Abstract

ALLEGRUCCI, Natalia et al. Diversity of anamorphic fungi in Celtis tala (Ulmaceae) native forest from Buenos Aires province, Argentina. Bol. Soc. Argent. Bot. [online]. 2007, vol.42, n.1-2, pp.79-86. ISSN 1851-2372.

In this paper we analyze the diversity of species that compose the saprotrophic (anamorphic Ascomycota) fungi community in the leaf litter and soil in Celtis tala forest in Magdalena , located in the province of Buenos Aires . Seasonal samples were taken during two years (2004-2005), and fungi were isolated and identified. The relative frequencies of fungi were calculated. To compare the similarity of the fungi composition between different habitats, Sorensen's index of similarity (S´) was applied. The frequencies of occurrence of these fungi were recorded and Shannon Weaver index (H´) was applied to evaluate fungal diversity. A total of 104 taxa of anamorphic fungi were identified from which 54 were isolated from leaf litter, 58 from soil, and 8 species common for both types of substrate. From the taxa identified, those that had higher frequencies for leaf litter were the less represented in soil and vice versa. Sorensen´s index of similarity resulted 0.14, which means that the saprotrophic fungi community that grows in leaf litter of Celtis tala is composed by different species than those that characterized the mycobiota from the soil of the same area. Nevertheless, no significant differences were found in the index of diversity.

Keywords : Fungal diversity; Leaf litter; Soil; Anamorfic Ascomycota.

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