Bioassays
The 11 diatom species were grown as either planktonic or benthic
cultures. Planktonic EC50values were derived fromLarras et al. (2012)
for each of the herbicides, except that of irgarol while planktonic EC10
values were derived from dose–response curves also obtained in the
context of this previous study. The irgarol/planktonic bioassays and all