Table 1 Summary of Total functional group concentrations over their pKa ranges from the uppermost mat layers during each sampling season. These measurements originate from EPS extracted from the green and orange layers or top 0.5 cm of each mat given a particular sampling season.
Functional Group | pKa Range | KAAS-1 March 2016 | KAAS-2 March 2016 | KAAS-1 October 2016 | KAAS-1 February 2018 | KAAS-2 February 2018 |
|---|---|---|---|---|---|---|
Average LT (mMol/g EPS) | Average LT (mMol/g EPS) | Average LT (mMol/g EPS) | Average LT (mMol/g EPS) | Average LT (mMol/g EPS) | ||
Carboxyl | 3–5.8 | 0.113 ± 0.08 | 0.173 ± 0.04 | 0.461 ± 0.23 | 0.075 ± 0.03 | 0.091 ± 0.05 |
Phosphoryl | 6–8 | 0.149 ± 0.01 | 0.103 ± 0.04 | 0.260 ± 0.32 | 0.044 ± 0.02 | 0.020 ± 0.01 |
Amine | 8–9 | 0.845 ± 0.25 | 0.224 ± 0.03 | 0.721 ± 0.48 | 0.545 ± 0.01 | 0.223 ± 0.02 |
Amine (hydroxyl) | 9–10 |
