R. Reiter, M. Höftberger, T. G. A. Green and R. Türk 2008: Photosynthesis of lichens from lichen-dominated communities in the alpine/nival belt of the Alps — II: laboratory and field measurements of CO2 exchange and water relations. - Flora203(1): 34-46. [RLL List # 211 / Rec.# 30288] Keywords: PHOTOSYNTHESIS/ WATER RELATIONS/ CO2 EXCHANGE/ PPFD/ LIGHT COMPENSATION/ DRY WEIGHT/ DIURNAL COURSES/ MICROCLIMATE/ ALPINE ZONE/ ANTARCTICA/ PHOTOSYNTHETIC PHOTON FLUX DENSITY/ RELATIVE HUMIDITY/ VAPOR PRESSURE DEFICIT
Abstract: [Study using Umbilicaria cylindrica, Brodoa atrofusca and Xanthoria elegans. "In the field the lichens were metabolically active at air temperatures between –0.7 and 12.8°C. On sunny days the lichens in the field were metabolically active only for 3h during the early morning. In this time they reached the maximal values or values close to the maximal CO2 uptake in situ." Comparisons are made with data from Antarctica.]