TobnerPaquetteGravelEtAl2016

Reference

Tobner, C.M., Paquette, A., Gravel, D., Reich, P.B., Williams, L.J., Messier, C. (2016) Functional identity is the main driver of diversity effects in young tree communities. Ecology Letters, 19(6):638-647. (URL )

Abstract

Two main effects are proposed to explain biodiversity-ecosystem functioning relationships: niche complementarity and selection effects. Both can be functionally defined using the functional diversity (FD) and functional identity (FI) of the community respectively. Herein, we present results from the first tree diversity experiment that separated the effect of selection from that of complementarity by varying community composition in high-density plots along a gradient of FD, independent of species richness and testing for the effects of FD and community weighted means of traits (a proxy for FI) on stem biomass increment (a proxy for productivity). After 4 years of growth, most mixtures did not differ in productivity from the averages of their respective monocultures, but some did overyield significantly. Those positive diversity effects resulted mostly from selection effects, primarily driven by fast-growing deciduous species and associated traits. Net diversity effect did not increase with time over 4 years.

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@ARTICLE { TobnerPaquetteGravelEtAl2016,
    TITLE = { Functional identity is the main driver of diversity effects in young tree communities },
    AUTHOR = { Tobner, C.M. and Paquette, A. and Gravel, D. and Reich, P.B. and Williams, L.J. and Messier, C. },
    JOURNAL = { Ecology Letters },
    YEAR = { 2016 },
    NUMBER = { 6 },
    PAGES = { 638--647 },
    VOLUME = { 19 },
    ABSTRACT = { Two main effects are proposed to explain biodiversity-ecosystem functioning relationships: niche complementarity and selection effects. Both can be functionally defined using the functional diversity (FD) and functional identity (FI) of the community respectively. Herein, we present results from the first tree diversity experiment that separated the effect of selection from that of complementarity by varying community composition in high-density plots along a gradient of FD, independent of species richness and testing for the effects of FD and community weighted means of traits (a proxy for FI) on stem biomass increment (a proxy for productivity). After 4 years of growth, most mixtures did not differ in productivity from the averages of their respective monocultures, but some did overyield significantly. Those positive diversity effects resulted mostly from selection effects, primarily driven by fast-growing deciduous species and associated traits. Net diversity effect did not increase with time over 4 years. },
    DOI = { 10.1111/ele.12600 },
    ISSN = { 1461-0248 },
    KEYWORDS = { Biodiversity and ecosystem functioning, biodiversity experiment, complementarity, functional diversity, functional identity, functional traits of trees, IDENT, overyielding },
    OWNER = { DanielLesieur },
    TIMESTAMP = { 2016.05.30 },
    URL = { http://dx.doi.org/10.1111/ele.12600 },
}

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