Rainfall, phycocyanin, and N:P ratios related to cyanobacterial blooms in a Korean large reservoir

摘要: Nutrient concentrations and other environmental factors were measured in the Daechung Reservoir for 25 weeks from spring until autumn 1999. The high irradiance after heavy rainfall provided optimal meteorological conditions bloom formation during summer, therefore, rain would also appear to forecast imminent bloom. was largely governed by cyanobacteria, particular, Microcystis spp. Anabaena Phycocyanin showed higher correlation with cyanobacteria (r = 0.744, P < 0.001) compared chlorophyll-a 0.599, 0.01). Therefore, phycocyanin more accurate useful than quantitatively measuring cyanobacterial blooms. atomic N:P ratio of particulate form a 0.541, 0.01), increasing 4.3 14.6 formation, while that dissolved decreased 25.5 8.7. These results indicated algae assimilated N significantly without comparable uptake blooming season, which sharp contrast excessive storage spring.