water volume filtered = 0.85 (Trr^h) ; r = 0.2m, h = 4630m. Catch per 

 square meter of ocean surface area (subsequently converted to catch per 

 10m2 in this case) was calculated by dividing the standardized number 

 caught by the ocean area corresponding to the volume filtered, after 

 equalizing the sampling effort at each depth to the standard of 5 min. 

 Standardization of effort, catch, and volume filtered is illustrated 

 in Figure 2. 



RESULTS 



Table 1 indicates how many larvae of each analyzed species were taken 

 during each cruise, the presence of unanalyzed taxa, and the number of 

 occurrences for all larval taxa and nine egg species. Table 2 is a summary 

 of data associated with each plankton collection. The following comments 

 are included to clarify certain entries in the table. 



1) Light condition - "dawn" or "dusk" was assigned if sunrise or sunset 

 occurred during any part of the 30-min tow. 



2) The mean temperatures and mean salinities were calculated from 

 measurements at 5-m depth intervals. Measurements within the 

 plankton sampling depths were multiplied by the meters of depth 

 they represented, the products were totaled, and the sum was 

 divided by the number of meters sampled by the Gulf V net. 



3) Values for temperature or salinity ranges were interpolated as 

 needed from the measurements at 5-m intervals. 



4) Water depth was calculated by averaging the fathometer depth at the 

 start and end of the plankton tow. 



