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2a. Biological resources within oceans can be used in sustainable or…
2a. Biological resources within oceans can be used in sustainable or unsustainable ways (case study:Krill)
What are they?
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Inhabit the upper parts of the water column and are able to swim up and down but not against currents
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Human impacts on krill
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Mainly processed into products for direct consumption, animal food and bait
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Concern for it surrounding the 'boom and bust' pattern where large scale exploitation would be followed by a collapse. Seen in whales
Decrease of Krill linked to warming oceans as krill feed on algae on the under-side of the sea ice which is important to young Krill in winter
Management
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One aim is to regulate commercial interests in Krill it is trying to establish catch limits but the interests of the Krill fishing industry contest this
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krill trousers tend to operate in sheltered locations around Islands where dense concentrations are predictable although these are also the main foraging areas for predators