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Kraichak, E./ Divakar, P.K./ Crespo, A./ Leavitt, S.D./ Nelsen, M.P./ Lücking, R./ Lumbsch, H.T. 2015: A Tale of Two Hyper-diversities: Diversification dynamics of the two largest families of lichenized fungi. - Scientific Reports 5: 10028 . [RLL List # 240 / Rec.# 36394]
Abstract: Renewed interests in macroevolutionary dynamics have led to the proliferation of studies on diversification processes in large taxonomic groups, such as angiosperms, mammals, and birds. However, such a study has yet to be conducted in lichenized fungi – an extremely successful and diverse group of fungi. Analysing the most comprehensive time-calibrated phylogenies with a new analytical method, we illustrated drastically different diversification dynamics between two hyper-diverse families of lichenized fungi, Graphidaceae and Parmeliaceae, which represent more than a fourth of the total species diversity of lichenized fungi. Despite adopting a similar nutrition mode and having a similar number of species, Graphidaceae exhibited a lower speciation rate, while Parmeliaceae showed a sharp increase in speciation rate that corresponded with the aridification during the Oligocene-Miocene transition, suggesting their adaptive radiation into a novel arid habitat.
Genera/Families: Graphidaceae/Parmeliaceae
URL: http://www.nature.com/articles/srep10028
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