title: Persistent organic pollutant and mercury concentrations in eggs of ground-nesting marine birds in the Canadian high Arctic.
abstract: We collected eggs of eight marine bird species from several colony sites in the Canadian high Arctic located at approximately 76°N and analyzed them for concentrations of legacy persistent organic pollutants (POPs) and mercury. We provide the first report on concentrations of POPs in eggs of three Arctic species (Thayer's gull Larus thayeri, Sabine's gull Xema sabini, Ross's Gull Rhodostethia rosea), and we found significant differences in each of the POP profiles among the five species with sufficient data for statistical comparisons (Thayer's gull, black guillemot Cepphus grylle, Sabine's gull, Arctic tern Sterna paradisaea and common eider Somateria mollissima borealis). The Ross's Gull had unexpectedly high POP concentrations relative to the other species examined, although this was based on a single egg, while glaucous gull Larus hyperboreus eggs from our sampling location had very low POPs. Sabine's gulls had the lowest Hg of the eggs studied, consistent with their low trophic position, but concentrations of their legacy POPs were higher than expected. We also noted that total hexachlorocyclohexanes were higher than reported elsewhere in the circumpolar Arctic in three species.
authors.affiliation: Department of Biology, Acadia University, Wolfville, Nova Scotia B4P 2R6, Canada.
authors.forename: Liam E
authors.initials: LE
authors.lastname: Peck
authors.affiliation: Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa, Ontario K1A 0H3, Canada.
authors.forename: H Grant
authors.initials: HG
authors.lastname: Gilchrist
authors.affiliation: Department of Environment, Government of Nunavut, Iqaluit, Nunavut X0A 0H0, Canada.
authors.forename: Conor D
authors.initials: CD
authors.lastname: Mallory
authors.affiliation: Environment Canada, National Wildlife Research Centre, Carleton University, Ottawa, Ontario K1A 0H3, Canada.
authors.forename: Birgit M
authors.initials: BM
authors.lastname: Braune
authors.affiliation: Department of Biology, Acadia University, Wolfville, Nova Scotia B4P 2R6, Canada. Electronic address: Mark.mallory@acadiau.ca.
authors.forename: Mark L
authors.initials: ML
authors.lastname: Mallory
mesh_terms: D000818:Animals; D001110:Arctic Regions; D001717:Birds / Q000378:metabolism*; D002170:Canada; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000378:metabolism*; D008628:Mercury / Q000378:metabolism*; D010063:Ovum / Q000378:metabolism*
chemical_list: D004785:Environmental Pollutants; D008628:Mercury
keywords: Canadian High Arctic; Marine birds; Mercury; Persistent organic pollutants