2016-03-022016-03-022015-06MAGALHÃES, José Leonardo Lima; LOPES, Maria Aparecida. Species richness and abundance of low-trunk herb epiphytes in relation to host tree size and bark type, Eastern Amazonia. Revista Árvore, Viçosa, v. 39, n. 3, p. 457-466, jun. 2015. Disponível em: <http://www.scielo.br/pdf/rarv/v39n3/0100-6762-rarv-39-03-0457.pdf>. Acesso em: 1 mar. 2016. <http://dx.doi.org/10.1590/0100-67622015000300006>.1806-9088https://repositorio.ufpa.br/handle/2011/7131The composition and structure of the low-trunk epiphytic herb assembly as well as its vertical distribution were studied. DBH of host tree and bark type influence species richness and abundance in a nonlooded lowland tropical rainforest in Eastern Amazonia (1º57’36"S 51º36’55"W). A total of 37 epiphytic herb species were identified, among which 60% were Araceae. Species richness and abundance of epiphytic herbs showed tendency of positive correlation with host tree size and no relationships with bark type. Low positive correlation may be a by-product of the predominance of trees with smaller diameter in our sample rather than a reflection of neutral relationship. The absence of relationships with bark type may be partially explained by the large number of secondary, generalist, hemi-epiphytes and also may reflect the absence of suitable substrate in trees with smaller diameter.engAcesso AbertoAmazônia orientalEpífitaFloresta de terra-firmeFloresta Nacional de Caxiuanã - PAPará - EstadoMelgaço - PAArtigo de Periódico