Ifetile 17, — Species of copepods identified from plankton samples in Cape Canaveral Area, T, _N. Gill cruises 1-V, 1953j by season and depth of 



water 



[Identifications by Thomas E. Bovman] 



Table 18. — Numbers of chaetognaths per 100 m.J of vater. Continental Shelf 



off Cape Canaver^ Area, from plankton samples (oblique or surface 

 tow, half-meter net), T. N. Gi^i. cruises igSS-S'+f by depth of 

 water and by season 



[Individual values are counts for separate samples] 

 0-gO fathoms 



Total 

 Average 



Total 

 Average 



O20 fathoms 

 20-100 fathoms 



Total 



No. of samples 



Average 



Winter 



10 



100 



li,970 



3,870 



Spring 

 1,760 



61(0 

 1,7^0 



570 

 2,750 

 8,830 



2,130 

 1>,780 

 Il>,l80 

 10,310 

 2,870 

 2,720 

 2,000 

 1»,800 



FaU 



ll*,5'<0 

 3,680 

 It, 500 



17,000 

 1,110 



6,i>70 



2,500 

 1,250.0 



3,170 

 792.5 



11,210 16,600 



1,868.3 It, 150.0 



0-100 fathoms 



Spring 



8,950 16,290 



2,500 3,170 



50,170 47,300 



11,210 16,600 



ll,it50 19,lt6o 61,380 63,900 



6 10 15 10 



1,908.3 l,9lt6.0 It, 092.0 6,390.0 



1953 and 1954. Their data which are pertinent 

 to the Cape Canaveral Area are given in table 



19 and presented in the discussions concerning 

 individual species as follows. 



Of the 12 species discussed by Pierce and 

 Wass, 9 occurred in both surface to 20 and 



20 to 100 fathoms, 1 occurred only in 20 to 

 100 fathoms, 6 most abundantly in 20 to 100 

 fathoms, and 2 most abundantly in surface to 

 20 fathoms. 



Sagitta enflata , the most abundant and widely 

 distributed chaetognath on the south Atlantic 

 coast (optimum conditions appear to be close 

 to the 20-fathom curve, near the coast and 

 farther offshore the numbers diminish), was 

 most abundant in the Cape Canaveral Area in 

 waters 20 to 100 fathoms. 



Sagitta tenuis , most abundant inshore, di- 

 minishes rapidly beyond the 10-fathom curve 

 and almost disappears in the Florida Current. 



Sagitta helenae , typically a Continental Shelf 

 species along the south Atlantic coast, ap- 

 peared in approximately equal numbers in 



31 



