In 2009, a Pacific Fisher was found dead of rodenticide poisoning, in a remote area where no such poisons should have been used. Dr. Mourad Gabriel of the Integral Ecology Research Center began investigating, finding more and more animals poisoned by anticoagulant rodenticides. For years the source of the poisons remained a mystery – until law enforcement personnel took him to trespass marijuana grow sites. Dr Gabriel tells that story and much more about the spread of poisons in areas far from human habitation or agriculture, and how the entire food web is being affected.
Lots more information is available at the IERC Website, including open-access publications and videos. This is an area of emerging research in a rapidly-changing landscape with social, political and economic implications. IERC also has a Facebook page.