Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers
Understanding the spatiotemporal patterns of legacy organochlorines (OCs) is often difficult because monitoring practices differ among studies, fragmented study periods, and unaccounted confounding by ecological variables. We therefore reconstructed long-term (1939–2015) and large-scale (West Greenl...
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ftdoajarticles:oai:doaj.org/article:efc479b0197041618f2042a68dabcacb 2023-05-15T16:27:36+02:00 Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers Jiachen Sun Adrian Covaci Jan Ove Bustnes Veerle L.B. Jaspers Björn Helander Bård-Jørgen Bårdsen David Boertmann Rune Dietz Aili Lage Labansen Gilles Lepoint Ralf Schulz Govindan Malarvannan Christian Sonne Kasper Thorup Anders P. Tøttrup Jochen P. Zubrod Marcel Eens Igor Eulaers 2020-05-01T00:00:00Z https://doi.org/10.1016/j.envint.2020.105618 https://doaj.org/article/efc479b0197041618f2042a68dabcacb EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S0160412019336475 https://doaj.org/toc/0160-4120 0160-4120 doi:10.1016/j.envint.2020.105618 https://doaj.org/article/efc479b0197041618f2042a68dabcacb Environment International, Vol 138, Iss , Pp - (2020) Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.1016/j.envint.2020.105618 2022-12-31T09:34:13Z Understanding the spatiotemporal patterns of legacy organochlorines (OCs) is often difficult because monitoring practices differ among studies, fragmented study periods, and unaccounted confounding by ecological variables. We therefore reconstructed long-term (1939–2015) and large-scale (West Greenland, Norway, and central Sweden) trends of major legacy OCs using white-tailed eagle (Haliaeetus albicilla) body feathers, to understand the exposure dynamics in regions with different contamination sources and concentrations, as well as the effectiveness of legislations. We included dietary proxies (δ13C and δ15N) in temporal trend models to control for potential dietary plasticity. Consistent with the hypothesised high local pollution sources, levels of polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs) in the Swedish subpopulation exceeded those in the other subpopulations. In contrast, chlordanes (CHLs) and hexachlorobenzene (HCB) showed higher concentrations in Greenland, suggesting the importance of long-range transport. The models showed significantly decreasing trends for all OCs in Sweden in 1968–2011 except for CHLs, which only decreased since the 1980s. Nevertheless, median concentrations of DDTs and PCBs remained elevated in the Swedish subpopulation throughout the 1970s, suggesting that the decreases only commenced after the implementation of regulations during the 1970s. We observed significant trends of increasing concentrations of PCBs, CHLs and HCB in Norway from the 1930s to the 1970s/1980s and decreasing concentrations thereafter. All OC concentrations, except those of PCBs were generally significantly decreasing in the Greenland subpopulation in 1985-2013. All three subpopulations showed generally increasing proportions of the more persistent compounds (CB 153, p.p′-DDE and β-HCH) and decreasing proportions of the less persistent ones (CB 52, p.p′-DDT, α- and γ-HCH). Declining trends of OC concentrations may imply the decreasing influence of ... Article in Journal/Newspaper Greenland Haliaeetus albicilla White-tailed eagle Directory of Open Access Journals: DOAJ Articles Greenland Norway Environment International 138 105618 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 |
spellingShingle |
Environmental sciences GE1-350 Jiachen Sun Adrian Covaci Jan Ove Bustnes Veerle L.B. Jaspers Björn Helander Bård-Jørgen Bårdsen David Boertmann Rune Dietz Aili Lage Labansen Gilles Lepoint Ralf Schulz Govindan Malarvannan Christian Sonne Kasper Thorup Anders P. Tøttrup Jochen P. Zubrod Marcel Eens Igor Eulaers Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
topic_facet |
Environmental sciences GE1-350 |
description |
Understanding the spatiotemporal patterns of legacy organochlorines (OCs) is often difficult because monitoring practices differ among studies, fragmented study periods, and unaccounted confounding by ecological variables. We therefore reconstructed long-term (1939–2015) and large-scale (West Greenland, Norway, and central Sweden) trends of major legacy OCs using white-tailed eagle (Haliaeetus albicilla) body feathers, to understand the exposure dynamics in regions with different contamination sources and concentrations, as well as the effectiveness of legislations. We included dietary proxies (δ13C and δ15N) in temporal trend models to control for potential dietary plasticity. Consistent with the hypothesised high local pollution sources, levels of polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs) and hexachlorocyclohexanes (HCHs) in the Swedish subpopulation exceeded those in the other subpopulations. In contrast, chlordanes (CHLs) and hexachlorobenzene (HCB) showed higher concentrations in Greenland, suggesting the importance of long-range transport. The models showed significantly decreasing trends for all OCs in Sweden in 1968–2011 except for CHLs, which only decreased since the 1980s. Nevertheless, median concentrations of DDTs and PCBs remained elevated in the Swedish subpopulation throughout the 1970s, suggesting that the decreases only commenced after the implementation of regulations during the 1970s. We observed significant trends of increasing concentrations of PCBs, CHLs and HCB in Norway from the 1930s to the 1970s/1980s and decreasing concentrations thereafter. All OC concentrations, except those of PCBs were generally significantly decreasing in the Greenland subpopulation in 1985-2013. All three subpopulations showed generally increasing proportions of the more persistent compounds (CB 153, p.p′-DDE and β-HCH) and decreasing proportions of the less persistent ones (CB 52, p.p′-DDT, α- and γ-HCH). Declining trends of OC concentrations may imply the decreasing influence of ... |
format |
Article in Journal/Newspaper |
author |
Jiachen Sun Adrian Covaci Jan Ove Bustnes Veerle L.B. Jaspers Björn Helander Bård-Jørgen Bårdsen David Boertmann Rune Dietz Aili Lage Labansen Gilles Lepoint Ralf Schulz Govindan Malarvannan Christian Sonne Kasper Thorup Anders P. Tøttrup Jochen P. Zubrod Marcel Eens Igor Eulaers |
author_facet |
Jiachen Sun Adrian Covaci Jan Ove Bustnes Veerle L.B. Jaspers Björn Helander Bård-Jørgen Bårdsen David Boertmann Rune Dietz Aili Lage Labansen Gilles Lepoint Ralf Schulz Govindan Malarvannan Christian Sonne Kasper Thorup Anders P. Tøttrup Jochen P. Zubrod Marcel Eens Igor Eulaers |
author_sort |
Jiachen Sun |
title |
Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
title_short |
Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
title_full |
Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
title_fullStr |
Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
title_full_unstemmed |
Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
title_sort |
temporal trends of legacy organochlorines in different white-tailed eagle (haliaeetus albicilla) subpopulations: a retrospective investigation using archived feathers |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.envint.2020.105618 https://doaj.org/article/efc479b0197041618f2042a68dabcacb |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland Haliaeetus albicilla White-tailed eagle |
genre_facet |
Greenland Haliaeetus albicilla White-tailed eagle |
op_source |
Environment International, Vol 138, Iss , Pp - (2020) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0160412019336475 https://doaj.org/toc/0160-4120 0160-4120 doi:10.1016/j.envint.2020.105618 https://doaj.org/article/efc479b0197041618f2042a68dabcacb |
op_doi |
https://doi.org/10.1016/j.envint.2020.105618 |
container_title |
Environment International |
container_volume |
138 |
container_start_page |
105618 |
_version_ |
1766016992545865728 |