Figure 1. SSD curves of the 5 herbicides and details of species sensitivity ranking.

Curves are based on EC₅ values a), b), c), and EC₅₀ values d), e), f) for five herbicides grouped according to their mode of action. In b) and e) the code name in bold type corresponds to the isoproturon curve.Species references: FCVA: Fragilaria capucina var. vaucheriae; FRUM: Fragilaria rumpens; FULN: Fragilaria ulna; CRAC: Craticula accomoda; MAFO: Mayamaea fossalis; EOMI: Eolimna minima; NPAL: Nitzschia palea; ADMI: Achnanthidium minutissimum; CMEN: Cyclotella meneghiniana; ELSE: Encyonema silesiacum; GPAR: Gomphonema parvulum.