Friday, 6 January 2017

Pollutants in the Arctic environment are threatening polar bear health

Date: January 5, 2017
Source: Wiley


A new analysis has found that although the risk of persistent organic pollutants (POPs) in the Arctic environment is low for seals, it is 2 orders of magnitude higher than the safety threshold for adult polar bears and even more (3 orders of magnitude above the threshold) for bear cubs fed with contaminated milk.

Relative to the 1980s, a decrease in risk from legacy POPs is evident for bear cubs, mainly because of international control measures; however, the composition of POPs substantially changes, and the contribution of new POPs (particularly perfluorooctane sulfonate) is increasing.



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