Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia

Acta Botanica Brasilica

Mariana Victória Irume²  Maria De Lourdes Da Costa Soares Morais¹  Charles Eugene Zartman¹  Iêda Leão Do Amaral¹ 

[1] ,Instituto Nacional de Pesquisas da Amazônia Programa de Pós-Graduação em Botânica Manaus AM ,Brazil

关键词: Amazon rainforest;    epiphytic groups;    composition;    diversity;    distribution;   

DOI  :  10.1590/S0102-33062013000200012

来源: SciELO

【 摘 要 】

This survey aimed to describe the floristic composition and structure of the epiphytic community occurring in a terra firme forest in the city of Coari, Brazil, in the Amazon region. Data collection was performed with a 1.5 ha plot method, with which upland, slope and lowland habitats were sampled. All angiosperm epiphytes and their host plants (diameter at breast height > 10 cm) were sampled. We recorded 3.528 individuals in 13 families, 48 genera and 164 species. Araceae was the most prevalent family with regard to the importance value and stood out in all related parameters, followed by Bromeliaceae, Cyclanthaceae and Orchidaceae. The species with the highest epiphytic importance values were Guzmania lingulata (L.) Mez. and Philodendron linnaei Kunth. The predominant life form was hemiepiphytic. Estimated floristic diversity was 3.2 (H'). The studied epiphytic community was distributed among 727 host plants belonging to 40 families, 123 genera and 324 species. One individual of Guarea convergens T.D. Penn. was the host with the highest richness and abundance of epiphytes. Stems/trunks of host plants were the most colonized segments, and the most favorable habitat for epiphytism was the lowlands, where 84.1% of species and 48.2% of epiphytic specimens were observed.

【 授权许可】

CC BY   
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