§In MARMAP surveys 1977 – 1987, Pseudocalanus spp. shows a seasonal cycle of abundance, with two
population centers:
§
§ Western Gulf of Maine
§ Georges Bank
§
§Davis (1984) hypothesized the Western Gulf of Maine is a source region for the
Georges Bank
population
§
§McGillicuddy et al. (1998) concluded that the
populations are
functionally distinct, with geographically-specific regions of growth and mortality