Galvan, J/ Rodriguez, C/ Ascaso, C 1981: The pedogenic action of lichens in metamorphic rocks. - Pedobiologia21: 60-73. [RLL List # 111-26 / Rec.# 6358] Keywords: PEDOGENESIS/ SAXICOLOUS/ WEATHERING/ PARMELIA/ LASALLIA/ RAMALINA/ ECOLOGY
Abstract: 9 figures. 4 tables. ["However, it has been possible to determine that the lichen species studied, so far, are able to form gels between thalli and rocks, that micaceous minerals are the most often retained under the thallus and that there is a direct relationship between the amount of the extracted minerals and the rock texture." Lichen species used in the study were Parmelia conspersa, P. tiliacea, Lasallia pustulata, and Ramalina protecta.]