Armstrong, RA 1981: Field experiments on the dispersal, establishment and colonization of lichens on a slate rock surface. - Environmental and Experimental Botany21: 115-120. [RLL List # 116-4 / Rec.# 911] Keywords: SAXICOLOUS/ PARMELIA/ BUELLIA/ DISPERSAL/ SLATE/ WALES/ BRITISH ISLES/ COLONIZATION
Abstract: 3 figures. 2 tables. [Colonization on a vertical slate rock surface was studied over a six year period in Wales. "At the end of the experiment relatively few thalli of Parmelia conspersa, Parmelia glabratula ssp. fuliginosa and Buellia aethalea had established in plots on undisturbed and newly-exposed smooth slate compared with the numbers that established in the cracks in newly-exposed slate. These results suggest that lichen propagules are abundant in run-off water but establishment is a hazardous process."]