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

Title data

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. Vol. 40 (2008) Issue 12 . - pp. 3014-3020.
ISSN 0038-0717
DOI: https://doi.org/10.1016/j.soilbio.2008.08.023

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER64583
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Ecological Microbiology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:33
Last Modified: 11 Sep 2015 06:33
URI: https://eref.uni-bayreuth.de/id/eprint/19103