DawesHagedornZumbrunnEtAl2011

Reference

Dawes, M.A., Hagedorn, F., Zumbrunn, T., Handa, I.T., Hattenschwiler, S., Wipf, S. and Rixen, C. (2011) Growth and community responses of alpine dwarf shrubs to in situ CO 2 enrichment and soil warming. New Phytologist, 191(3):806-818. (Scopus )

Abstract

Rising CO 2 concentrations and the associated global warming are expected to have large impacts on high-elevation ecosystems, yet long-term multifactor experiments in these environments are rare. We investigated how growth of dominant dwarf shrub species (Vaccinium myrtillus, Vaccinium gaultherioides and Empetrum hermaphroditum) and community composition in the understorey of larch and pine trees responded to 9yr of CO 2 enrichment and 3yr of soil warming at the treeline in the Swiss Alps. Vaccinium myrtillus was the only species that showed a clear positive effect of CO 2 on growth, with no decline over time in the annual shoot growth response. Soil warming stimulated V. myrtillus growth even more than elevated CO 2 and was accompanied by increased plant-available soil nitrogen (N) and leaf N concentrations. Growth of Vaccinium gaultherioides and E. hermaphroditum was not influenced by warming. Vascular plant species richness declined in elevated CO 2 plots with larch, while the number of moss and lichen species decreased under warming. Ongoing environmental change could lead to less diverse plant communities and increased dominance of the particularly responsive V. myrtillus in the studied alpine treeline. These changes are the consequence of independent CO 2 and soil warming effects, a result that should facilitate predictive modelling approaches. © 2011 WSL Institute for Snow and Avalanche Research SLF. New Phytologist © 2011 New Phytologist Trust.

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@ARTICLE { DawesHagedornZumbrunnEtAl2011,
    AUTHOR = { Dawes, M.A. and Hagedorn, F. and Zumbrunn, T. and Handa, I.T. and Hattenschwiler, S. and Wipf, S. and Rixen, C. },
    TITLE = { Growth and community responses of alpine dwarf shrubs to in situ CO 2 enrichment and soil warming },
    JOURNAL = { New Phytologist },
    YEAR = { 2011 },
    VOLUME = { 191 },
    PAGES = { 806-818 },
    NUMBER = { 3 },
    NOTE = { cited By (since 1996) 2 },
    ABSTRACT = { Rising CO 2 concentrations and the associated global warming are expected to have large impacts on high-elevation ecosystems, yet long-term multifactor experiments in these environments are rare. We investigated how growth of dominant dwarf shrub species (Vaccinium myrtillus, Vaccinium gaultherioides and Empetrum hermaphroditum) and community composition in the understorey of larch and pine trees responded to 9yr of CO 2 enrichment and 3yr of soil warming at the treeline in the Swiss Alps. Vaccinium myrtillus was the only species that showed a clear positive effect of CO 2 on growth, with no decline over time in the annual shoot growth response. Soil warming stimulated V. myrtillus growth even more than elevated CO 2 and was accompanied by increased plant-available soil nitrogen (N) and leaf N concentrations. Growth of Vaccinium gaultherioides and E. hermaphroditum was not influenced by warming. Vascular plant species richness declined in elevated CO 2 plots with larch, while the number of moss and lichen species decreased under warming. Ongoing environmental change could lead to less diverse plant communities and increased dominance of the particularly responsive V. myrtillus in the studied alpine treeline. These changes are the consequence of independent CO 2 and soil warming effects, a result that should facilitate predictive modelling approaches. © 2011 WSL Institute for Snow and Avalanche Research SLF. New Phytologist © 2011 New Phytologist Trust. },
    AUTHOR_KEYWORDS = { Alpine treeline; Dwarf shrub; Elevated CO 2 ; Empetrum hermaphroditum (crowberry); Free air CO 2 enrichment (FACE); Soil warming; Vaccinium gaultherioides (northern bilberry); Vaccinium myrtillus (bilberry) },
    CODEN = { NEPHA },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/j.1469-8137.2011.03722.x },
    ISSN = { 0028646X },
    KEYWORDS = { alpine environment; atmospheric chemistry; bioaccumulation; carbon dioxide enrichment; community composition; community response; coniferous tree; dominance; ecological modeling; elevation; environmental change; experimental study; growth response; in situ measurement; lichen; moss; shrub; soil nitrogen; soil temperature; species diversity; species richness; treeline; understory; warming, Alps; Switzerland, Bryophyta; Empetrum; Empetrum hermaphroditum; Larix; Tracheophyta; Vaccinium; Vaccinium myrtillus },
    OWNER = { Luc },
    SOURCE = { Scopus },
    TIMESTAMP = { 2012.05.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-79960553403&partnerID=40&md5=9d6a4802dc71d15fc77276e5465004fd },
}

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