Extended Data Fig. 5: Comparing the distribution of trends in phytoplankton seasonal metrics from three different methods of detection.

Here the significant (p < 0.05) decadal trends [1998 – 2022] in seasonal metrics are compared using three methods of detecting bloom phenology: the threshold method (this study) in dark blue, the cumulative sum method³⁵ (CumSum) in orange and the rate of change method³⁵ (Rate) in turquoise. On the left is the probability distributions (PDF) of the significant trends from each of the three methods and to the right is the cumulative distributions (CDF) from the three methods of the significant trends in bloom mean chl-a (a, b), bloom integrated chl-a (c, d), bloom initiation (e, f), bloom termination (g, h) and bloom duration (i, j).