MagnanGarneauLeStumBoivinEtAl2020

Reference

Magnan, G., Garneau, M., Le Stum-Boivin, E., Grondin, P., Bergeron, Y. (2020) Long-Term Carbon Sequestration in Boreal Forested Peatlands in Eastern Canada. Ecosystems. (URL )

Abstract

Forested peatlands are widespread in the boreal landscape, but their role as carbon (C) pools remains poorly documented. In this study, we investigated the long-term C sequestration function of boreal forested bogs in relation to fires in eastern Canada. Results show that the forested peatlands comprise substantial peat C mass reaching values similar to open peatlands. At the six studied peatland sites, the amount of C stored in peat (62-172 kg C m−2) exceeds substantially the aboveground tree biomass C (1.5-5.3 kg C m−2). The C locked up in live conifers on the peatlands corresponds only to a small fraction of the C stored in peat (1-6%). In comparison, the shallow organic layer (≤ 30 cm) in the adjacent paludifying stands store 10.8 kg C m−2 on average, which is about twice as much C as the live conifers. Long-term apparent C accumulation rates are relatively low in the studied forested bogs (mean: 15.9 g C m−2 y−1), suggesting that these ecosystems have lower C sequestration potential than non-forested bogs over millennia. The charcoal data suggest that past local fires reduced C sequestration rates, but these peatlands burn much less frequently than upland forests and are thus more efficient long-term C stores. This study highlights the importance of boreal forested peatlands as C reservoirs and helps understanding how fires, logging and climate change can affect their C sequestration function. These findings have important implications for ecosystem management that aims at maximizing C sequestration at the landscape level to mitigate climate change.

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@ARTICLE { MagnanGarneauLeStumBoivinEtAl2020,
    AUTHOR = { Magnan, G. and Garneau, M. and Le Stum-Boivin, E. and Grondin, P. and Bergeron, Y. },
    TITLE = { Long-Term Carbon Sequestration in Boreal Forested Peatlands in Eastern Canada },
    JOURNAL = { Ecosystems },
    YEAR = { 2020 },
    MONTH = { feb },
    ISSN = { 1435-0629 },
    ABSTRACT = { Forested peatlands are widespread in the boreal landscape, but their role as carbon (C) pools remains poorly documented. In this study, we investigated the long-term C sequestration function of boreal forested bogs in relation to fires in eastern Canada. Results show that the forested peatlands comprise substantial peat C mass reaching values similar to open peatlands. At the six studied peatland sites, the amount of C stored in peat (62-172 kg C m−2) exceeds substantially the aboveground tree biomass C (1.5-5.3 kg C m−2). The C locked up in live conifers on the peatlands corresponds only to a small fraction of the C stored in peat (1-6%). In comparison, the shallow organic layer (≤ 30 cm) in the adjacent paludifying stands store 10.8 kg C m−2 on average, which is about twice as much C as the live conifers. Long-term apparent C accumulation rates are relatively low in the studied forested bogs (mean: 15.9 g C m−2 y−1), suggesting that these ecosystems have lower C sequestration potential than non-forested bogs over millennia. The charcoal data suggest that past local fires reduced C sequestration rates, but these peatlands burn much less frequently than upland forests and are thus more efficient long-term C stores. This study highlights the importance of boreal forested peatlands as C reservoirs and helps understanding how fires, logging and climate change can affect their C sequestration function. These findings have important implications for ecosystem management that aims at maximizing C sequestration at the landscape level to mitigate climate change. },
    OWNER = { Daniel Lesieur },
    REFID = { Magnan2020 },
    TIMESTAMP = { 2020-02-24 },
    URL = { https://doi.org/10.1007/s10021-020-00483-x },
}

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