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Inhibition of atmospheric methane oxidation by monoterpenes in Norway spruce and European beech soils

Titelangaben

Maurer, Daniel ; Kolb, Steffen ; Haumaier, Ludwig ; Borken, Werner:
Inhibition of atmospheric methane oxidation by monoterpenes in Norway spruce and European beech soils.
In: Soil Biology & Biochemistry. Bd. 40 (2008) Heft 12 . - S. 3014-3020.
ISSN 0038-0717
DOI: https://doi.org/10.1016/j.soilbio.2008.08.023

Abstract

Biological oxidation of atmospheric methane (CH4) in forest soils of the northern hemisphere is an important sink in the global CH4 cycle, but the effect of tree species on CH4 oxidation is not well understood. Previous studies suggest that soils under European beech (Fagus sylvatica) consume more atmospheric CH4 than soils under Norway spruce (Picea abies). A major difference in the chemical constituents of these tree species is the production of monoterpenes. The objectives of the present study were: (i) to quantify monoterpenes in leaves, needles, organic horizons (Oi, Oe, Oa), and mineral soil of a Norway spruce site and an adjacent European beech site of a temperate forest (Steigerwald, Germany); and (ii) to evaluate the potential of abundant monoterpenes to inhibit atmospheric CH4 oxidation. Major compounds were α- and β-pinene, limonene, and camphene. Highest concentrations were measured in Norway spruce samples (up to 63.9 μmol image). In European beech samples, monoterpene concentrations were close to or below the detection limit (≤0.00015 μmol image). For limonene, α- and β-pinene, the dose-dependent inhibition on atmospheric CH4 oxidation was determined. β-Pinene had the highest inhibition efficiency, followed by limonene and α-pinene. Norway spruce roots and mineral soil samples displayed similar monoterpene profiles, suggesting that roots can be considered as a source for inhibitory monoterpenes in Norway spruce soils. Monoterpene addition was always coupled to an increased carbon dioxide production. This indicates that monoterpenes may be microbially mineralized in these soils. In summary, the study revealed that the release of monoterpenes by both roots and litter may be sources in soil and that in situ monoterpene concentrations in spruce soil are high enough to explain reduced atmospheric CH4 uptake.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER64583
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Ökologische Mikrobiologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 11 Sep 2015 06:33
Letzte Änderung: 11 Sep 2015 06:33
URI: https://eref.uni-bayreuth.de/id/eprint/19103