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Table 4 The correlation coefficients (r) between indices

From: Environmental factors affecting the composition and diversity of the avian community in igune, a traditional agricultural landscape in northern Japan

  Whole communities Diet guilds Foraging site guilds Habitat type
N W HW E W H’(d) E(d) H’(f) E(f) H’(h) E(h)
Whole communities
N W  
HW 0.54 1
E W 0.18 0.92** 1
Diet guilds
H’(d) 0.35 0.89** 0.89** 1
E(d) 0.24 0.87** 0.92** 0.95*** 1
Foraging site guilds
H’(f) 0.40 0.56 0.45 0.26 0.28 1
E(f) 0.40 0.60 0.49 0.30 0.31 1*** 1
Habitat type
H’(h) 0.34 0.92** 0.92** 0.76* 0.78* 0.65 0.68 1
E(h) 0.26 0.90** 0.93*** 0.75* 0.79* 0.65 0.69 0.99*** 1
  1. *P < 0.05; **P < 0.01; ***P < 0.001
  2. H’(d) and E(d) mean the value of H’ and E of diet guild, H’(f) and E(f) mean the value of H’ and E of foraging site guild, and H’(h) and E(h) mean the value of H’ and E of habitat type