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    Author(s): William F.J. Parsons; James G. Bockheim; Richard L. Lindroth
    Date: 2008
    Source: Ecosystems. 11: 505-519.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (370.74 KB)


    The future capacity of forest ecosystems to sequester atmospheric carbon is likely to be influenced by CO2-mediated shifts in nutrient cycling through changes in litter chemistry, and by interactions with pollutants like O3. We evaluated the independent and interactive effects of elevated CO2 and O3 on leaf litter decomposition in trembling aspen (Populus tremuloides) and paper birch (Betula papyrifera) at the Aspen free air CO2 enrichment (FACE) site (Wisconsin, USA). Fumigation treatments consisted of replicated ambient, +CO2, +O3, and +CO2 + O3 FACE rings.

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    Parsons, William F.J.; Bockheim, James G.; Lindroth, Richard L. 2008. Independent, interactive, and species-specific responses of leaf litter decomposition to elevated CO2 and O3 in a northern hardwood forest. Ecosystems. 11: 505-519.


    Betula papyrifera, elevated CO2, decomposition, elevated O3, FACE, leaf litter, limit values, litter quality, Populus tremuloides

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