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Soil microfungi in homogeneous areas of three plant communities of North Italy.—The soil microfungi associated with three different community types in Prealpine region of North Italy were investigated. Frequency values for the taxonomic entities isolated were calculated, based on occurrence at sampling sites, in each community. Most of the entities were quantitatively rare. The microfungal communities associated with Acer pseudoplatanus and Fraxinus excelsior, with Ostrya carpinifolia and with Fagus sylvatica appeared to be a distinctive group, even if many of them contained a substantial number of species wich are common with other vegetation types.

Post-fire sequences in microfungal soil populations in Mount Argentario (Toscana region). A research program was conducted to investigate the post-fire sequences of microfungal populations in Thyrrenian Coastal soils. This paper reports the results of the first year of that study. An initial reduction of fungi was followed by a gradual reconstruction process characterized by a constant increase of colonies and species. The periodic after fire analysis permitted an initial understanding of the possible selective role of the fire and its consequences on some microfungal species.