The Drive to Ban the NOEC/LOEC in Favor of ECx is Misguided and Misinformed

ABSTRACT: Challenges to the use of the no observed effect concentration (NOEC) in ecotoxicology have appeared over the years, with a recent call for banning its use in favor of the x% effects concentration (ECx). This article presents an opposing view, providingmreasons for the continued use of the NOEC, and for hypothesis testing in general. Although the use of ECx values is appropriate inmma…