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dc.contributor.authorRogers, Roderick Westgarth-
dc.description.abstractLichens are a group of organisms that make a significant contribution to biodiversity and ecosystem function in many environments. This account of studies undertaken over a thirty-year period includes studies on lichens in Mediterranean and subtropical arid lands, subtropical woodlands and rainforests. Substrata examined include soil surfaces, leaves, bark, palm-trunks and calcareous concretions on a coral cay. The systematics of lichenised fungi has undergone dramatic change in the last fifty years, with the role of secondary chemical products, ascocarp ontogeny and the structure of the ascus being given great weight. These issues are examined in terms of revisional studies of Australian taxa and the development of systems of classification for the Australian Lichen flora, necessitating creation of new taxa at species, genus and family level. The ecology and biogeography of lichens follows patterns which are similar to those exhibited by plants. The Lichens are shown to be extreme stress tolerators when compared with flowering plants. Within the lichens different ecological strategies can be determined that relate to both systematics and environment. The nature of succession in Lichen communities varies with nature of the community and the scale of study. The first and last papers in the series relate to lichens on arid-zone soil surfaces. Lichens are economically and environmentally important in these fragile land systems where they stabilise the soil- surface and are associated with nitrogen fixation. The work presented here documents both my intellectual development and the transition of Australian Lichenology from an intellectual backwater to its current prominent place in the global lichenological community.en
dc.titleBiology of lichensen
dc.contributor.schoolSchool of Agriculture, Food and Wineen
dc.provenanceThis electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at:
dc.description.dissertationThesis (D.Sc.) -- University of Adelaide, Dept. of Botany, 1999en
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