Concentrations of persistant organic pollutants in Great skua eggs (Stercorarius skua) from Shetland 1980 and 2008 ...

• Main Authors: Leat, Eliza HK, Bourgeon, Sophie, Borgå, Katrine, Strøm, Hallvard, Hanssen, Sveinn Are, Gabrielsen, Geir W, Petersen, Ævar, Olafsdottir, Kristin, Magnusdottir, Ellen, Fisk, Aaron T, Ellis, Sandra, Bustnes, Jan Ove, Furness, Robert W
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: Biological sample; International Polar Year 2007-2008 IPY; Great skua; International Polar Year; IPY; North Atlantic; Stercorarius skua
• Online Access: https://dx.doi.org/10.1594/pangaea.815229; https://doi.pangaea.de/10.1594/PANGAEA.815229

Concentrations of POPs in Great skua eggs from Shetland are among the highest in North Atlantic seabirds, with up to 11,600 µg/kg (ww) DDE and up to 17,900 µg/kg ww SumPCB. Concentrations of legacy POPs were significantly lower in 2008 than 1980. Decreases were greatest for least persistent compounds. Median SumPBDEs increased from 99 µg/kg ww in 1980 to 173 µg/kg ww in 2008. There were changes in Great skua breeding season diet, with more adult Herring and Mackerel and less Sandeel. These changes increase exposure to POPs, since Herring and Mackerel accumulate more POPs than Sandeels. In both years, eggs with higher d15N had higher POP concentrations. In 1980, birds feeding more on demersal discard fish from trawl fisheries and less on Sandeels, had higher POP levels in eggs. In 2008, individuals feeding more on Herring and Mackerel, and less on discards, had higher POP levels in eggs. ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...