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Correlated variables

Principal component Analyses (PCA) with logged flux (left) pCO2 (right), Hour and Day of year (DOY) as passive explanatory variables, and different variables as environmental variables

Positive correlations: flux

  • Wind speed (a tendency for positive correlations) (R2 = 0.093, p= 0.014)

Negative correlations: flux

  • O2 (R2 =0.422, p= 6.266*10-7 )
  • Water temperature (R2 = 0.240, p= 3.29*10-4 )
  • pH
  • Air pressure 

Positive correlations: pCO2  

  • Air pressure

Negative correlations: pCO2

  • O2 (R2 = 0.510, p= 2.2*10-16 )
  • Water temperature (R2 = 0.460, p= 2.2*10-16 )
Linear regressions of log flux and water temperature and log pCO2 and O2


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Last updated: 05/20/15