28' 

 00' 



27° 



30' 



33' 00' 

 I 











»1 





Figure 1. — Sampling locations in Tampa Bay and the adjacent Gulf of Mexico. 



nearly constant by maintaining a fixed engine 

 speed. The volume of the cylinder of water 

 strained through the net was determined to be 

 35 m.^ (calculated from the towing distance 

 and the area of the net mouth). Since no cor- 

 rection was made to adjust for the effects of 

 currents and clogging on the flow of water 

 through the net, the quantitative data are not 

 exact. 



Plankton samples were preserved immed- 



iately after their collection in 5 percent neu- 

 tralized formalin and stored in 30-oz. jars. 



Water temperature and water sample (for 

 salinity titration) were taken at the beginning 

 of each plankton tow. Temperature was read to 

 the nearest 0.1° C. with a thermister (Whit- 

 ney^ underwater thermometer, Model TC-5) . 



* References to trade names in this publication do not imply 

 endorsement of commercial i>rodncts. 



MACRO-ZOOPLANKTON IN TAMPA BAY AND ADJACENT GULF 



211 



