Green, TGA/ Lange, OL 1991: Ecophysiological adaptations of the lichen genera Pseudocyphellaria and Sticta to south temperate rainforests. - Lichenologist23(3): 267-282. [RLL List # / Rec.# 7009] Keywords: ADAPTATIONS/ DESICCATION/ LIGHT/ LIGHT SATURATION/ PHOTOSYMBIODEMES/ SHADE/ WATER RELATIONS/ WATER STORAGE
Abstract: 6 fig. 7 tab. ["These lichens exhibit a great diversity of both form and habitat range. Physiological and morphological adaptation has also been demonstrated. Pseudocyphellaria dissimilis shows changes in thallus water storage capacity with evaporative demand and is also highly shade-adapted. The species has the lowest light saturation and compensation values for photosynthesis yet known for lichens (20 and 1 µmol m-2s-1, PAR, respectively). Unexpectedly it is also highly desiccation-sensitive with some thalli being killed after only 20 h exposure to 15% relative humidity." The physiological differences between the green algal and cyanobacterial sectors of the P. rufovirescens-P. murrayi photosymbiodeme are also investigated.]