Abstract

REVILLA MINAYA, Caissa  and  CALDERON RODRIGUEZ, Abelardo. Structure and diversity of the liana and hemiepiphyte community in the Lowland Forest at Oxapampa, Pasco-Perú. Ecol. apl. [online]. 2006, vol.5, n.1-2, pp.9-21. ISSN 1726-2216.

The structure and diversity of the liana and hemiepiphyte community were examined in the lowland forest of the Estación Biológica Paujil at the Parque Nacional Yanachaga-Chemillén and the Comunidad Nativa Yanesha Buenos Aires in the Oxapampa province of Pasco - Perú. Lianas and hemiepiphytes with DBH ≥ 0.5 cm were sampled in three 2 x 500m plots, placed randomly in both sites. The hemiepiphyte Philodendron sp.1 was the most structurally important climber at E.B. Paujil, due to its high density, frequency and length values. Philodendron ernestii Engl. played a similar role in Buenos Aires, having the highest density and frequency. Bignoniaceae, Fabaceae and Menispermaceae were the predominant families at both sites, which is expected for this forest type. Araceae was also an important family, above all at the E.B. Paujil. The value of the Fisher α Index revealed a higher diversity at both of the present study sites in comparison to that observed at other Neotropical sites of the same forest type. This result may be due to the elevated annual rainfall at the study sites, which may demonstrate the important contribution made by environmental factors on the climbing plant community.

Keywords : Lianas; hemiepiphytes; structure; density; dominance; diversity; Parque Nacional Yanachaga-Chemillén; Yanesha Native Communities; lowland forest.

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