Finally, to remove the hydrological effect associated with the point-source input on nutrient uptake response and focus
only on the effect due to chemical changes, we examined relationships between vf of NH4+–N, NO3
−–N and PO4 3−–P and stream nutrient concentrations and molar ratios (NH4+–N:NO3−–N, DIN:SRP and DOC:DIN) using linear regression analyses, considering data from each stream separately and from the two reaches together. The significance level used for all statistical tests was p≤0.05, and marginally significance was defined by p≤0.10. All statistical analyses were performed with the SPSS® statistical package (for Windows, version 11.0.1, SPSS Inc., Chicago, Illinois).
Finally, to remove the hydrological effect associated with the point-source input on nutrient uptake response and focusonly on the effect due to chemical changes, we examined relationships between vf of NH4+–N, NO3−–N and PO4 3−–P and stream nutrient concentrations and molar ratios (NH4+–N:NO3−–N, DIN:SRP and DOC:DIN) using linear regression analyses, considering data from each stream separately and from the two reaches together. The significance level used for all statistical tests was p≤0.05, and marginally significance was defined by p≤0.10. All statistical analyses were performed with the SPSS® statistical package (for Windows, version 11.0.1, SPSS Inc., Chicago, Illinois).
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