Average percentage of oiled guillemots from 1997 to 2002

  • Definition : Percentage of oiled guillemots from the total number of guillemots found on beaches during winter surveys, averaged between 1997 and 2002, by sub-region.
  • Calculation : Sum of the number of oiled guillemots (Uria aalge) found on monitored beaches from 1997 to 2002 divided by sum of total number of guillemots from 1997 to 2002 during winter beach surveys, multiplied by 100
  • Unit : Percentage
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    Last modified on 14/09/2007
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