TEMPERATURE AND THE DISTRIBUTION OF PARTICLES 



Gymnodinium flavum: The 6 0-10-64" F isotherms (fig. 11) 

 represented the area of most rapid thermal gradient and 

 were used to delineate the thermocline. The distribution 

 of G. flavum (fig. 12) corresponded closely in time and space 

 with this thermal barrier. Figure 20 depicts the distribu- 

 tion of G. flavum with characteristic isotherms superimposed. 

 Centers of highest population density were within the thermo- 

 cline (1800 6 July at 38 feet) or above it (0900 7 July at 15 

 feet). Thus, a positive correlation existed not only between 

 temperature and distribution but between transparency and 

 distribution. 



1800 



2200 



0200 0600 

 TIME (HOURS) 



1000 



1400 



Figure 20. Distribution of Gymnodinium flavum with temperature in red. 

 Operation I. 



37 



