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5.2.6 Outline the consequences of a global temperature rise on arctic ecosystems

IN SUMMARY Melting and reduction in sea ice due to increasing temperatures: loss of habitats Changes in ecosystems: predators such as the polar bear less able to hunt reduction in population of algae under sea ice impacting the arctic food web Redistribution of plant and animal species: mosquitos and robins move north possible increase in pest species woody shrubs in areas that used to be tundra Positive feedback : decomposition of detritus in tundra releases carbon dioxide and methane - enhancing their effects