Tracking Extensive Portfolio of Cyanotoxins in Five-Year Lake Survey and Identifying Indicator Metabolites of Cyanobacterial Taxa

• DOI: 10.1021/acs.est.4c04813
• Publication Date: 2024-08-31T00:50:41Z
• Authors: Xuejian Wang; Simon Wullschleger; Martin Jones; Marta Reyes; Raphael Bossart; Francesco Pomati; Elisabeth M.-L. J...
• Keywords: Microcystins; Bacteria; Monitoring; Suspect Screening; Liquid Chromatography-Mass Spectrometry; Harmful Algal Bloom; Computer Simulations; Microcystin; Bacteria; Biomass; Computer Simulations; Liquid Chromatography-Mass Spectrometry; Metabolism; Microcystin; Suspect Screening; Monitoring; Cyanopepetides; Harmful Algal Bloom; Cyanobacteria; Lakes; Metabolism; Cyanopepetides; Biomass; Environmental Monitoring

Cyanobacterial blooms require monitoring, as they pose a threat to ecosystems and human health, especially by the release of toxins. Along with widely reported microcystins, cyanobacteria coproduce other bioactive metabolites; however, information about their dynamics in surface waters is sparse. We investigated across full bloom successions throughout five-year lake monitoring campaign (Greifensee, Switzerland) spanning 150 sampling dates. conducted extensive suspect screening cyanobacterial metabolites using database CyanoMetDB. Across all 850 samples, 35 regularly co-occurred. Microcystins were present 70% [d-Asp