Floristic and phytosociological description of a riparian forest and the relationship with the edaphic environment in Caiuá Ecological Station - Paraná - Brazil

Abstract

Relationship in soil physical and chemical properties of soil, floristic and phytosociological association of semi-deciduous riparian forest of the Paranapanema River (R) and Rosana Reservoir (Re) in the Caiuá Ecological Station were evaluated. Aerial photography and satellite image were used to determine the forest cover and to locate 15 transects 50 x 30m (1500m 2), which were used to sample trees with diameters at breast height (DBH) ≥ 15 cm. R contained 1487 individuals from 33 families, 64 genders and 73 species. The Shannon-weaver index (H′) was 3.318. Re contained 1146 individuals from 35 families, 72 genders and 85 species and the H′ was 3.755. There was a statistically significant difference (P≤0.05) between R and Re environments and statistically significant correlations (p<0.05) were detected between soil physical attributes and Importance Values (IV) using the Detrended Correspondence Analysis (DCA).