Articles | Volume 12, issue 14
Biogeosciences, 12, 4261–4273, 2015
https://doi.org/10.5194/bg-12-4261-2015
Biogeosciences, 12, 4261–4273, 2015
https://doi.org/10.5194/bg-12-4261-2015

Research article 22 Jul 2015

Research article | 22 Jul 2015

Evidence for biological shaping of hair ice

D. Hofmann et al.

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We investigated an unusual ice type, called hair ice. It grows on the surface of dead wood of broad-leaf trees at temperatures slightly below 0°C. We describe this phenomenon and present our biological, physical, and chemical investigations to gain insight in the properties and processes related to hair ice: we found, that a winter-acive fungus in the wood is required. Ice segregation is the common mechanism. Chemical analyses show a complex mixture of several thousand lignin/tannin compounds.
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