Based on observations in the present study, it appears likely
that site-specific pH can influence the development of P. parvum
blooms by altering toxin(s) potency. In Texas, P. parvum blooms are
not observed in impoundments with pH levels of circumneutral
pH. For example, though P. parvum is present in surface waters of
east Texas, fish kills attributed to P. parvum have not been reported