This study aimed to compare three sampling methods: fixed area, Bitterlich, and Prodan, regarding accuracy and relative efficiency to estimate the variables: diameter at 1.30 m above soil level (DBH), number of trees, basal area, and volume. The limit of error established was 10% at probability level of 95%, using 30 plots for each method. Circumference at 1.30 m above soil level was measured, for conversion in...