My research program focuses on investigating recruitment dynamics of key forage fish species and how these dynamics shape trophic and food web interactions in northern marine ecosystems. Forage species lie at the core of complex marine food webs, providing essential linkages among trophic levels. These short-lived fish species are characterized by high natural fluctuations in population size (~± 40%), driven by annual variability in the number of individuals surviving to reproduce, or recruitment. Mechanisms underlying recruitment dynamics are often unclear. Despite their critical role, forage fish comprise a third of the global marine fish catch, revealing an imminent need to identify factors driving recruitment dynamics as well as predator and food web responses to varying forage fish biomass. Many aspects of marine predator biology are influenced by forage fish biomass (e.g., foraging efficiency, reproductive success), but food web responses are less clear. Species interactions may change as forage fish biomass decreases, whereby a predator species’ ability to shift foraging strategies may be constrained by both direct and indirect interactions with other species. My lab investigates interactions of forage fish and multiple marine predators (seabirds, whales, fish) to understand predator-prey and food web dynamics. This research will increase our ability to maintain the long-term productivity of this northern marine ecosystem to sustain fisheries yields and conserve marine biodiversity.