Northern Gannet PCDDs and PCDFs_Fou de Bassan dioxines et furan polychlorés.csv (English, French)

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Publisher-reported update

2024-12-18

Environment and Climate Change Canada (ECCC) has been monitoring levels of persistent organic pollutants and heavy metals in seabird eggs collected from the St. Lawrence River and Gulf of St. Lawrence, Canada, since the end of 1960s. Two sentinel species were selected to monitor aquatic ecosystem health and contamination based on their elevated position in the food web and relatively limited feeding range; the northern gannet (Morus bassanus) and the great blue heron (Ardea herodias) (Champoux et al., 2002; 2006; 2010; 2015; 2016 – available in supplemental information section *). Current avian monitoring is completed as part of the St. Lawrence Action Plan (2011-2026), a Canada-Quebec agreement that aims to conserve, restore, protect, and enhance the St. Lawrence (https://planstlaurent.qc.ca/en.html). Pollutants monitored include legacy organochlorine pesticides (e.g. DDT, dieldrin, and mirex), polychlorinated biphenyls (PCBs), brominated flame retardants (e.g. polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane), dioxins and furans, and metals (mercury and selenium). Some of these compounds are now regulated under various national (the Canadian Environmental…

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