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

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

  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
 Reservea 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
  1. 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).