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...
Published in: | Environment International |
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Online Access: | https://hdl.handle.net/11250/2726953 https://doi.org/10.1016/j.envint.2020.105618 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2726953 2023-05-15T16:28:02+02:00 Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers Sun, Jiachen Covaci, Adrian Bustnes, Jan Ove Jaspers, Veerle Helander, Björn Bårdsen, Bård-Jørgen Boertmann, David Dietz, Rune Labansen, Aili Lage Lepoint, Gilles Schulz, Ralf Malarvannan, Govindan Sonne, Christian Thorup, Kasper Tøttrup, Anders P. Zubrod, Jochen P. Eens, Marcel Eulaers, Igor 2020 application/pdf https://hdl.handle.net/11250/2726953 https://doi.org/10.1016/j.envint.2020.105618 eng eng Elsevier Environment International. 2020, 138 . urn:issn:0160-4120 https://hdl.handle.net/11250/2726953 https://doi.org/10.1016/j.envint.2020.105618 cristin:1820315 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 0 138 Environment International 105618 Peer reviewed Journal article 2020 ftntnutrondheimi https://doi.org/10.1016/j.envint.2020.105618 2021-02-10T23:35:03Z 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 legacy OCs in these subpopulations. Finally, our results demonstrate the usefulness of archived museum feathers in retrospective monitoring of spatiotemporal trends of legacy OCs using birds of prey as sentinels. publishedVersion This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed. Article in Journal/Newspaper Greenland Haliaeetus albicilla White-tailed eagle NTNU Open Archive (Norwegian University of Science and Technology) Greenland Norway Environment International 138 105618 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
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 legacy OCs in these subpopulations. Finally, our results demonstrate the usefulness of archived museum feathers in retrospective monitoring of spatiotemporal trends of legacy OCs using birds of prey as sentinels. publishedVersion This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed. |
format |
Article in Journal/Newspaper |
author |
Sun, Jiachen Covaci, Adrian Bustnes, Jan Ove Jaspers, Veerle Helander, Björn Bårdsen, Bård-Jørgen Boertmann, David Dietz, Rune Labansen, Aili Lage Lepoint, Gilles Schulz, Ralf Malarvannan, Govindan Sonne, Christian Thorup, Kasper Tøttrup, Anders P. Zubrod, Jochen P. Eens, Marcel Eulaers, Igor |
spellingShingle |
Sun, Jiachen Covaci, Adrian Bustnes, Jan Ove Jaspers, Veerle Helander, Björn Bårdsen, Bård-Jørgen Boertmann, David Dietz, Rune Labansen, Aili Lage Lepoint, Gilles Schulz, Ralf Malarvannan, Govindan Sonne, Christian Thorup, Kasper Tøttrup, Anders P. Zubrod, Jochen P. Eens, Marcel Eulaers, Igor Temporal trends of legacy organochlorines in different white-tailed eagle (Haliaeetus albicilla) subpopulations: A retrospective investigation using archived feathers |
author_facet |
Sun, Jiachen Covaci, Adrian Bustnes, Jan Ove Jaspers, Veerle Helander, Björn Bårdsen, Bård-Jørgen Boertmann, David Dietz, Rune Labansen, Aili Lage Lepoint, Gilles Schulz, Ralf Malarvannan, Govindan Sonne, Christian Thorup, Kasper Tøttrup, Anders P. Zubrod, Jochen P. Eens, Marcel Eulaers, Igor |
author_sort |
Sun, Jiachen |
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://hdl.handle.net/11250/2726953 https://doi.org/10.1016/j.envint.2020.105618 |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland Haliaeetus albicilla White-tailed eagle |
genre_facet |
Greenland Haliaeetus albicilla White-tailed eagle |
op_source |
0 138 Environment International 105618 |
op_relation |
Environment International. 2020, 138 . urn:issn:0160-4120 https://hdl.handle.net/11250/2726953 https://doi.org/10.1016/j.envint.2020.105618 cristin:1820315 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.envint.2020.105618 |
container_title |
Environment International |
container_volume |
138 |
container_start_page |
105618 |
_version_ |
1766017646274281472 |