demonstrated that P. parvum was not ichthyotoxic at pH 7 and below, but became consistently more toxic to fish at higher pH levels in studies at salinities typical of marine/estuarine ecosystems
demonstrated that P. parvum was notichthyotoxic at pH 7 and below, but became consistently moretoxic to fish at higher pH levels in studies at salinities typical ofmarine/estuarine ecosystems