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Correlation matrix between the considered variables in the water. PI is fish production intensity, t. is temperature, turbidity is mean water turbidity, X. O2 is oxygen saturation, DO is dissolved oxygen, zooplankton is estimated zooplankton production, BMI is estimated benthic macro-invertebrate production, TP is total phosphorus concentration, TN is total nitrogen concentration, bla is concentration of chlorophyll from blue green algae, bra is concentration of chlorophyll from brown algae, gra is concentration of chlorophyll from green algae, tpp is the total chlorophyll concentration. X.bla, X.bra and X.gra are the proportions of chlorophyll from blue green, brown, and green algae in tpp, respectively. Circles indicate significantly (p < 0.05) positive (blue) and negative (red) correlations.
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