Knowledge Tree
Arctic cod
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A review of climate change impacts on migration patterns of marine ... frontiersin.org Oct 25, 2024 13 facts
referenceKessel et al. (2017) documented the first large-scale horizontal movements of individual Arctic cod (Boreogadus saida).
claimAtlantic cod (Gadus morhua) perform feeding migrations to Svalbard and the northern Barents Sea to the slopes of the Arctic Ocean, where they feed on capelin, Arctic cod, and other species.
claimArctic cod (Boreogadus saida) and polar cod (Arctogadus glacialis) are important forage fishes for predators in Arctic and Subarctic regions.
referenceThe population structure and feeding ecology of Arctic cod schools in the Canadian High Arctic were analyzed in a 1997 study by Hop, Welch, and Crawford.
claimCapelin compete with Arctic cod for some of the same zooplankton food sources in areas where their northern distributions overlap.
claimIncreased ship traffic and human activities in the Arctic are anticipated to affect the movement patterns of Arctic cod, seabirds, and marine mammals.
claimArctic cod (Boreogadus saida) perform seasonal movements inshore to shallow waters during summer for juvenile development, adult feeding, and pre-spawning schooling, while moving to deeper areas for spawning and overwintering below sea ice.
claimIn the Chukchi Sea, the migration of Arctic cod (Boreogadus saida) between nursery grounds as juveniles, feeding grounds as subadults, and spawning grounds as adults is linked to ice cover and seasonal production patterns.
referenceA. De Robertis, K. Taylor, C. D. Wilson, and E. V. Farley assessed the abundance and distribution of Arctic cod and other pelagic fishes over the U.S. continental shelf of the northern Bering and Chukchi seas in a 2017 study.
claimBeluga whales on the west side of Svalbard, which previously foraged almost exclusively on Arctic cod at tidewater glacier fronts and migrated along coastlines, now spend more time away from shore in fjords and occupy different water masses, likely to feed on small boreal fish species.
claimSaffron cod (Eleginus gracilis) are more demersal than Arctic cod (Boreogadus saida) and polar cod (Arctogadus glacialis), and they maintain a more southerly and nearshore distribution.
claimIvanova et al. (2020) found that shipping activities alter the movement and behavior of Arctic cod (Boreogadus saida), which is a keystone fish species in Arctic marine ecosystems.
claimIncreased numbers of Subarctic species in the Arctic can result in greater competition for resources, such as diet overlap, which potentially causes declines in endemic populations and alters ecosystem structure, as observed with Arctic cod in the Atlantic Arctic (Renaud et al., 2012; Christiansen, 2017).