Determinant factors on natural regeneration in a fragment of araucaria forest on Santa Catarina State plateau

作者：Higuchi Pedro^*; da Silva Ana Carolina; Buzzi Junior Fernando; Negrinii Marcelo; Ferreira Tiago de Souza; de Souza Sheila Trierveiler; dos Santos Kristiana Fiorentin; Vefago Manoela Bez

来源：Forest Sciences, 2015, 43(106): 251-259.

• Regenerative component
• mixed shade forest
• multivariate analyses

This study aimed to describe the floristic and regenerative component structure in an Araucaria Forest fragment and to evaluate the influence of environmental variables and adult tree component (DBH >= 5 cm) on natural regeneration spatial organization. In 50 sampling units, botanic identification and the height class (h) were recorded for all regenerative individuals: Class 1 (20 cm <= h <= 1 m), Class 2 (1 < h <= 3 m), Class 3 (h > 3 m e DBH < 5 cm). In addition, in each plot, variables related to soil, terrain, canopy cover, density and richness of trees with DBH 5 cm were recorded. The relation between the regenerative component and the variables were analyzed by a Canonical Correspondence Analysis (CCA). The survey totaled 79 regenerative species. The richest family was Myrtaceae with 20 species. The results showed a sharp reduction in abundance from the smaller to the larger size class and little influence of the analyzed variables on regenerative component spatial organization.

• 出版日期2015-6