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Schroeter, B/ Green, TGA/ Seppelt, RD/ Kappen, L 1992: Monitoring photosynthetic activity of crustose lichens using a PAM-2000 fluorescence system. - Oecologia 92(4): 457-462. [RLL List # 152 / Rec.# 16719]
Keywords: ANTARCTIC/ CO2 EXCHANGE/ CRUSTOSE/ FLUORESCENCE YIELD/ INSTRUMENT/ PHOTOSYNTHESIS/ WATER CONTENT
Abstract: 5 fig. 2 tab. ["CO2 exchange and fluorescence yield of the crustose lichen Buellia frigida were measured in situ by means of a CO2 porometer and a PAM-2000, a newly developed portable fluorescence system....It proved possible, using the PAM-2000, to differentiate the physiological performance of the thallus centre and the marginal lobes. The distribution of water in the thallus during a drying cycle was shown to be inhomogeneous. The photosynthetic rates of B. frigida calculated on an area basis are comparatively high and indicate that this lichen is well adapted to its habitat conditions in this part of continental Antarctica."]

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