Pseudocalanus spp. in the Western Gulf of Maine
§In MARMAP surveys 1977 – 1987, Pseudocalanus spp. shows a seasonal cycle of abundance, with two population centers:
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§   Western Gulf of Maine
§   Georges Bank
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§Davis (1984) hypothesized the Western Gulf of Maine is a source region for the Georges Bank population
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§McGillicuddy et al. (1998) concluded that the populations are functionally distinct, with geographically-specific regions of growth and mortality
Color bars show concentration (# m-3)
From McGillicuddy et al. (1998)