Status, Alert System, and Prediction of Cyanobacterial Bloom in South Korea

Table 2

Alert levels framework for algal bloom in South Korea.

Level	Caution	Warning	Outbreak
Chlorophyll-a (μg/L)	≥15	≥25	≥100
Cyanobacteria (cells/mL)	≥500	≥5,000	≥1,000,000
Monitoring interval (/week)	1	2	2