Table 9. Characteristics of commercial tree species and Brazil-nut trees† present in 42 sample plots in the two communities. The total area of the sample plots is 1.05 ha. Mean (SD).


Variable Community A (trees/1.05 ha) Community B (trees/1.05 ha)
Number of commercial species present out of the top 30 most important commercial species in Acre 27 23
Total number of commercial stems present (% of total stems observed) 123 (19.0) 152 (27.7)
Number of commercial stems of commercial size‡ (% of all commercial stems) 30 (24.4) 16 (10.5)
Number of Brazil-nut trees present 11 15
Brazil-nut trees of commercial size‡ (% of Brazil-nut trees) 9 (82.0) 10 (66.0)
Number of old-growth Brazil-nut trees§ (% of Brazil-nut trees) 6 (55.0) 2 (13.0)

†The Brazil-nut tree is a federally protected species, but is sometimes used in local construction.
‡Diameter at breast height > 50 cm.
§Diameter at breast height > 100 cm.