Environmental Determinants Influencing Fish Community Structure and Diversity in Two Distinct Seasons among Wetlands of Northern Region (Ghana)
Table 3
Summary of PCA eigenvectors showing the levels of correlation with the first three axes of the environmental variables of the six sites. Asterisks () indicate significance (), following Monte Carlo permutation procedures.
Axis 1
Axis 2
Axis 3
Conductivity
−0.122
−0.414
0.152
TDS
−1.41
−0.404
0.156
pH
−0.202
−0.192
−0.530
Nitrate-nitrogen
−0.335
−0.165
0.080
Phosphate
−0.354
−0.072
0.148
Ammonia
−0.199
0.205
0.284
Calcium
−0.077
−0.408
0.249
Magnesium
−0.324
−0.162
−0.194
Dissolved oxygen
−0.235
0.298
−0.258
Turbidity
0.205
0.374
0.0004
Temperature
0.190
0.374
−0.540
Fire
−0.308
−0.160
−0.181
Grazing intensity
−0.342
0.060
0.085
Erosion
−0.338
0.141
0.075
Farming activities
−0.275
0.225
−0.241
% total variance explained
7.4
4.9
1.8
Cum % total variance explained = 81.83% (first two axes)
