Table 1. --Sample volumes (cc./lOO m. ) at each 

 sampling station in three areas along the 

 coast of the Gulf of Maine, 1965 and 1966 



[Kruskal-Wallis H and probability values are 

 listed for each area by season. See fig- 

 ure 1 for location of stations and areas] 



Phytoplankton clogged net; sample not suit- 

 able for measurement. 



Group and Species Composition 



Copepods were the dominant zooplankters 

 in the samples. In different seasons and 



WEST CENTRAL EAST 



Figure 3. — Mean annual volumes of zooplankton in Gulf of 

 Maine coastal areas in 1965 and 1966. Mann-Whitney 

 U values are given for between-years and within year 

 comparisons. 



years, their contribution to the total zoo- 

 plankton ranged from about 97 percent (winter 

 of both years) to 35 percent (summer of 

 1966). Ten other groups (taxa) constituted 

 more than 1 percent of the zooplankton in 

 each year (table 2); five were holoplanktonic 

 (appendicularians, pteropods, euphausiids, 

 cladocerans, and chaetognaths) and five were 

 meroplanktonic (fish eggs, crustacean eggs, 

 and larval cirripeds, decapods, and brachy- 

 urans). 



Seasonal abundance, expressed as mean 

 numbers of zooplankters per unit volume 

 per season, was similar among three of the 

 holoplanktonic groups--copepods, appendicu- 

 larians, and euphausiids. They increased from 

 a winter low to a summer maximum, and 

 declined in the fall (table 3). Chaetognaths 



