EDAPHIC FACTORS AND VARIATIONS FLORISTIC REGENERATION IN TWO NATURAL FORMATIONS FORESTRY

• Autor(a) principal: Jardim, Daniel Gonçalves
• Data de Publicação: 2016
• Outros Autores: Jardim, Mário Augusto Gonçalves, Quaresma, Adriano Costa, Costa Neto, Salustiano Villar
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/1951

The coastal ecosystems are more influenced by the characteristics of the soil along with the availability of nutrients act as a determining factor of the floristic composition and structure of a community. To verify the correlation between edaphics factors and species composition in two forests formations on the coastal amazon in the Environmental Protection Area Algodoal-Maiandeua, Maracanã, Pará we delimited three plots of 50 x 50 m (0.75 ha) in dry coastal forest and two (0.50 ha) in floodplain forest. We divided each plot into 50 plots of 2 x 2 m and we randomly identified and quantified all individuals with height ≥ 5 cm and ≤ 80 cm. In addition, we calculated the relative density. We used five single soil sample plots for edaphic analysis. The collection of soil for analysis was done using 5 single samples plots. To relate the gradients to edaphics component was performed canonical correspondence analysis (CCA). In the dry coastal forest the CCA showed greater correlation between Myrcia fallax, Pradosia pedicellata, Protium heptaphyllum and Parkia pendula with Fe, P, Cu, Ca, K and OM in the flooding forest, Symphonia globulifera, Virola surinamensis were high compared with CaCl2, KCl, H2O, Zn and N. Was constated distinctly the separation of the species best represented in the forests and the relationship with soil nutrients.Keywords: Dry coastal forest; Flooding forest; Nutrients of soil.