Table 2.
Results from Passing-Bablok regression of qPCR and microscopy measurements of A. catenella concentrations during the 2013 bloom in Salt Pond (Eastham, MA USA).
| Method Comparison | N | Slope (95% CI) | Intercept (95% CI) | Cusum |
|---|---|---|---|---|
| sxtA, microscopy | 72 |
0.71 (0.59–0.85) |
0.96 (0.59–1.21) |
P > 0.1 |
| sxtA, microscopy (≥100 cells L−1) | 36 |
1.09 (0.92–1.24) |
−0.56 (−1.07–0.001) |
NA |
| LSU, microscopy | 72 |
1.21 (1.08–1.38) |
0.06 (−0.23–0.46) |
P > 0.1 |
| LSUFC, microscopy | 72 |
0.96 (0.85–1.08) |
0.11 (−0.11–0.40) |
P > 0.1 |
P-value from cusum tests are indicated when sample size is greater than 50. Nonsignificant cusum results indicate a failure to reject a linear relationship.