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Nevertheless, the water molecule is present, as ice, in a solid form in frozen soils or permafrosts, which cover large regions characterised by a polar climate.
2015 July 21, Christopher R. Penton et al., “Denitrifying and diazotrophic community responses to artificial warming in permafrost and tallgrass prairie soils”, in Frontiers in Microbiology, volume 6, →DOI:
In agreement with our overall trends within the permafrost samples, lower nirK and nirS and higher nosZ diversity have been identified in cryoturbated peat vs. unturbated peat soils (Palmer and Horn, 2012 ).