with previous reports (NUSCo 1982a), and reflect the Inshore nature of 

 the species (Jeffries, 1962). Pseudocalanus minutus and T. longicornls 

 were more abundant offshore at NB while A. tonsa and C^. hamatus 

 abundances from EN and NB were not significantly different. Acartia 

 tonsa abundances were higher at night at both stations, while higher 

 night abundances of T^. longicornis were evident only at NB. 



The results of the harmonic regression analyses indicated that the 

 annual cycles of the dominant copepods were well described by this 

 technique. The regressions had R^ values of 0.62 (P. minutus, NB; T. 

 longicornis . EN) to 0.76 (A. tonsa , EN and NB) . The deviations of the 

 actual data from the model predictions were averaged annually and 

 standard errors calculated. Plots of these mean annual residuals 

 indicated that the observed abundance in Individual years did not, 

 deviate greatly from the average annual pattern described by the model. 



The dominant winter-spring copepod at MNPS, A. hudsonica (Fig. 2), 

 contributed between 5-24% (NB) and 8-A4% (EN) to the zooplankton 

 collected since 1976 and between 20% (NB) and 40% (EN) in 1983 (Table 1 

 and 2). After accounting for seasonal patterns, deviations from the 

 harmonic model suggested A^. hudsonica abundances were lowest in 1976 and 

 1982 and highest in 1977 and 1983 (Fig. 3). A trend of decreasing 

 annual abundances was also evident from the residuals of the 1977 

 through 1982 period. 



The dominant summer-fall copepod at MNPS, A. tonsa (Fig. 4), 

 contributed between 15-34% (EN) and 14-40% (NB) to the zooplankton since 

 1976, and between 27% (EN) and 35% (NB) in 1983 (Tables 1 and 2). 

 Variability of mean annual abundances was low (Fig. 5) . Highest 

 densities of A. tonsa were observed in 1983 (NB) (Table 2). 



The remaining important copepods included C^. hamatus , P^. minutus , 

 and T^. longicornis . Centropages hamatus was collected year round at 

 MNPS although highest densities were found in mid-winter and mid-summer 

 (Fig. 6). This species contributed between 6% (EN) and 10% (NB) in 1983 

 (Tables 1 and 2). Annual mean residuals were lowest in 1976 and 1982 

 (Fig. 7) , suggesting lower than normal abundances of C^. hamatus in those 

 years. Pseudocalanus minutus was found year round at MNPS, although 

 highest densities were observed in late winter and early spring (Fig. 

 8). Pseudocalanus minutus contributed between 4-18% (NB) and 4-12% (EN) 



