Kappen, L 1989: Field measurements of carbon dioxide exchange of the Antarctic lichen Usnea sphacelata in the frozen state. - Antarctic Science1(1): 31-34. [RLL List # 139 / Rec.# 9805] Keywords: ANTARCTICA/ USNEA/ CO2 EXCHANGE/ PHOTOSYNTHESIS/ ECOPHYSIOLOGY/ WATER RELATIONS
Abstract: 1 figure. ["Carbon dioxide uptake was detected down to -10 C. The carbon production during such a 'frost' day was considerable for a slow-growth Antarctic lichen. The mechanism of water uptake when the thalli are frozen needs further investigation."]
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