The age of CO2 released from soils in contrasting ecosystems during the arctic winter

Iain P Hartley, Mark H Garnett, Martin Sommerkorn, David William Hopkins, Philip A Wookey

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    6 Citations (Scopus)

    Abstract

    In arctic ecosystems, winter soil respiration can contribute substantially to annual CO2 release, yet the source of this C is not clear. We analysed the C-14 content of C released from plant-free plots in mountain birch forest and tundra-heath. Winter-respired CO2 was found to be a similar age (tundra) or older (forest) than C released during the previous autumn. Overall, our study demonstrates that the decomposition of older C can continue during the winter, in these two contrasting arctic ecosystems. (c) 2013 Elsevier Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)1-4
    Number of pages4
    JournalSoil Biology and Biochemistry
    Volume63
    DOIs
    Publication statusPublished - Aug 2013

    Keywords

    • (CO2)-C-14
    • Passive sampling
    • Mountain birch
    • Radiocarbon
    • Tree-line
    • Tundra-heath
    • Winter respiration
    • TEMPERATURE SENSITIVITY
    • MOLECULAR-SIEVE
    • VEGETATION TYPE
    • ORGANIC-CARBON
    • CLIMATE-CHANGE
    • RESPIRATION
    • DECOMPOSITION
    • REGION
    • TUNDRA
    • STOCKS

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