Pentecost, A 1980: Aspects of competition in saxicolous lichen communities. - Lichenologist12: 135-144. [RLL List # 107-58 / Rec.# 14312] Keywords: SAXICOLOUS/ WALES/ BRITISH ISLES/ CALOPLACA/ ASPICILIA/ GROWTH/ COMPETITION
Abstract: [At two study sites in Wales competition was studied. "At one, two competing species (Caloplaca heppiana and C. aurantia) were well matched as neither exclusively outgrew the other, while at the other site, Aspicilia calcarea competed with C. heppiana, the former usually overgrowing the latter at marginal conacts, but A. calacrea was itself overgrown at 'window' contacts." The major factors which control the development and dynamics of these communities are shown to be colonization rate and density, radial growth rate, type of contact between species, and rate of senescence.]
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