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Potential forevolutionaryresponses to climatechange – evidencefrom tree populations Florian J. AlbertoSally N. AitkenRicardo Alı́a2013 год

Potential for evolutionary responses to climate change – evidence from tree populations
review

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Аннотация: Evolutionary responses are required for tree populations to be able to track climate change. Results of 250 years 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.
Год издания: 2013
Авторы: Florian J. Alberto, Sally N. Aitken, Ricardo Alı́a, Santiago C. González‐Martínez, Heikki Hänninen, Antoine Kremer, François Lefèvre, Thomas Lenormand, Sam Yeaman, Ross Whetten, Outi Savolainen
Издательство: Wiley
Источник: Global Change Biology
Ключевые слова: Species Distribution and Climate Change, Plant and animal studies, Genetic diversity and population structure
Другие ссылки: Global Change Biology (HTML)
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