Pm, Os
Cf, Pn
Cf, Pn
Ch, Ct, Tl
Ct
Cf:  Calanus finmarchicus
Ps:  Pseudocalansu spp.
Pm: Pseudocalanus moultoni
Pn:  Pseudocalanus newmani
Os:  Oithona spp.
Ch:  Centropages hamatus
Ct:   Centropages typicus
Tl:    Temora longicornis
Yellow:  abundant in summer/fall
White: abundant in winter/spring
Food-limit
Resting egg
Cf
Ps
Os
Ch
Ct
Tl
x
x
x
x
x
x
Egg carrier
x
x
(Based on Durbin&Casas, 2006)
- Two groups
- Different external sources
- Peak in different season
- Difference in vital rates
Conceptual Model
Group 1: have outside source,
              different outside source, Pm: from west coast, Pn: from central GoM and NSS
              different food-limitation
              different spawning strategy
Question is: for Ps, if no outside source, if food is limit, what the pattern will look like