Table 1. Carbon and nitrogen uptake rates ± standard deviation given in nmol C or N h-1 l-1 for cyanobacteria, and fmol C or N h-1 cell-1 for associated bacteria.
10 min | 30 min | 60 min | 6 h | 24 h | |
---|---|---|---|---|---|
13C uptake nmol C h-1 l-1 (fmol C h-1 cell -1 for associated bacteria) | |||||
Aphanizomenon sp. | 0.3 ± 3.52 | 0.00 ± 0.57 | 1.06 ± 2.69 | 0.41 ± 1.35 | 0.00 ± 0.02 |
Dolichospermum sp. | 0.06 ± 0.76 | 0.25 ± 0.71 | 0.05 ± 0.2 | 0.07 ± 0.13 | 0.27 ± 0.18 |
Nodularia sp. | 5.88 ± 20.28 | 0.00 ± 0.95 | 0.4 ± 1.5 | 0.19 ± 0.4 | 0.00 ± 0.03 |
Pseudanabaena sp. | 2.48 ± 1.5 | 1.98 ± 0.89 | 2.55 ± 0.91 | 1.13 ± 0.72 | 1.87 ± 1.08 |
Alphaproteo* | 0.59 ± 0.9 | 0.00 ± 0.04 | 0.00 ± 0.07 | 0.13 ± 0.23 | 0.2 ± 0.32 |
Cytophaga/Bacteroidetes* | 0.12 ± 0.09 | 0.24 ± 0.45 | 0.03 ± 0.06 | 0.19 ± 0.27 | 0.31 ± 0.34 |
15N uptake nmol N h-1 l-1 (fmol N h-1 cell -1 for associated bacteria) | |||||
Aphanizomenon sp. | 1.03 ± 1.6 | 0.00 ± 1.27 | 0.28 ± 0.42 | 0.17 ± 0.4 | 0.00 ± 0.02 |
Dolichospermum sp. | 0.73 ± 0.45 | 0.17 ± 0.3 | 0.05 ± 0.08 | 0.09 ± 0.17 | 0.04 ± 0.03 |
Nodularia sp. | 8.07 ± 18.4 | 0.03 ± 0.87 | 0.18 ± 0.53 | 0.19 ± 0.23 | 0.00 ± 0.02 |
Pseudanabaena sp. | 1.49 ± 0,47 | 0.8 ± 0.56 | 0.84 ± 0.17 | 0.48 ± 0.31 | 0.17 ± 0.05 |
Alphaproteo* | 0.00 ± 0.08 | 0.2 ± 0.73 | 0.31 ± 0.76 | 1.15 ± 1.29 | 0.34 ± 0.2 |
Cytophaga/Bacteroidetes* | 0.95 ± 1.01 | 0.36 ± 0.53 | 1.2 ± 1.93 | 0.67 ± 0.92 | 0.25 ± 0.17 |
Lines with rates of the associated bacteria are indicated with an asterisk.