Unlocking Kautsky?s dark box: development of an optical toxicity classification tool (OPTOX index) with marine diatoms exposed to emerging contaminants - Duarte, Bernardo; Feijão, Eduardo; Cruz de Carvalho, Ricardo; Franzitta, Marco; Carlos Marques, João; Caçador, Isabel; Cabrita, Maria Teresa; Fonseca, Vanessa F. (2021)