Abstract
It was established from previous work that lichen abundance, distribution and recolonization, and lichen species composition, can clearly be correlated to the frequency and behaviour of past fires in areas of cerrado vegetation. Using these various responses of lichens, at both the community and species level, a Lichen Fire History (LFH) Key is constructed. An appraisal of the LFH Key, summarizing its effectiveness and applicability, are given and suggestions for further research into testing and improving the Key are proposed. This study suggests that the technique of using lichen keys for detecting fire history is not limited to savannas, and could be applied to any ecosystem in which fire plays a dominant role, and where the woody vegetation supports an abundant lichen community.
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