BoucherNicaultArseneaultEtAl2017

Référence

Boucher, E., Nicault, A., Arseneault, D., Begin, Y. and Karami, M.P. (2017) Decadal variations in Eastern Canada's taiga wood biomass production forced by ocean-atmosphere interactions. Scientific Reports, 7(1). (Scopus )

Résumé

Across Eastern Canada (EC), taiga forests represent an important carbon reservoir, but the extent to which climate variability affects this ecosystem over decades remains uncertain. Here, we analyze an extensive network of black spruce (Picea mariana Mill.) ring width and wood density measurements and provide new evidence that wood biomass production is influenced by large-scale, internal ocean-atmosphere processes. We show that while black spruce wood biomass production is primarily governed by growing season temperatures, the Atlantic ocean conveys heat from the subtropics and influences the decadal persistence in taiga forests productivity. Indeed, we argue that 20-30 years periodicities in Sea Surface Temperatures (SSTs) as part of the the Atlantic Multi-decadal Oscillation (AMO) directly influence heat transfers to adjacent lands. Winter atmospheric conditions associated with the North Atlantic Oscillation (NAO) might also impact EC's taiga forests, albeit indirectly, through its effect on SSTs and sea ice conditions in surrounding seas. Our work emphasizes that taiga forests would benefit from the combined effects of a warmer atmosphere and stronger ocean-to-land heat transfers, whereas a weakening of these transfers could cancel out, for decades or longer, the positive effects of climate change on Eastern Canada's largest ecosystem. © The Author(s) 2017.

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@ARTICLE { BoucherNicaultArseneaultEtAl2017,
    AUTHOR = { Boucher, E. and Nicault, A. and Arseneault, D. and Begin, Y. and Karami, M.P. },
    TITLE = { Decadal variations in Eastern Canada's taiga wood biomass production forced by ocean-atmosphere interactions },
    JOURNAL = { Scientific Reports },
    YEAR = { 2017 },
    VOLUME = { 7 },
    NUMBER = { 1 },
    NOTE = { cited By 0 },
    ABSTRACT = { Across Eastern Canada (EC), taiga forests represent an important carbon reservoir, but the extent to which climate variability affects this ecosystem over decades remains uncertain. Here, we analyze an extensive network of black spruce (Picea mariana Mill.) ring width and wood density measurements and provide new evidence that wood biomass production is influenced by large-scale, internal ocean-atmosphere processes. We show that while black spruce wood biomass production is primarily governed by growing season temperatures, the Atlantic ocean conveys heat from the subtropics and influences the decadal persistence in taiga forests productivity. Indeed, we argue that 20-30 years periodicities in Sea Surface Temperatures (SSTs) as part of the the Atlantic Multi-decadal Oscillation (AMO) directly influence heat transfers to adjacent lands. Winter atmospheric conditions associated with the North Atlantic Oscillation (NAO) might also impact EC's taiga forests, albeit indirectly, through its effect on SSTs and sea ice conditions in surrounding seas. Our work emphasizes that taiga forests would benefit from the combined effects of a warmer atmosphere and stronger ocean-to-land heat transfers, whereas a weakening of these transfers could cancel out, for decades or longer, the positive effects of climate change on Eastern Canada's largest ecosystem. © The Author(s) 2017. },
    AFFILIATION = { University du Québec à Montreal, Dépt. of Geography, GEOTOP, Montreal, Canada; ECCOREV, FR 3098, CNRS/Aix-Marseille Université, Europôle Méditerranéen de l'Arbois, BP 80, Aix-en-Provence Cedex 4, France; University du Québec à Rimouski, Dept. of Chemistry, Biology and Geography, Centre d'études nordiques, Rimouski, Canada; Centre Eau Terre Environnement, Institut National de la Recherche Scientifique, Centre d'études nordiques, 490 de la Couronne, Québec, Canada; Dept. of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada; Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden },
    ART_NUMBER = { 2457 },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1038/s41598-017-02580-9 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019752281&doi=10.1038%2fs41598-017-02580-9&partnerID=40&md5=95d478f755c169c35e0ae2816901f382 },
}

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