Potential for evolutionary responses to climate change evidence from tree populations
ALBERTO, Florian
Biodiversité, Gènes & Communautés [BioGeCo]
Department of Biology and Biocenter Oulu
Biodiversité, Gènes & Communautés [BioGeCo]
Department of Biology and Biocenter Oulu
AITKEN, Sally N.
Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
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Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
ALBERTO, Florian
Biodiversité, Gènes & Communautés [BioGeCo]
Department of Biology and Biocenter Oulu
Biodiversité, Gènes & Communautés [BioGeCo]
Department of Biology and Biocenter Oulu
AITKEN, Sally N.
Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
YEAMAN, Sam
Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
Université de Neuchâtel = University of Neuchatel [UNINE]
< Réduire
Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics
Université de Neuchâtel = University of Neuchatel [UNINE]
Langue
en
Article de revue
Ce document a été publié dans
Global Change Biology. 2013, vol. 19, n° 6, p. 1645-1661
Wiley
Résumé en anglais
Evolutionary responses are required for tree populations to be able to track climate change. Results of 250years of common garden experiments show that most forest trees have evolved local adaptation, as evidenced by the ...Lire la suite >
Evolutionary responses are required for tree populations to be able to track climate change. Results of 250years of common garden experiments show that most forest trees have evolved local adaptation, as evidenced by the adaptive differentiation of populations in quantitative traits, reflecting environmental conditions of population origins. On the basis of the patterns of quantitative variation for 19 adaptation-related traits studied in 59 tree species (mostly temperate and boreal species from the Northern hemisphere), we found that genetic differentiation between populations and clinal variation along environmental gradients were very common (respectively, 90% and 78% of cases). Thus, responding to climate change will likely require that the quantitative traits of populations again match their environments. We examine what kind of information is needed for evaluating the potential to respond, and what information is already available. We review the genetic models related to selection responses, and what is known currently about the genetic basis of the traits. We address special problems to be found at the range margins, and highlight the need for more modeling to understand specific issues at southern and northern margins. We need new common garden experiments for less known species. For extensively studied species, new experiments are needed outside the current ranges. Improving genomic information will allow better prediction of responses. Competitive and other interactions within species and interactions between species deserve more consideration. Despite the long generation times, the strong background in quantitative genetics and growing genomic resources make forest trees useful species for climate change research. The greatest adaptive response is expected when populations are large, have high genetic variability, selection is strong, and there is ecological opportunity for establishment of better adapted genotypes.< Réduire
Mots clés
adaptive traits
local adaptation
quantitative genetics
Mots clés en anglais
conifers
natural selection
phenotypic plasticity
provenance trials
Origine
Importé de halUnités de recherche