Podrobnosti záznamu

Název
    Atmospheric sulfur deposition alters pathways of gaseous carbon production in peatlands
Autor
    Bridgham, S.D.
    Novák, Martin
    Vile, M. A.
    Wieder, R.K.
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Global Biogeochemical Cycles
Svazek/č.
    Roč. 17, č. 2
Strany
    7
Rok
    2003
Výraz tezauru
    sulfate reduction,methanogenesis,Sphagnum,peatlands,carbon,methan production,organic matter,mineralization,emission,acid deposition,climatic warming,greenhouse gases,carbon-dioxide
Klíčové slovo
    Alters
    Atmospheric
    Carbon
    Deposition
    Gaseous
    Pathways
    Peatlands
    Production
    Sulfur
Abstrakt (anglicky)
   Peatlands represent large carbon (C) reservoirs that can act as a source or sink for greenhouse gases. Methanogenesis is thought to be one of the most important anaerobic C mineralization pathways in peatlands, especially in regions where input of sulfate from acid deposition is low. Here we report greater anaerobic C flow through sulfate reduction than through methanogenesis at all sites situated along a global atmospheric sulfur deposition gradient. Stoichiometric mass balance suggests that fermentation is a dominant anaerobic C mineralization pathway in unpolluted peatlands, while methanogenesis contributed minimally to total anaerobic carbon mineralization in these sites. Global increases of atmospheric sulfur deposition minimize the impacts of climatic warming by simultaneously decreasing rates of methanogenesis while causing little change in rates of total anaerobic C mineralization in Sphagnum-dominated peatlands.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014