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Speciation and distribution in Corticiaceae (Basidiomycetes)

Nils Hallenberg
Plant Systematics and Evolution
Vol. 177, No. 1/2 (1991), pp. 93-110
Published by: Springer
Stable URL: http://www.jstor.org/stable/23674665
Page Count: 18
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Speciation and distribution in Corticiaceae (Basidiomycetes)
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Abstract

Evolutionary processes in Corticiaceae (wood-inhabiting basidiomycetes) are discussed on the basis of sibling species analysis, colonization strategies, and the known present distribution. It is proposed that the phylogenetical differentiation of basidiocarp structures may be very old and many species have remained unchanged. Subsequent evolution has to a great part been the effect of biological interaction with the environment, like colonization of new substrata, and the formation of species complexes may be a consequence of this. The amount of spores liberated from a single basidiocarp is regarded as an adaptive character for dispersal mainly in the immediate environment. The actual, wide distribution of many species is supposed to be associated with expansion of pertaining forest types in the past. When rapid expansion of a species occurs it is likely to be connected with occupation of a new ecological niche. Finally, the consequences for fungal communities in modern forestry are discussed.

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