Table S3.

Summary of chemical and nutrient methods

AssayMethod descriptionRefs.
Ammonia, µg⋅L−1Phenate methodStandard methods 4500-NH3-G (68)
Calcium, mg⋅L−1Flame atomic absorption spectrophotometry65
Chlorine (Cl), mg⋅L−1Dionex membrane-suppression ion chromatography65, 66
Magnesium, mg⋅L−1Flame atomic absorption spectrophotometry65
Nitrate/nitrite, µg⋅L−1Cadmium reductionStandard methods 4500-NO3-E (68)
Pheophytin corrected chlorophyll a, µg⋅L−1Fluorometry with pheophytin correction following ethanol extractionStandard methods 10200.H (68)
pHHydrolab multisonde66
Potassium, mg⋅L−1Flame atomic absorption spectrophotometry (0.5% HNO3 preservative)66
Sodium, mg⋅L−1Flame atomic absorption spectrophotometry (0.5% HNO3 preservative)66
Soluble reactive phosphorus, µg⋅L−1Ascorbic acid methodStandard methods 4500-P.E. (68)
Sulfate (SO4), µg⋅L−1Dionex membrane- suppression ion chromatography66
Total dissolved nitrogen, µg⋅L−1Second derivative spectroscopy following persulfate digestion67
Total dissolved phosphorus, µg⋅L−1Ascorbic acid method following persulfate digestionStandard methods 4500-P.E and 4500-N.C (68)
Total nitrogen, µg⋅L−1Second derivative spectroscopy following persulfate digestion67
Total phosphorus, µg⋅L−1Ascorbic acid method following persulfate digestionStandard methods 4500-P.E and 4500-N.C (68)
Total chlorophyll a, µg⋅L−1Fluorometry following ethanol extractionStandard methods 10200.H (68)