Podrobnosti záznamu

Název
    Sulfur metabolism in polluted Sphagnum peat bogs: a combined 34S-35S-210Pb study
Autor
    Adamová, Marie
    Milicic, J.
    Novák, Martin
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Water, Air and Soil Pollution: Focus
Svazek/č.
    Roč. 3, č. 1
Strany
    19
Rok
    2003
Výraz tezauru
    acid deposition,210-Pb dating,peat,pollution,peatlands,35-S,Sphagnum,stable sulfur isotopes,sulfur metabolism,bacterial sulfate reduction,mineralization,diagenesis
Klíčové slovo
    34S-35S-210Pb
    Bogs
    Combined
    Metabolism
    Peat
    Polluted
    Sphagnum
    Study
    Sulfur
Abstrakt (anglicky)
   The size and isotopic behavior of sulfur pools in 210Pb-dated peat cores were investigated to obtain an insight into retention mechanisms of pollutant S in two mountain-top peatlands of the Northern Czech Republic, Central Europe.At Pod Jeleni horou (JH) both the S concentration maximum and the highest annual S deposition rate were displaced downward by more than 20 years (from 1987 to the 1960s) indicating that the buried S is vertically mobile.At Velky Mocal (VM) the S concentration was the highest in the topmost 2-cm section even though atmospheric S deposition peaked in 1987.Different mechanisms of S isotope redistribution prevailed in the topmost peat layers at JH, where a negative ?34S shift occurred, and at VM, where a positive ?34S shift occurred.Bacterial sulfate reduction was responsible for the negative ?34S shift at JH. One possible explanation of the positive ?34S shift at VM is release of 32S-enriched products of mineralization during peat diagenesis.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014