Kappen, L 1985: Water relations and net photosynthesis of Usnea. A comparison between Usnea fasciata (maritime Antarctic) and Usnea sulphurea (continental Antarctic). - In: D. H. Brown (ed.): Lichen Physiology and Cell Biology. . Plenum Press, New York and London pp. 41-56. [RLL List # 127-96 / Rec.# 9801] Keywords: ANTARCTIC/ USNEA/ PHYSIOLOGY/ WATER REALTIONS/ ADAPTATION/ ECOLOGY/ PHOTOSYNTHESIS
Abstract: 2 tables. 10 figures. [Distinct differences were found when comparing the two species in these distinct environments with respect to several ecophysiological parameters; however, "there is no difference between the species with respect to the moisture dependency of net photosynthesis. Thus, U. sulphurea, in the dry continental Antarctic, needs particular localities where sufficient moisture is available."]