AussenacBergeronGhotsaMekontchouEtAl2017

Référence

Aussenac, R., Bergeron, Y., Ghotsa Mekontchou, C., Gravel, D., Pilch, K. and Drobyshev, I. (2017) Intraspecific variability in growth response to environmental fluctuations modulates the stabilizing effect of species diversity on forest growth. Journal of Ecology, 105(4):1010-1020. (Scopus )

Résumé

Differences between species in their response to environmental fluctuations cause asynchronized growth series, suggesting that species diversity may help communities buffer the effects of environmental fluctuations. However, within-species variability of responses may impact the stabilizing effect of growth asynchrony. We used tree ring data to investigate the diversity–stability relationship and its underlying mechanisms within the temperate and boreal mixed woods of Eastern Canada. We worked at the individual tree level to take into account the intraspecific variability of responses to environmental fluctuations. We found that species diversity stabilized growth in forest ecosystems. The asynchrony of species’ response to climatic fluctuations and to insect outbreaks explained this effect. We also found that the intraspecific variability of responses to environmental fluctuations was high, making the stabilizing effect of diversity highly variable. Synthesis. Our results are consistent with previous studies suggesting that the asynchrony of species’ response to environmental fluctuations drives the stabilizing effect of diversity. The intraspecific variability of these responses modulates the stabilizing effect of species diversity. Interactions between individuals, variation in tree size and spatial heterogeneity of environmental conditions could play a critical role in the stabilizing effect of diversity. © 2016 The Authors. Journal of Ecology © 2016 British Ecological Society

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@ARTICLE { AussenacBergeronGhotsaMekontchouEtAl2017,
    AUTHOR = { Aussenac, R. and Bergeron, Y. and Ghotsa Mekontchou, C. and Gravel, D. and Pilch, K. and Drobyshev, I. },
    TITLE = { Intraspecific variability in growth response to environmental fluctuations modulates the stabilizing effect of species diversity on forest growth },
    JOURNAL = { Journal of Ecology },
    YEAR = { 2017 },
    VOLUME = { 105 },
    NUMBER = { 4 },
    PAGES = { 1010-1020 },
    NOTE = { cited By 2 },
    ABSTRACT = { Differences between species in their response to environmental fluctuations cause asynchronized growth series, suggesting that species diversity may help communities buffer the effects of environmental fluctuations. However, within-species variability of responses may impact the stabilizing effect of growth asynchrony. We used tree ring data to investigate the diversity–stability relationship and its underlying mechanisms within the temperate and boreal mixed woods of Eastern Canada. We worked at the individual tree level to take into account the intraspecific variability of responses to environmental fluctuations. We found that species diversity stabilized growth in forest ecosystems. The asynchrony of species’ response to climatic fluctuations and to insect outbreaks explained this effect. We also found that the intraspecific variability of responses to environmental fluctuations was high, making the stabilizing effect of diversity highly variable. Synthesis. Our results are consistent with previous studies suggesting that the asynchrony of species’ response to environmental fluctuations drives the stabilizing effect of diversity. The intraspecific variability of these responses modulates the stabilizing effect of species diversity. Interactions between individuals, variation in tree size and spatial heterogeneity of environmental conditions could play a critical role in the stabilizing effect of diversity. © 2016 The Authors. Journal of Ecology © 2016 British Ecological Society },
    AFFILIATION = { Chaire Industrielle CRSNG-UQAT-UQAM en Aménagement Forestier Durable, Institut de Recherche Sur Les Forêts, Université du Québec en Abitibi-Témiscamingue (UQAT), 445 boul. de l'Université, Rouyn-Noranda, QC, Canada; Chaire de Recherche en écologie Intégrative, Département de Biologie, Faculté Des Sciences, Université de Sherbrooke, 2500 Boulevard Université, Sherbrooke, QC, Canada; Faculty of Biology and Agriculture, University of Rzeszów, Agroecology Dept., ul. Ćwiklińskiej 1A, Rzeszów, Poland; Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, P.O. Box 49, Alnarp, Sweden },
    AUTHOR_KEYWORDS = { biodiversity; dendrochronology; growth asynchrony; plant population and community dynamics; plant–climate interactions; plant–herbivore interactions; plant–plant interactions; tree growth },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/1365-2745.12728 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011266612&doi=10.1111%2f1365-2745.12728&partnerID=40&md5=6c19f4313950dcd62718fc5f1bcbbbc7 },
}

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