Restinga forests of the Brazilian coast: richness and abundance of tree species on different soils

Anais da Academia Brasileira de Ciências

Luiz F.s. Magnago²  Sebastião V. Martins¹  Carlos E.g.r. Schaefer¹  Andreza V. Neri² 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Vegetal Viçosa MG ,Brasil

关键词: Vegetation;    Flooded Forests;    Coastal ecosystem;    Sandy Soils;    Quaternary deposits;    Marine influence;    Riparian forests;    Vegetação;    Florestas inundadas;    Ecossistema costeiro;    Solos arenosos;    Depósitos quaternários;    Influência Marinha;    Florestas Ciliares;   

DOI  :  10.1590/S0001-37652012000300023

来源: SciELO

【 摘 要 】

The aim of this study was to determine changes in composition, abundance and richness of species along a forest gradient with varying soils and flood regimes. The forests are located on the left bank of the lower Jucu River, in Jacarenema Natural Municipal Park, Espírito Santo. A survey of shrub/tree species was done in 80 plots, 5x25 m, equally distributed among the forests studied. We included in the sampling all individuals with >3.2 cm diameter at breast height (1.30 m). Soil samples were collected from the surface layer (0-10 cm) in each plot for chemical and physical analysis. The results indicate that a significant pedological gradient occurs, which is influenced by varying seasonal groundwater levels. Restinga forest formations showed significant differences in species richness, except for Non-flooded Forest and Non-flooded Forest Transition. The Canonical Correlation Analysis (CCA) showed that some species are distributed along the gradient under the combined influence of drainage, nutrient concentration and physical characteristics of the soil. Regarding the variables tested, flooding seems to be a more limiting factor for the establishment of plant species in Restinga forests than basic soil fertility attributes.

【 授权许可】

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