Table 2. — Percentage composition of zooplankton groups in coastal waters of the Gulf of Maine, 



1965 and 1966 



Group 



1965 



Winter 



Spring 



Summer 



Fall 



1966 



Winter 



Spring 



Summer 



Fall 



Holoplanlcton 



Amphipoda 



Appendicularia. 

 Chaetognatha. . . 



Cladocera 



Copepoda 



Euphausiacea. . . 



Isopoda 



Medusae 



Pteropoda 



Percent 



Meroplanlcton 



Annelida larvae 



Brachyura larvae 



Clrripedia larvae . . . . 



Crustacean eggs 



Crustacean nauplii . . . 



Decapoda larvae 



Echinodermata larvae. 



Fish eggs 



Gastropoda larvae.... 

 Pelecypoda larvae.... 

 Pycnogonoida 



1.3 



P 



96.9 



1.3 



P 

 P 

 P 



Percent 



P 

 2.1 



P 

 2.6 



7<i.<4 

 "4.6 



Percent 



Percent 



P 



P 



12.3 



P 



1.1 

 P 



1.6 



1.1 



P 



71.-4 



6.2 



P 

 P 



P 



1.5 



P 



10.9 



6.1 

 P 

 P 



P 



P 



2.1 



2.1 



91.6 



P 



1.0 



P 

 1.4 



P 

 P 

 P 



P 



P 



Percent 



1.9 



P 



97.3 



P 



Percent 



Percent 



P 

 3.7 



1.6 



72.4 



4.6 



P 

 P 



P 

 P 

 13.3 

 P 

 P 

 P 



1.7 

 P 



P 



27.4 



P 



1.9 



35.4 



3.4 



P 

 P 



P 

 1.8 



P 

 15.1 



P 

 4.8 



P 

 8.1 



P 



P 



Percent 



1.4 



1.5 

 12.1 

 76.8 



1.5 



P 

 P 



3.5 



P 

 P 

 P 

 P 

 P 



(P) Present, but representing less than one percent of the zooplankton in each season. 



Table 3. --Mean numbers of dominant zooplankton groups per 100 m. of water in each season. Gulf of 



Maine coastal waters, 1965 and 1966 



Group 



Year 



Season 



Winter 



Spring Summer 



Fall 



Holoplankton 

 Copepoda. . . 



Euphausiacea. . . 

 Chaetognatha. . . 

 Appendicularia. 



Cladocera 



Pteropoda 



Meroplankton 

 Fish eggs . . 



Crustacean eggs . . . 

 Cirripedia larvae. 

 Decapoda larvae... 

 Brachyura larvae . . 



1965 

 1966 

 1965 

 1966 

 1965 

 1966 

 1965 

 1966 

 1965 

 1966 

 1965 

 1966 



1965 

 1966 

 1965 

 1966 

 1965 

 1966 

 1965 

 1966 

 1965 

 1966 



2,496 



1,233 



31 



3 



34 



24 



