Factors influencing mercury exposure in Arctic-breeding shorebirds

Bibliographische Detailangaben
Veröffentlicht in:	Ecotoxicology (London, England). - 1992. - 32(2023), 8 vom: 24. Okt., Seite 1062-1083
1. Verfasser:	Perkins, Marie (VerfasserIn)
Weitere Verfasser:	Stenhouse, Iain J, Lanctot, Richard B, Brown, Stephen, Bêty, Joël, Boldenow, Megan, Cunningham, Jenny, English, Willow, Gates, River, Gilchrist, H Grant, Giroux, Marie-Andrée, Grond, Kirsten, Hill, Brooke, Kwon, Eunbi, Lamarre, Jean-Francois, Lank, David B, Lecomte, Nicolas, Pavlik, David, Rausch, Jennie, Regan, Kevin, Robards, Martin, Saalfeld, Sarah T, Smith, Fletcher, Smith, Paul A, Wilkinson, Bradley, Woodard, Paul, Basu, Niladri
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2023
Zugriff auf das übergeordnete Werk:	Ecotoxicology (London, England)
Schlagworte:	Journal Article Arctic Avian Bioindicators Mercury exposure Shorebird Wildlife Mercury FXS1BY2PGL

Beschreibung
Zusammenfassung:	© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. Mercury (Hg) pollution remains a concern to Arctic ecosystems, due to long-range transport from southern industrial regions and melting permafrost and glaciers. The objective of this study was to identify intrinsic, extrinsic, and temporal factors influencing Hg concentrations in Arctic-breeding shorebirds and highlight regions and species at greatest risk of Hg exposure. We analyzed 1094 blood and 1384 feather samples from 12 shorebird species breeding at nine sites across the North American Arctic during 2012 and 2013. Blood Hg concentrations, which reflect Hg exposure in the local area in individual shorebirds: 1) ranged from 0.01-3.52 μg/g ww, with an overall mean of 0.30 ± 0.27 μg/g ww; 2) were influenced by species and study site, but not sampling year, with birds sampled near Utqiaġvik, AK, having the highest concentrations; and 3) were influenced by foraging habitat at some sites. Feather Hg concentrations, which reflected Hg exposure from the wintering grounds: 1) ranged from 0.07-12.14 μg/g fw in individuals, with an overall mean of 1.14 ± 1.18 μg/g fw; and 2) were influenced by species and year. Most Arctic-breeding shorebirds had blood and feather Hg concentrations at levels where no adverse effects of exposure were predicted, though some individuals sampled near Utqiaġvik had Hg levels that would be considered of concern. Overall, these data increase our understanding of how Hg is distributed in the various shorebird breeding areas of the Arctic, what factors predispose Arctic-breeding shorebirds to Hg exposure, and lay the foundation for future monitoring efforts
Beschreibung:	Date Completed 06.11.2023 Date Revised 06.11.2023 published: Print-Electronic Citation Status MEDLINE
ISSN:	1573-3017
DOI:	10.1007/s10646-023-02708-w