Bryophyte communities were compared between arboreal (trunk bases) and terrestrial
habitats in primary forest Mount Halimun Salak National Park, West Java. The communities
were analyzed based on species diversity, abundance, and biomass. A total of 150 bryophytes
species were identified, including 67 species of mosses (Bryopsida) and 83 of liverworts
(Hepaticopsida). Both bryophyte groups varied in diversity and abundance between arboreal
and terrestrial communities as well as among different elevations. Species diversity of arboreal
habitats (116 species)was higher than that of terrestrial habitats (64 species). Moss specieswere
more abundant in terms of coverage in terrestrial habitats whereas liverworts species were
more abundant in arboreal habitats. Species richness in both terrestrial and arboreal habitats
decreased towards higher elevation, whereas the abundance increased.