Climate Change-Contaminant Interactions in Arctic Food Webs

Date: February 24, 2021 4:00 pm (ET)


  • Melissa McKinney
    McGill University


Climate change is expected to impact species at high latitudes directly through physical changes to the environment and indirectly through changing interactions between species. Vertical interactions, also known as predator-prey interactions, are thought to be particularly important, and may also have downstream impacts for exposure to other environmental stressors, such as contaminants. A series of studies will be presented that highlight climate-driven species redistributions in the Arctic, as documented by monitoring predator diets via chemical tracers, and that illustrate a range of subsequent consequences for Arctic marine mammal exposures to contaminants. Findings underscore the need to consider multiple interacting stressors facing wildlife in a changing polar environment.