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dc.contributor.authorParker, Thomasen_UK
dc.contributor.authorTang, Jianwuen_UK
dc.contributor.authorClark, Mahalia Ben_UK
dc.contributor.authorMoody, Michael Men_UK
dc.contributor.authorFetcher, Neden_UK
dc.description.abstractEriophorum vaginatum is a tussock-forming sedge that contributes significantly to the structure and primary productivity of moist acidic tussock tundra. Locally adapted populations (ecotypes) have been identified across the geographical distribution of E. vaginatum; however, little is known about how their growth and phenology differ over the course of a growing season. The growing season is short in the Arctic and therefore exerts a strong selection pressure on tundra species. This raises the hypothesis that the phenology of arctic species may be poorly adapted if the timing and length of the growing season change. Mature E. vaginatum tussocks from across a latitudinal gradient (65–70°N) were transplanted into a common garden at a central location (Toolik Lake, 68°38′N, 149°36′W) where half were warmed using open-top chambers. Over two growing seasons (2015 and 2016), leaf length was measured weekly to track growth rates, timing of senescence, and biomass accumulation. Growth rates were similar across ecotypes and between years and were not affected by warming. However, southern populations accumulated significantly more biomass, largely because they started to senesce later. In 2016, peak biomass and senescence of most populations occurred later than in 2015, probably induced by colder weather at the beginning of the growing season in 2016, which caused a delayed start to growth. The finish was delayed as well. Differences in phenology between populations were largely retained between years, suggesting that the amount of time that these ecotypes grow has been selected by the length of the growing seasons at their respective home sites. As potential growing seasons lengthen, E. vaginatum may be unable to respond appropriately as a result of genetic control and may have reduced fitness in the rapidly warming Arctic tundra.en_UK
dc.relationParker T, Tang J, Clark MB, Moody MM & Fetcher N (2017) Ecotypic differences in the phenology of the tundra species Eriophorum vaginatum reflect sites of origin. Ecology and Evolution, 7 (22), pp. 9775-9786.
dc.rights© 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_UK
dc.subjectArctic tundraen_UK
dc.subjectcommon gardenen_UK
dc.subjectEriophorum vaginatumen_UK
dc.subjectgrowing season lengthen_UK
dc.subjectlocal adaptationen_UK
dc.titleEcotypic differences in the phenology of the tundra species Eriophorum vaginatum reflect sites of originen_UK
dc.typeJournal Articleen_UK
dc.citation.jtitleEcology and Evolutionen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.funderNational Science Foundationen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationMarine Biological Laboratoryen_UK
dc.contributor.affiliationMarine Biological Laboratoryen_UK
dc.contributor.affiliationUniversity of Texas, El Pasoen_UK
dc.contributor.affiliationWilkes Universityen_UK
dc.description.refREF Compliant by Deposit in Stirling's Repositoryen_UK
Appears in Collections:Biological and Environmental Sciences Journal Articles

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