Diverging trends and drivers of Arctic flower production in Greenland over space and time.

Autor: Becker-Scarpitta A; Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland.; Institute of Botany, Czech Academy of Sciences, Brno, Czech Republic.; CIRAD, UMR PVBMT, 97410 Saint Pierre, La Réunion France., Antão LH; Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland., Schmidt NM; Department of Ecoscience, Aarhus University, Roskilde, Denmark.; Arctic Research Centre, Aarhus University, Aarhus, Denmark., Blanchet FG; Département de Biologie, Université de Sherbrooke, Sherbrooke, QC Canada.; Département de Mathématiques, Université de Sherbrooke, Sherbrooke, QC Canada.; Département Des Sciences de La Santé Communautaire, Université de Sherbrooke, Sherbrooke, QC Canada., Kaarlejärvi E; Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland., Raundrup K; Department of Environment and Mineral Resources, Greenland Institute of Natural Resources, Nuuk, Greenland., Roslin T; Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland.; Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland.; Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Jazyk: angličtina
Zdroj: Polar biology [Polar Biol] 2023; Vol. 46 (9), pp. 837-848. Date of Electronic Publication: 2023 Jul 12.
DOI: 10.1007/s00300-023-03164-2
Abstrakt: The Arctic is warming at an alarming rate. While changes in plant community composition and phenology have been extensively reported, the effects of climate change on reproduction remain poorly understood. We quantified multidecadal changes in flower density for nine tundra plant species at a low- and a high-Arctic site in Greenland. We found substantial changes in flower density over time, but the temporal trends and drivers of flower density differed both between species and sites. Total flower density increased over time at the low-Arctic site, whereas the high-Arctic site showed no directional change. Within and between sites, the direction and rate of change differed among species, with varying effects of summer temperature, the temperature of the previous autumn and the timing of snowmelt. Finally, all species showed a strong trade-off in flower densities between successive years, suggesting an effective cost of reproduction. Overall, our results reveal region- and taxon-specific variation in the sensitivity and responses of co-occurring species to shared climatic drivers, and a clear cost of reproductive investment among Arctic plants. The ultimate effects of further changes in climate may thus be decoupled between species and across space, with critical knock-on effects on plant species dynamics, food web structure and overall ecosystem functioning.
Supplementary Information: The online version contains supplementary material available at 10.1007/s00300-023-03164-2.
Competing Interests: Conflict of interestThe authors declare no conflict of interest.
(© The Author(s) 2023.)
Databáze: MEDLINE
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