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Table 2 Results of distance-based multivariate linear model for BCC showing the percentage of variation explained by individual environmental variables (ignoring other variables); and forward-selection of variables, where amount explained by each variable added to model is conditional on variables already in the model

From: Thermal discharge-created increasing temperatures alter the bacterioplankton composition and functional redundancy

Variable F P Variation (%) Cumulative (%)
Variables fitted individually
Grazing rate 4.31 0.001 8.4  
PO4 3− 3.52 0.001 7.0  
Temperature 3.26 0.001 6.5  
Chlorophyll a 2.64 0.005 5.3  
Salinity 2.61 0.003 5.3  
Chemical oxygen demand 1.88 0.023 3.9  
NH3·H2O 1.40 0.127 2.9  
Cl 1.36 0.139 2.8  
Dissolved oxygen 1.31 0.140 2.7  
NH4 + 1.22 0.215 2.5  
NO2 1.14 0.271 2.4  
NO3 0.96 0.433 2.0  
pH 0.82 0.672 1.7  
Oil 0.78 0.762 1.6  
Variables fitted sequentially
Grazing rate 4.31 0.001 8.4 8.4
PO4 3− 3.86 0.001 7.1 15.5
Chemical oxygen demand 2.00 0.006 3.5 19.0
Dissolved oxygen 1.93 0.013 3.3 22.3
Temperature 1.72 0.022 3.0 25.3
Salinity 1.44 0.060 2.4 27.7
NO2 1.40 0.075 2.3 30.0
pH 1.22 0.159 2.0 32.0
NO2 1.17 0.204 1.9 33.9
Cl 1.13 0.249 1.8 35.7
Oil 1.12 0.244 1.8 37.5
NH3·H2O 1.03 0.396 1.7 39.2
NH4 + 1.02 0.407 1.7 40.9
Chlorophyll a 0.93 0.536 1.5 41.4
  1. The italic values indicate significant correlation between biogeochemical factors and BCC, P < 0.05 level