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首页> 外文期刊>Polar biology >Contamination of ivory gulls (Pagophila eburnea) at four colonies in Svalbard in relation to their trophic behaviour
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Contamination of ivory gulls (Pagophila eburnea) at four colonies in Svalbard in relation to their trophic behaviour

机译：斯瓦尔巴群岛四个殖民地的象牙海鸥（Pagophila eburnea）的营养行为相关污染

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摘要

The ivory gull (Pagophila eburnea) is a high-Arctic species considered endangered in most parts of its breeding range. Ivory gulls must cope with not only the reduction in sea ice cover triggered by climate change but also increasing contaminant loads due to changes in global contaminant pathways and the release of previously stored pollutants from melting snow and ice. This top predator may be affected by biomagnification processes of a variety of compounds with concentrations dramatically increasing from water to higher trophic levels. The objective of this study was therefore to assess the contaminant bioaccumulation of this species in four colonies located on Barentsoya, Svalbard, in link with its trophic behaviour. To that end, contaminants, including organochlorines (OCs), brominated flame retardants (BFRs), and perfluorinated alkyl substances (PFASs), were determined in the blood (plasma and whole blood) of ivory gulls sampled over several years. Carbon- and nitrogen-stable isotopes were also determined in different tissues (feathers, plasma and red blood cells, or whole blood) to infer the trophic level (delta N-15) and feeding habitat (delta C-13) during both the breeding and moulting periods. The most quantitatively abundant contaminants found in the ivory gull were p,p'-DDE (dichlorodiphenyldichloroethylene), I PCB pound (polychlorobiphenyl), and PFOS (perfluorooctane sulphonate). Several compounds including most of the PFASs, trans-nonachlor, cis-nonachlor, and BDE-28 were correlated with nitrogen values. This study highlighted variability in trophic behaviour among individuals during the breeding and the moulting periods. Overall, similar feeding habitats and strategies were used between breeding sites which was echoed by similar contaminant levels.
机译：象牙鸥（Pagophila eburnea）是高北极物种，在其繁殖范围的大部分区域都被视为濒危物种。象牙海鸥不仅必须应对气候变化引发的海冰覆盖减少，还必须应对由于全球污染物路径的变化以及融化的雪和冰释放先前存储的污染物而增加的污染物负荷。这种顶级捕食者可能会受到各种化合物的生物放大作用的影响，其浓度从水急剧增加到更高的营养水平。因此，本研究的目的是评估该物种在斯瓦尔巴特群岛巴伦索亚的四个殖民地的污染物生物蓄积及其营养行为。为此，在几年来采样的象牙海鸥的血液（血浆和全血）中确定了包括有机氯（OC），溴化阻燃剂（BFR）和全氟烷基物质（PFAS）在内的污染物。还确定了不同组织（羽毛，血浆和红细胞或全血）中碳和氮的稳定同位素，以推断两种繁殖期间的营养水平（δN-15）和觅食栖息地（δC-13）和换羽期。在象牙鸥中发现的数量最多的污染物是p，p'-DDE（二氯二苯基二氯乙烯），I PCB磅（聚氯联苯）和PFOS（全氟辛烷磺酸盐）。包括大多数PFAS，反式-六氯，顺式-六氯和BDE-28在内的几种化合物与氮值相关。这项研究强调了在繁殖和换羽期个体间营养行为的变异性。总体而言，在繁殖地点之间使用了相似的觅食生境和策略，相似的污染物水平也呼应了它们。

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  • 来源
    《Polar biology》 |2017年第4期|917-929|共13页
  • 作者

    Lucia Magali; Strom Hallvard; Bustamante Paco; Herzke Dorte; Gabrielsen Geir W.;

  • 作者单位

    Norwegian Polar Res Inst, FRAM High North Res Ctr Climate & Environm, Postbox 6606, N-9296 Tromso, Norway;

    Norwegian Polar Res Inst, FRAM High North Res Ctr Climate & Environm, Postbox 6606, N-9296 Tromso, Norway;

    Univ La Rochelle, Littoral Environm & Soc LIENSs, CNRS, UMR 7266, 2 Rue Olympe Gouges, F-17000 La Rochelle, France;

    Norwegian Inst Air Res, FRAM High North Res Ctr Climate & Environm, N-9296 Tromso, Norway;

    Norwegian Polar Res Inst, FRAM High North Res Ctr Climate & Environm, Postbox 6606, N-9296 Tromso, Norway;

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  • 正文语种 eng
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  • 关键词

    Ivory gull; Perfluorinated alkyl substances; Persistent organic pollutants; Arctic; Isotopes;

    机译：象牙鸥;全氟烷基物质;持久性有机污染物;北极;同位素;

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