Poster, BIOTA-International Congress Biodiversity of Africa - Observation and Sustainable Management for our Future!, Spier, RSA: 29.09.2008 - 03.10.2008
The diversity of lichens forming biological soil crusts has been assessed at 28 observatories located along the BIOTA Southern Africa transects, by identifying lichen taxa and taking small scale digital imagery of the soil surface. Easily identifiable lichen morphogroups (DMGs) were determined among the recorded taxa, by statistical analysis of main morphological characters and of colour values, in order to facilitate an automated image classification. The distribution and cover amount of lichen morphogroups were subsequently analysed. Results from 18 observatories of Namibia are presented. The developed approach appears suitable to facilitate long-term monitoring of soil lichen diversity and may facilitate routine field work by specifically trained non-scientists.