio de Economía y Competitividad CGL2012/38427
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Climate change ; Climatic gradient ; Demographic stabilising processes ; Elevational shift ; Forest regeneration ; Mediterranean forests ; Species distribution
Publicat a:	Perspectives in plant ecology, evolution and systematics, Vol. 17, Issue 5 (Oct. 2015) , p. 369-378, ISSN 1433-8319

DOI: 10.1016/j.ppees.2015.06.004

Post-print 39 p, 1.5 MB

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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)
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