Mercury concentrations in feathers of marine birds in Arctic Canada

被引：30

作者：

Mallory, Mark L. ^{[1
]}

Braune, Birgit M. ^{[2
]}

Provencher, Jennifer F. ^{[3
]}

Callaghan, D. Benjamin ^{[1
]}

Gilchrist, H. Grant ^{[2
]}

Edmonds, Samuel T. ^{[4
]}

Allard, Karel ^{[5
]}

O'Driscoll, Nelson J. ^{[4
]}

机构：

[1] Acadia Univ, Dept Biol, Wolfville, NS B4P 2R6, Canada

[2] Carleton Univ, Natl Wildlife Res Ctr, Environm Canada, Ottawa, ON K1A 0H3, Canada

[3] Carleton Univ, Dept Biol, Ottawa, ON K1A 0H3, Canada

[4] Acadia Univ, Dept Earth & Environm Sci, Wolfville, NS B4P 2R6, Canada

[5] Environm Canada, Sackville, NB E4L 1G6, Canada

来源：

MARINE POLLUTION BULLETIN | 2015年 / 98卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Arctic; Marine bird; Mercury; Ivory gull; Photodemethylation; FULMARS FULMARUS-GLACIALIS; NORTHERN FULMARS; PAGOPHILA-EBURNEA; SEABIRD FEATHERS; RISSA-TRIDACTYLA; STABLE-ISOTOPES; IVORY GULLS; FOOD-WEB; EGGS; TRENDS;

D O I：

10.1016/j.marpolbul.2015.06.043

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Mercury (Hg) concentrations are a concern in the Canadian Arctic, because they are relatively high compared to background levels and to similar species farther south, and are increasing in many wildlife species. Among marine birds breeding in the Canadian Arctic, Hg concentrations have been monitored regularly in eggs and intermittently in livers, but feathers have generally not been used as an indicator of Hg exposure or burden. We examined Hg concentrations in six marine bird species in the Canadian Arctic. Ivory gull Pagophila eburnea, feather Hg was exceptionally high, while glaucous gull Larus hyperboreus feather Hg was unexpectedly low, and ratios of feather THg to egg THg varied across species. The proportion of total Hg that was comprised of methyl Hg in ivory gull feathers was lower than in other species, and may be related to photo-demethylation or keratin breakdown in semi-opaque feather tissue. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：308 / 313

页数：6

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