Table 1.
Resilience indicators before the bloom maximum on day of year 180 for the variables chlorophyll a, phycocyanin, and dissolved oxygen saturation
Resilience indicator | Chlorophyll | Phycocyanin | Dissolved oxygen saturation |
SD positive absolute slope | Yes (P < 0.001) | Yes (P < 0.001) | Yes (P < 0.001) |
SD positive relative slope | Yes (P < 0.001) | Yes (P < 0.001) | Yes (P < 0.001) |
SD day of first alarm | 175 | 165 | 173 |
SD no. of alarms | 2 | 5 | 2 |
AC day of first alarm | 176 | 163 | None |
AC no. of alarms | 2 | 3 | 0 |
Rising variance of the indicators was tested by whether the slope of the rolling window SD was positive and statistically significant at P < 0.05 before the bloom. Both the absolute values and the relative values (manipulated − reference) of the SDs were tested. The day of year of the first alarm and the number of alarms before the bloom maximum (DOY = 180) are also presented for the rolling window SDs and ACs.