Abstract
The surface zooplankton have been examined at 42 locations throughout Tampa Bay during four seansonal surveys from fall of 1969 through summer of 1970. Thirty-seven taxa of holoplankton were identified. These were grouped according to abundance: Group I (grater than 1,000/m super(3)), Group II (100-1,000/m super(3)) and Group III (less than 100/m super(3)). Group I includes three species of copepods, Oithona colcarva, Acartia tonsa), and Paracalanus crassirostris , and the appendicularian Oikopleura dioica . A combination of these taxa accounted for an average of 60% of the total zooplanktonbiomass. Group II includes five species of copepods and one cladoceran. Together, these organisms comprised 5% of the total zooplankton biomass. Group III includes twenty-two additional species, most of which penetrated no further than mid-Tampa Bay.