Life cycles and overwintering of filamentous, nitrogen-fixing cyanobacteria in the Baltic Sea

Short description of the project

Life cycles of the Baltic Sea bloom-forming cyanobacteria are, apart from the bloom period, still poorly known. Many phytoplankton species produce specialized resting cells to escape conditions adverse for vegetative growth, and the extent of the ‘seed bank’ accumulated on the seafloor may greatly affect bloom magnitude. This three-year project will combine experimental studies with intensive monitoring of cyanobacteria and modelling, aiming at year-round quantification of planktonic cyanobacteria and studying the environmental factors affecting akinete formation and germination. Knowledge of the complete life cycle of the bloom-forming cyanobacteria and of the environmental factors affecting the different life cycle stages is crucial for bloom prediction and management. Data concerning the magnitude and location of the overwintering stock will lead to more reliable bloom forecasts than physico-chemical data alone.

More information

Sanna Suikkanen, Finnish Environment Institute SYKE,

Published 2013-04-22 at 15:00, updated 2013-04-12 at 15:21