Arboreous vegetation of an alluvial riparian forest and their soil relations: Porto Rico island, Paraná river, Brazil

Abstract

ABSTRACT

Comparison of the diet of Alouatta caraya (Primates: Atelidae) between a riparian island and mainland on the Upper Parana River, southern Brazil

“…The low diversity of species in the diet of A. caraya on both the island and the mainland may be typical in this region due to the low diversity of plant species available in riparian areas on the Paraná River (CAMPOS & SOUZA 2002. Diet in both groups is quite restricted, even when considering low plant diversity.…”

“…data). The island has 38 species, 942-1,652 ind ha -1 and H' = 1.97 -2.24 (CAMPOS & SOUZA 2002. The "embaúba" tree Cecropia pachystachya Trécul is the most abundant species in the region, yet more abundant on the island than the mainland (M.C.…”

“…As of the 1960s, the seasonally semideciduous submontane and alluvial forests, typical of the Paraná River, have almost totally disappeared (ROSA 1997, CAMPOS & SOUZA 2002. Today, these riparian environments form a mosaic including nearly natural fragments, devastated areas and forests in various stages of regeneration.…”

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

“…In tropical regions the semi-deciduous forest is a type of forest, composed of meso-phanerophyte that covers, in general, sand-dystrophic soils (IBGE, 1992). The influence of the environmental variables in the floristic composition and structure of a semideciduous forest community are shown by the tendency of different survival strategies present in the environment (Campos and Souza, 2002). Campos and Souza (2002) found that the structure, dynamics and distribution of a species are related to the environmental characteristics, which determine the successful establishment and exclusion of certain species.…”

“…The influence of the environmental variables in the floristic composition and structure of a semideciduous forest community are shown by the tendency of different survival strategies present in the environment (Campos and Souza, 2002). Campos and Souza (2002) found that the structure, dynamics and distribution of a species are related to the environmental characteristics, which determine the successful establishment and exclusion of certain species. Therefore, the high diversity in the riparian areas is associated with the physical and chemical substratum variability and the interaction between the topography and hydrological regime of the watershed (Soares and Perez-Filho, 1997).…”