Greater temperature sensitivity of plant phenology at colder sites: implications for convergence across northern latitudes

Prevéy, Janet and Vellend, Mark and Rüger, Nadja and Hollister, Robert D. and Bjorkman, Anne D. and Myers-Smith, Isla H. and Elmendorf, Sarah C. and Clark, Karin and Cooper, Elisabeth J. and Elberling, Bo and Fosaa, Anna M. and Henry, Gregory H. R. and Høye, Toke T. and Jónsdóttir, Ingibjörg S. and Klanderud, Kari and Lévesque, Esther and Mauritz, Marguerite and Molau, Ulf and Natali, Susan M. and Oberbauer, Steven F. and Panchen, Zoe A. and Post, Eric and Rumpf, Sabine B. and Schmidt, Niels M. and Schuur, Edward A. G. and Semenchuk, Phillip R. and Troxler, Tiffany and Welker, Jeffrey M. and Rixen, Christian. (2017) Greater temperature sensitivity of plant phenology at colder sites: implications for convergence across northern latitudes. Global change biology, 23 (7). pp. 2660-2671.

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Warmer temperatures are accelerating the phenology of organisms around the world. Temperature sensitivity of phenology might be greater in colder, higher latitude sites than in warmer regions, in part because small changes in temperature constitute greater relative changes in thermal balance at colder sites. To test this hypothesis, we examined up to 20 years of phenology data for 47 tundra plant species at 18 high-latitude sites along a climatic gradient. Across all species, the timing of leaf emergence and flowering was more sensitive to a given increase in summer temperature at colder than warmer high-latitude locations. A similar pattern was seen over time for the flowering phenology of a widespread species, Cassiope tetragona. These are among the first results highlighting differential phenological responses of plants across a climatic gradient and suggest the possibility of convergence in flowering times and therefore an increase in gene flow across latitudes as the climate warms.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Ökologie (Rumpf)
UniBasel Contributors:Rumpf, Sabine
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:19 May 2022 09:34
Deposited On:19 May 2022 09:34

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