Fig. 3
From: Cyanobacteria and their secondary metabolites in three freshwater reservoirs in the United Kingdom
Concentrations (ng/L) of individual cyanobacterial metabolites detected in September 2019 samples from Tophill Low reservoir. The relative proportions of major metabolite classes is present in the inset pie chart. Compounds marked with an asterisk (*) were substances quantified with reference standards or bioreagents; all other compounds were identified by suspect-screening and quantified as class-equivalents. Error bars represent the standard deviation of triplicate samples