High Temporal and Spatial Variability of Atmospheric-Methane Oxidation in Alpine Glacier Forefield Soils.

ABSTRACT: Glacier forefield soils can provide a substantial sink for atmospheric CH₄, facilitated by aerobic methane-oxidizing bacteria (MOB). However, MOB activity, abundance, and community structure may be affected by soil age, MOB location in different forefield landforms, and temporal fluctuations in soil physical parameters. We assessed the spatial and temporal variability of atmospheric-CH₄ oxidation in an Alpine glacier forefield during the snow-free season of 2013. We quantified CH₄ flux in soils of increasing age and in different landforms (sandhill, terrace, and floodplain forms) by using soil gas profile and static flux chamber methods. To determine MOB abundance and community structure, we employed pmoA gene-based quantitative PCR and targeted ampl

SUBMITTER: Chiri E 

PROVIDER: S-EPMC5583497 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature