Tree species diversity in a seasonally-dry forest: the case of the Pinkait赤 site, in the Kayap車 Indigenous Area, Southeastern limits of the Amazon

作者：Salm; Rodolfo

来源：Acta Amazonica, 2004.

DOI：10.1590/S0044-59672004000300009

• amazon
• anthropogenic forest
• arborescent palms
• floristics
• tropical forests.

this study investigates patterns of forest structure and tree species diversity in an anthropogenic palm grove and undisturbed areas at the seasonally-dry pinkait赤 research station, in the kayap車 indigenous area. this site, managed by the conservation international do brasil, is the most southeastern site floristically surveyed in the amazon until now. the secondary and a nearby undisturbed forest were sampled in a group of 52 floristic plots of 0.0625-ha (25x25-m) where all trees with dbh %26gt; 10 cm were measured and identified. the analyses were complemented with other two floristic plots of 1-ha (10x1000-m). the present study has shown that the pinkait赤, like other seasonally-dry forests, have great heterogeneity in forest structure and composition, associated with biotic characteristics of the most important tree species, natural disturbance and history of land-use. the palm grove, moderately dominated by the arborescent palm attalea maripa (aubl.) mart., presented high tree species diversity and was floristically similar to undisturbed forests at the study site. it is discussed the importance of large arborescent palms for the seasonally-dry amazon forests regeneration.