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Effects of Wave Exposure and Aspect on Hong Kong Supralittoral Lichens

Published online by Cambridge University Press:  28 March 2007

F. Joanna Chu ,
Mark R. D. Seaward  and
I. John Hodgkiss
F. Joanna Chu
Affiliation:
Department of Ecology and Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong.
Mark R. D. Seaward
Affiliation:
Department of Environmental Science, University of Bradford, Bradford BD7 1DP, UK.
I. John Hodgkiss
Affiliation:
Department of Ecology and Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong.
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Abstract

The effects of wave exposure and aspect on the zonation of supralittoral lichens were studied at 14 sites in Hong Kong. In general, increasing wave exposure raised the supralittoral zones and extended their vertical widths. A higher lichen cover in the lower zones (Zones 1 and 2)l was found with greater wave exposures, but the opposite was true for upper zones (Zones 3 and 4). Lichen diversity was greater with increased wave exposure in three out of the four zones (Zones 2–4). The effects of aspect are mainly due to the prevailing winds, which resulted in south- and east-facing shores supporting a higher cover and diversity of lichens. The distribution patterns of lichens on this subtropical seashore differed from previous studies in the temperate regions of the northern hemisphere.

Type
Research Article
Information
The Lichenologist , Volume 32 , Issue 2 , March 2000 , pp. 155 - 170
Copyright
Copyright © British Lichen Society 2000

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