Search results
Results from the WOW.Com Content Network
Boreogadus saida, known as the polar cod [1] [2] [3] or as the Arctic cod, [1] [4] [5] is a fish of the cod family Gadidae, related to the true cod (genus Gadus). Another fish species for which both the common names Arctic cod and polar cod are used is Arctogadus glacialis .
Arctogadus glacialis, known also with ambiguous common names Arctic cod [1] [2] and polar cod, [1] [3] is an Arctic species of fish in the cod family Gadidae, related to the true cod (genus Gadus). Arctogadus glacialis is found in icy water. They grow to about 30 cm long, and are favorite food of narwhals and other arctic whales.
Acidification threatens to destroy Arctic food webs from the base up. Arctic waters are changing rapidly and are advanced in the process of becoming undersaturated with aragonite. [108] Arctic food webs are considered simple, meaning there are few steps in the food chain from small organisms to larger predators.
The northeast Arctic cod also shows cannibalistic behaviour. In 2012 the biomass of the Northeast Atlantic cod stock was estimated to be at an all-time high since scientists started observing stock status some 100 years ago. The North Sea cod stock is primarily fished by European Union member states and Norway.
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
Inuit are under the belief that if they do not follow the alliances that their ancestors have laid out, the animals will disappear because they have been offended and will cease to reproduce. [35] All saltwater animals, including seals, are considered to be always thirsty and are therefore offered a drink of fresh water as they die. This is ...
It contains several commercially important fishes, including the cod, haddock, whiting, and pollock. Most gadid species are found in temperate waters of the Northern Hemisphere , but several range into subtropical, subarctic , and Arctic oceans, and a single ( southern blue whiting ) is found in the Southern Hemisphere .
Declines in the duration and extent of sea ice in the Arctic leads to declines in the abundance of ice algae, which thrive in nutrient-rich pockets in the ice. These algae are eaten by zooplankton, which are in turn eaten by Arctic cod, an important food source for many marine mammals, including seals. Seals are eaten by polar bears.