Global atmospheric methane (CH 4) concentrations are now approaching 1800 ppbv as a
result of the growing imbalance between the net CH 4 emissions from natural and …

Methane (CH4) is a critical greenhouse gas, with wetlands and flooded rice soils
contributing> 38% of the global emissions of CH4. A key process that offsets CH4 production …

Glaciers cover about 10% of the Earth's land area but they are retreating rapidly and many
will disappear within decades. Glacier retreat is a worldwide phenomenon increasing the …

Carbon dioxide (CO 2) and methane (CH 4) emissions from freshwater ecosystems are
predicted to increase under climate warming. However, freshwater ecosystems in …

Retreating ice fronts (as a result of a warming climate) expose large expanses of
deglaciated forefield, which become colonized by microbes and plants. There has been …

Permanently frozen soil, or permafrost, covers a large portion of the Earth's terrestrial surface
and represents a unique environment for cold-adapted microorganisms. As permafrost …

Subglacial environments are largely anoxic, contain organic carbon (OC) overridden by
glacier ice during periods of advance, and harbour active microbial communities. This …

Microbial processes that mineralize organic carbon and enhance solute production at the
bed of polar ice sheets could be of a magnitude sufficient to affect global elemental cycles …

Methane (CH4) is one of the strongest greenhouse gases. Sources of CH4 are
anthropogenic and natural, former playing∼ 60% role. Major sink for CH4 are the …

Microbial communities in the glacier forefield of Styggedalsbreen, Norway, were
investigated along a chronosequence from newly exposed soil to vegetated soils using next …