DorangevilleHouleDuchesneEtAl2018

Référence

D'Orangeville, L., Houle, D., Duchesne, L., Phillips, R.P., Bergeron, Y. and Kneeshaw, D.D. (2018) Beneficial effects of climate warming on boreal tree growth may be transitory. Nature Communications, 9:3213. (URL )

Résumé

Predicted increases in temperature and aridity across the boreal forest region have the potential to alter timber supply and carbon sequestration. Given the widely-observed variation in species sensitivity to climate, there is an urgent need to develop species-specific predictive models that can account for local conditions. Here, we matched the growth of 270,000 trees across a 761,100 km2 region with detailed site-level data to quantify the growth responses of the seven most common boreal tree species in Eastern Canada to changes in climate. Accounting for spatially-explicit species-specific responses, we find that while 2 °C of warming may increase overall forest productivity by 13 ± 3% (mean ± SE) in the absence of disturbance, additional warming could reverse this trend and lead to substantial declines exacerbated by reductions in water availability. Our results confirm the transitory nature of warming-induced growth benefits in the boreal forest and highlight the vulnerability of the ecosystem to excess warming and drying.

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@ARTICLE { DorangevilleHouleDuchesneEtAl2018,
    TITLE = { Beneficial effects of climate warming on boreal tree growth may be transitory },
    AUTHOR = { D'Orangeville, L. and Houle, D. and Duchesne, L. and Phillips, R.P. and Bergeron, Y. and Kneeshaw, D.D. },
    JOURNAL = { Nature Communications },
    YEAR = { 2018 },
    PAGES = { 3213 },
    VOLUME = { 9 },
    ABSTRACT = { Predicted increases in temperature and aridity across the boreal forest region have the potential to alter timber supply and carbon sequestration. Given the widely-observed variation in species sensitivity to climate, there is an urgent need to develop species-specific predictive models that can account for local conditions. Here, we matched the growth of 270,000 trees across a 761,100 km2 region with detailed site-level data to quantify the growth responses of the seven most common boreal tree species in Eastern Canada to changes in climate. Accounting for spatially-explicit species-specific responses, we find that while 2 °C of warming may increase overall forest productivity by 13 ± 3% (mean ± SE) in the absence of disturbance, additional warming could reverse this trend and lead to substantial declines exacerbated by reductions in water availability. Our results confirm the transitory nature of warming-induced growth benefits in the boreal forest and highlight the vulnerability of the ecosystem to excess warming and drying. },
    DOI = { https://doi.org/10.1038/s41467-018-05705-4 },
    OWNER = { DanielLesieur },
    TIMESTAMP = { 2018.08.13 },
    URL = { https://www.nature.com/articles/s41467-018-05705-4 },
}

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