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There is concern that catch limits are based on inaccurate data. Emerging technologies help scientists monitor krill more effectively. Krill form dense schools … Keystone species, because of their proportionately large influence on species diversity and community structure, have become a popular target for conservation efforts. Krill use in aquaculture supports our demand for fish in our diet, a food item that continues to gain popularity for all the health benefits associated with its consumption. Keystone species are pillars of ecosystem. The reasoning is sound: protect one, key species and in doing so stabilize an entire community. Krill pigments also give salmon flesh its characteristic pink color. Finally, krill are a keystone species of the Antarctic ecosystem, one that cannot be replaced. According to University of Colorado environmental scientist Cassandra Brooks, krill are the Southern Ocean’s keystone species since so many organisms feed on them, such as whales, penguins, seabirds, fishes, and seals. Antarctic krill is the keystone species of the Antarctic ecosystem beyond the coastal shelf, and provides an important food source for whales, seals, leopard seals, fur seals, crabeater seals, squid, icefish, penguins, albatrosses and many other species of birds. Such species help to maintain local biodiversity within a community either by controlling populations of other species that would otherwise dominate the community or by providing critical resources for a wide range of species. The Antarctic marine ecosystem is defined by the presence of Antarctic krill, Euphausia superba. A keystone marine species in the Antarctic Peninsula may be at risk due to overfishing and climate change. It “Krill is literally the keystone species in the Southern Ocean,” said Cassandra Brooks, an environmental scientist at the University of Colorado, Boulder. We focus on species that are dependent upon Antarctic krill, such as fur seals. BACKGROUND: The Antarctic krill Euphausia superba is a keystone species in the Antarctic food chain. The Pinniped Research Program at Cape Shirreff monitors the population status, reproductive success, and foraging ecology of Antarctic pinnipeds. Keystone Species Definition. Krill are more than the keystone species in the Southern Ocean food web; they also deposit carbon in the deep ocean. Rockfish, seabirds, and a myriad of lesser known species all depend on krill. Keystone species Importance and 17 best examples of keystone species. These incredibly minute crustaceans feed on phytoplankton, which is extremely rich in nutrients such as amino acids, antioxidants, carotenoids, bioflavonoids and omega-3,6 fatty acids. Keystone species are those that have a disproportionately large impact on their community or ecosystem relative to their abundance (Power et al., 1996). Selected References “Literally so many things feed on it. Krill … The Importance of and Threats To Krill. Wind and solar powered ocean drones known as Saildrones are attempting the first autonomous circumnavigation of Antarctica. Wolves exert both direct and indirect effects on their ecosystem; influencing their prey, their prey influencing the plant and animal species beneath them, and so forth down the chain. And a loss of this keystone species would be devastating for the Antarctic’s marine ecosystem. Keystone species are those which have an extremely high impact on a particular ecosystem relative to its population.Keystone species are also critical for the overall structure and function of an ecosystem, and influence which other types of plants and animals make up that ecosystem. This top-down cascade of effects exists alongside bottom-up effects, all within the same ecosystem. Antarctic Krill are a 'keystone' species. For this reason, wolves are considered a keystone species. ton (animals), krill populations expand and by being eaten by other marine animals, transfer energy from the lowest (primary producer) level into the upper levels of the marine food web. Krill: a keystone species. As the largest source of biomass in the Southern Ocean, krill play a major part in nutrient cycling by storing and transporting carbon and iron. Antarctic krill use intensive searching and rapid feeding techniques to take advantage of high plankton concentrations. At Cordell Bank, krill are a major food source for salmon. (Image: Stuart Newman) Krill are definitely worth worrying about. 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