Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

Acta Botanica Brasilica

Rodrigo Trassi Polisel²  Natália Macedo Ivanauskas¹  Marta Camargo De Assis¹  George John Shepherd¹  Kikyo Yamamoto¹ 

[1] ,Universidade Estadual de Campinas Instituto de Biologia Programa de Pós-Graduação em Biologia VegetalCampinas SP ,Brazil

关键词: herb-shrub layer;    phytosociology;    species richness;    mixed rain forest;    Atlantic Forest;   

DOI  :  10.1590/S0102-33062014000100009

来源: SciELO

【 摘 要 】

We analyzed the structure of the understory community in the Atlantic Forest sensu lato, for which phytosociological descriptions of the understory are lacking. We delineated 50 plots of 10 × 20 m each at four sites within an Araucaria forest (a subtype of Atlantic Forest), located in the municipalities of Bananal, Campos do Jordão, Itaberá and Barra do Chapéu, all of which are in the state of São Paulo, Brazil. To sample the resident species of the understory, we randomly selected five 1 × 1 m subplots within each plot, resulting in a total sampling area of 250 m² at each site. We identified differences among the locations, mostly due to proportional differences in growth forms, in terms of species richness and the importance values within the community. Factors potentially influencing the understory structure include macroclimatic and microclimatic conditions, as well as forest fragmentation, the abundance of deciduous trees in the canopy, the surrounding vegetation and geographic location.

【 授权许可】

CC BY   
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