Table 2. Percent occurrence of phyla in demersal traps. Samples were collected on 

 July 16-17, 1982 and are from both mesh and polyvinyl traps. The taxonomy is 

 according to Barnes (1980). 



Temporal Patterns 



The number of zooplankters migrating per hour for the various sampling 

 intervals is presented in table 1 and figure 1. Data from July 16-17 displayed 

 significant decreases (p _< 0.05; MWU, ST tests) in the total number of individuals 

 captured per hour between 0500 or 0600 and 1200 hours, and significant (p _< 

 0.05) increases between 1200 and 1800/1830 hours and between 1800/1830 and 1930 

 hours, followed by a significant (p <^ 0.05) decrease after 1930 hours. The 

 pattern differed somewhat when the cyclopoid copepod Oithona colcarva (Bowman) 

 was removed from analysis (fig. 1). 



There was no significant (p _< 0.05; MWU, ST tests) difference between the 

 2 days in the number of individuals migrating per hour for most time intervals 

 (fig. 1, table 1). Significantly more individuals (p _< 0.05; MWU, ST tests) 

 were captured on July 17 than on July 16 in both the intervals from 0030-0230 

 and 1200-1800/1830. When the samples were considered without 0^ colcarva , 

 numbers of zooplankters differed between days both in the intervals mentioned 

 above and at 0500-0600. 



Crustaceans made up the majority of the zooplankters captured by the traps, 

 although representatives of 11 phyla, including foraminifera, echinoderm larvae, 

 sipunculids, Amphioxus , and appendicularians also were collected (table 2). A 



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