This paper is an inventory of moss species occuring in diferent types of vegetation in the Zona Bragantina, Salgado microregion and Viseu municipalities, all located in the northeast of Pará. The results found 60 species and one variety in 632 moss samples, distributed in 30 genera and 16 families. Sematophyllaceae, Calymperaceae e Leucobryaceae were prominent in diversity of species and number of occurrencies. Sematophyllum subsimplex (Hedw.) Mitt. and Calymperes lonchophyllum Schwaegr. are the most abundant species. The results found at Salgado Microregion were compared to the results found at Zona Bragantina and Viseu municipalities. There is a higher diversity in primary vegetation, indicating that the replacement by the secondary vegetation results in the impoverishment of moss species diversity.
mosses inventory; primary vegetation; secondary vegetation
