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Regional Trends
  • Low Arctic species populations have increased between 1970 and 2004
  • Sub Arctic species peaked in the mid-1980s and have been on the decline ever since
  • Sub Arctic species show no overall change between 1970 and 2004
  • High Arctic species have decreased by an average of 26% between 1970 and 2004

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Arctic Boundaries Map
The Arctic as defined by the Conservation of Arctic Flora and Fauna (CAFF), and the High, Low and Sub Arctic regions according to floristic boundaries. The red dots represent vertebrate populations included in the ASTI data analysis. 965 time series for 306 species of birds, mammals and fish (35% of all known Arctic vertebrate species) were used to generate the Arctic Species Trend Index.

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