Comparaˋˋes flor赤sticas e estruturais entre comunidades de palmeiras em fragmentos de floresta prim芍ria e secund芍ria da 芍rea de Proteˋˋo Ambiental Raimundo Irineu Serra - Rio Branco, Acre, Brasil

作者：Carvalho; Anelena Lima de; Ferreira; Evandro Jose Linhares; Lima; Joanna Marie Tucker

来源：Acta Amazonica, 2010.

DOI：10.1590/S0044-59672010000400004

• arecaceae
• floristic composition
• population structure
• forest fragments
• secondary forest.

this study compares the composition and structure of palm communities in fragments of secondary and primary forest within the raimundo irineu serra environmental protection area (aparis), located at the urban perimeter of rio branco, acre. to evaluate the palm communities, we selected secondary forest areas belonging to three distinct successional stages: 7.5 years; 27.5 years, 37.5 years, and a primary forest fragment. in each forest type we installed five 20 x 20 m plots, where we analyzed floristic composition, vegetation structure, and population demography of all palm species (arecaceae). in all, we identified 1034 palm individuals, including 12 genera, 19 species. primary forest exhibited the greatest palm diversity. structural analysis of each area revealed a scarcity of seedlings (≒ 50 cm tall) and reproductive adults. fragmentation altered the composition and decreased the richness and diversity of palms within the aparis, while at the same time, favoring the dominance of certain species, such as a. phalerata.