Biomagnification of mercury in selected species from an Arctic marine food web in Svalbard

被引：125

作者：

Jaeger, Iris ^{[1
,2
]}

Hop, Haakon ^{[1
]}

Gabrielsen, Geir W. ^{[1
]}

机构：

[1] Norwegian Polar Res Inst, N-9296 Tromso, Norway

[2] Univ Tromso, Inst Biol, N-9037 Tromso, Norway

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2009年 / 407卷 / 16期

关键词：

Methyl mercury; Trophic level; Stable isotope; Kongsfjorden; European Arctic; PERSISTENT CHLORINATED HYDROCARBONS; NORTHWATER POLYNYA; CHEMICAL FORM; BARENTS SEA; TROPHIC RELATIONSHIPS; ORGANIC POLLUTANTS; STABLE-ISOTOPES; TEMPORAL TRENDS; TRACE-ELEMENTS; SEABIRDS;

D O I：

10.1016/j.scitotenv.2009.04.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Concentrations and biomagnification of total mercury (TotHg) and methyl mercury (MeHg) were studied in selected species from the pelagic food web in Kongsfjorden, Svalbard. Twelve species of zooplankton, fish and seabirds, were sampled representing a gradient of trophic positions in the Svalbard marine food web. TotHg and MeHg were analysed in liver, muscle and/or whole specimens. The present study is the first to provide MeHg levels in seabirds from the Svalbard area. The relative MeHg levels decreased with increasing levels of TotHg in seabird tissues. Stable isotopes of nitrogen (delta N-15) were used to determine the trophic levels and the rate of biomagnification of mercury in the food web. A linear relationship between mercury levels and trophic position was found for all seabird species combined and their trophic level, but there was no relationship within species. Biomagnification factors were all > 1 for both TotHg and MeHg, indicating biomagnification from prey to predator. TotHg levels in the different seabirds were similar to levels detected in the Kongsfjorden area in the 1990s. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：4744 / 4751

页数：8

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