Seasonal availability of abundant, energy-rich prey influences the abundance and diet of a marine predator, the Steller sea lion Eumetopias jubatus

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Ecosystem models show combined effects of fishing, predation, competition, and ocean productivity on Steller sea lions (Eumetopias jubatus) in Alaska (2006, background): “However, recent studies show that walleye pollock is consistently present in feeding areas such as Benjamin Island (SE Alaska) and constitute a reliable prey for Steller sea lions, being found in 86% of scats (Womble and Sigler 2006).”
Confusion reigns? A review of marine megafauna interactions with tidal-stream environments (2015, background): “…near the seabed and also target seasonally abundant, energy-rich pelagic prey species such as Pacific Herring (Clupea pallasii), Pacific eulachon (Thaleichthys pacificus) and capelin (Mallotus villosus; Womble & Sigler 2006), which often aggregate in high flow conditions (Sigler et al. 2004).”