Interaction between forest biodiversity and people’s use of forest resources in Roviana, Solomon Islands: implications for biocultural conservation under socioeconomic changes

Table 6 The numbers of trees, tree species, and proportions of useful trees found in each forest class

	No. of trees (per 1/4 ha)	No. of species (per 1/4 ha)	No. of useful trees (per 1/4 ha)	No. of useful species (per 1/4 ha)	% of useful trees	% of useful species
Main island (Tutupeka)
Primary	168	31	87	15	51.8	48.4
Reserve^a	120 (122, 117)	49 (27, 41)	82	26	68.3	53.1
Secondary	181	48	53	18	29.3	37.5
Mangrove	137	10	87	6	63.5	60.0
Logged (selectively)	180	49	92	20	51.1	40.8
Barrier island (Toba)
Primary	117	19	80	12	68.4	63.2
Secondary	124	36	77	16	62.1	44.4

^aTwo quadrats (1/4 ha each) were made and the number of trees were averaged for the reserve (the numbers of trees and species for respective quadrats were shown in the parentheses).