Ecological and spatial factors drive intra- and interspecific variation in exposure of subarctic predatory bird nestlings to persistent organic pollutants |
| |
| Institution: | 1. Ethology Research Group, Department of Biology, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium;2. Unit for Arctic Ecology, Norwegian Institute for Nature Research, FRAM — High North Research Centre for Climate and the Environment, Hjalmar Johansens Gate 14, 9296 Tromsø, Norway;3. Toxicological Centre, Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium;4. Unit for Terrestrial Ecology, Norwegian Institute for Nature Research, Tungasletta 2, 7485 Trondheim, Norway;5. Marine Genomics Research Group, Faculty of Biosciences and Aquaculture, University of Nordland, 8049 Bodø, Norway;6. Northern Populations and Ecosystems Research Group, Department of Arctic and Marine Biology, University of Tromsø, Dramsveien 201, 9037 Tromsø, Norway;7. Norwegian Institute for Air Research, FRAM — High North Research Centre for Climate and the Environment, Hjalmar Johansens Gate 14, 9296 Tromsø, Norway;8. Department of Bioscience, Arctic Research Centre, Faculty of Science and Technology, Aarhus University, Frederiksborgvej 399, P.O. Box 358, 4000 Roskilde, Denmark;1. Area of Toxicology, Department of Health Sciences, University of Murcia, Campus de Espinardo, 30100 Murcia, Spain;2. Section of Ecology, Department of Biology, University of Turku, 20014 Turku, Finland;3. Metapopulation Research Centre, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland;4. Natural Research Ltd, Hill of Brathens, Glassel, Banchory AB31 4BY, United Kingdom;5. Instituto de Investigación en Recursos Cinegéticos, CSIC-UCLM-JCCM, Ronda de Toledo 12, 13005 Ciudad Real, Spain;6. Departamento de Didáctica General y Didácticas Específicas, University of Alicante, E-03080 Alicante, Spain;7. Habitaq S.L., Avenida de Bilbao 8, Santiago de Compostela 15706, Spain;8. AMUS (Acción por el Mundo Salvaje), Finca las Minas, 06220 Villafranca De Los Barros - Badajoz, Spain;1. Norwegian Polar Institute, Fram Centre, NO-9296 Tromsø, Norway;2. Department of Arctic and Marine Biology, UiT The Arctic University of Norway, NO-9037 Tromsø, Norway;3. Department of Biology, University of Eastern Finland, FI-80101 Joensuu, Finland;4. Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432 Ås, Norway |
| |
| Abstract: | Top predators in northern ecosystems may suffer from exposure to persistent organic pollutants (POPs) as this exposure may synergistically interact with already elevated natural stress in these ecosystems. In the present study, we aimed at identifying biological (sex, body condition), ecological (dietary carbon source, trophic level) and spatial factors (local habitat, regional nest location) that may influence intra- and interspecific variation in exposure of subarctic predatory bird nestlings to polychlorinated biphenyl 153 (CB 153), polybrominated diphenyl ether 47 (BDE 47), dichlorodiphenyldichloroethylene (p,p′-DDE) and hexachlorobenzene (HCB). During three breeding seasons (2008–2010), we sampled body feathers from fully-grown nestlings of three ecologically distinct predatory bird species in subarctic Norway: Northern Goshawk (Accipiter gentilis), White-tailed Eagle (Haliaeetus albicilla) and Golden Eagle (Aquila chrysaetos). The present study analysed, for the first time, body feathers for both POPs and carbon (δ13C) and nitrogen (δ15N) stable isotopes, thus integrating the dietary carbon source, trophic level and POP exposure for the larger part of the nestling stage.Intraspecific variation in exposure was driven by a combination of ecological and spatial factors, often different for individual compounds. In addition, combinations for individual compounds differed among species. Trophic level and local habitat were the predominant predictors for CB 153, p,p′-DDE and BDE 47, indicating their biomagnification and decreasing levels according to coast > fjord > inland. Variation in exposure may also have been driven by inter-annual variation arisen from primary sources (e.g. p,p′-DDE) and/or possible revolatilisation from secondary sources (e.g. HCB). Interspecific differences in POP exposure were best explained by a combination of trophic level (biomagnification), dietary carbon source (food chain discrimination) and regional nest location (historical POP contamination).In conclusion, the combined analysis of POPs and stable isotopes in body feathers from fully-grown nestlings has identified ecological and spatial factors that may drive POP exposure over the larger part of the nestling stage. This methodological approach further promotes the promising use of nestling predatory bird body feathers as a non-destructive sampling strategy to integrate various toxicological and ecological proxies. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
