Floristic Analysis and Spatial Pattern of Natural Regeneration in an Ombrophilous Mixed Forest Area, Municipality of Caçador, Santa Catarina State, Brazil

The objective of this research was to analyze the effect of extensive cattle raising on floristic composition and diversity of natural regeneration in permanent preservation areas of Ombrophilous Mixed Forest in the municipality of Caçador, Santa Catarina state, Brazil. Data were collected in 32 temporary fixed area plots (4×17 m) distributed randomly in permanent preservation areas. We measured the collar diameter (10 cm) and total height of all individuals taller than 30 cm, with circumference at breast height smaller than or equal to 15.7 cm (diameter ≤ 5 cm). The floristic analysis showed 61 species, 52 genera and 30 botanical families. The areas without cattle presented diversity slightly higher than the areas with cattle. In general, the floristic composition, diversity and equability between areas with and without cattle were similar.