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Table 3 CCA ordination summary and correlation coefficients between habitat variables and ordination axes

From: Bird diversity and waterbird habitat preferences in relation to wetland restoration at Dianchi Lake, south-west China

Summary of CCA ordination Axis 1 Axis 2 Axis 3 Axis 4
Eigenvalue 0.461 0.268 0.054 0.018
Species–environment correlations 0.930 0.969 0.691 0.591
Cumulative % variance of species data 46.300 73.200 78.500 80.300
Of species–environment relation 57.500 90.900 97.600 99.800
OA (Open water area) 0.102 − 0.147 0.025 − 0.138
MC (Macrophyte cover) − 0.142 0.071 0.447 0.238
BA (Building area) − 0.386 − 0.149 − 0.174 0.149
SP (Small pond) − 0.206 0.118 − 0.137 0.126
MF (Mud flood area) 0.042 0.947 − 0.081 − 0.055
LG (Low grassland) 0.501 − 0.043 0.031 0.134
Dry forest cover (DF) − 0.647 − 0.202 − 0.115 0.099
CL (Cultivated land) 0.183 − 0.051 − 0.013 0.143
SB (Shrub) 0.424 − 0.018 0.170 − 0.189
WF (Wetland forest) 0.271 − 0.081 0.346 − 0.392
HG (High grassland) − 0.237 0.145 0.279 − 0.337
WL (Waste lands) 0.496 0.345 − 0.226 0.097
Test of significance of first canonical axis F-ration = 11.195, p = 0.002
Test of significance of all canonical axes F-ration = 4.462, p = 0.001