Rapid Recovery of Buoyancy in Eutrophic Environments Indicates That Cyanobacterial Blooms Cannot Be Effectively Controlled by Simply Collapsing Gas Vesicles Alone

Many aquatic ecosystems are seriously threatened by cyanobacteria blooms; gas vesicles enable to form harmful cyanobacterial blooms rapidly. lake managers try control collapsing vesicle, but it is still unclear whether vesicle recovery will cause this method fail. Through the culture experiments of three cyanobacteria, was found that all with collapsed can rapidly regain buoyancy in a few days under nutrient-sufficient environments, and average content even 9% higher than initially. In contrast, nutrient-limited environments significantly worse. After experiments, phosphorus-limited only reach 49% initial value. The two non-nitrogen-fixing nitrogen-limited reached 38% different tropic levels similar content. These results indicate short-term. To long-term, deep lakes, should discharge vesicles’ into water. shallow disruption must be combined nutrient measures effectively blooms.