Expansion of HAB problems in the US
These
maps depict the HAB outbreaks known before (top) and after (bottom) 1972. This
is not meant to be an exhaustive compilation of all events, but rather an
indication of major or recurrent HAB episodes. In addition to the toxic imapcts
shown, harmful micro- and macroalgal species have caused whale and other marine
mammal mortalities, occasional anoxia, habitat destruction, and a general
decline in coastal aesthetics in many coastal areas during the last 20 years.
Neurotoxic shellfish poisoning = NSP, paralytic shellfish poisoning = PSP, and
amnesic shellfish poisoning = ASP. From Anderson ,1995