ABSTRACT
A study of the mosses in different ecosystems of the micro-region of the Salgado Paraense, northeastern State of Pará, was carried out. This study aimed to determine species richness, the ecosystem types and the substrates of occurrence of the species, as well as to identify species as indicators of disturbed environments and to increase to the knowledge of the bryoflora of Pará. This inventory recorded 38 moss species, distributed in 21 genera and 11 families. The species richness was relatively low, considering the large number of examined specimens (558). Calymperes afzelii, C. erosum, C. lonchophyllum, C. palisotii, Octoblepharum albidum var albidum, O. pulvinatum, Sematophyllum subsimplex, Splacnobryum obtusum and Taxithelium planum were better adapted to adverse conditions. Potentially, these species could be used as indicators of disturbed environments. However, all the species collected in the eight municipalities are adapted to a combination of environmental factors and find the necessary and favorable conditions for their maintenance and reproduction.
Key words:
Bryophytes; Bryoflora; ecossystems; Pará; species richness