The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic
Accepted manuscript version, licensed CC BY-NC-ND 4.0. High levels of halogenated organic contaminants (HOCs) have been found in the marine predatory seabird great skua ( Stercorarius skua ) from breeding colonies in the Northeastern Atlantic, with large unexplained inter-colony variation. The prese...
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Online Access: | https://hdl.handle.net/10037/17302 https://doi.org/10.1016/j.envpol.2018.10.005 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17302 2023-05-15T15:44:50+02:00 The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic Leat, Eliza Helen Kelsey Bourgeon, Sophie Hanssen, Sveinn Are Petersen, Ævar Strøm, Hallvard Bjørn, Tor Harry Gabrielsen, Geir W. Bustnes, Jan Ove Furness, Robert W. Haarr, Ane Borgå, Katrine 2018-10-08 https://hdl.handle.net/10037/17302 https://doi.org/10.1016/j.envpol.2018.10.005 eng eng Elsevier Environmental Pollution (1987) Norges forskningsråd: 184830 info:eu-repo/grantAgreement/RCN/HAVKYST/184830/Norway/Factors of importance for bioaccumulation and effects of new and old POPs in a seabird top predator, the great skua// Leat, Bourgeon S, Hanssen SA, Petersen Æ, Strøm H, Bjørn TH, Gabrielsen GW, Bustnes JO, Furness RW, Haarr A, Borgå K. The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic. Environmental Pollution (1987). 2019;244:55-65 FRIDAID 1621042 doi:10.1016/j.envpol.2018.10.005 0269-7491 1873-6424 https://hdl.handle.net/10037/17302 openAccess ©2018 Elsevier Ltd. All rights reserved. VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2018 ftunivtroemsoe https://doi.org/10.1016/j.envpol.2018.10.005 2021-06-25T17:57:11Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. High levels of halogenated organic contaminants (HOCs) have been found in the marine predatory seabird great skua ( Stercorarius skua ) from breeding colonies in the Northeastern Atlantic, with large unexplained inter-colony variation. The present study aimed at analyzing if the HOCs occurrence in breeding great skuas in remote colonies was explained by local baseline food web exposure determined by long-range transport, or by ecological factors such as diet specialization and relative trophic position in the breeding area. The occurrence of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs) was analyzed in plasma of 204 adult great skuas collected over two years (2008 and 2009) and 5 colonies across the North-Atlantic from Shetland to Svalbard. The ΣHOCs levels in plasma ranged across two orders of magnitude, from 40 to 7600 ng/g (wet weight) and differed significantly across the great skua colonies. The variation in contaminant occurrence among colonies did not reflect long-range transport through a latitudinal or remoteness gradient, as the second northernmost colony (Bjørnøya), had the highest contaminant concentrations. No latitudinal or remoteness gradient was evident in the contaminant pattern among the colonies. The contaminant levels increased significantly with increasing δ 15 N values, and regurgitated pellets of undigested prey suggested that great skuas with higher δ 15 N values had a higher proportion of bird prey in their diet, mostly seabirds. In contrast, great skuas from colonies with lower δ 15 N and lower contaminant level fed mostly on fish. The enrichment of δ 13 C increased with decreasing δ 15 N and lower contaminant levels. Therefore, individual behavior of great skuas, such as migration strategies and diet specialization, rather than long-range transport and thus baseline food web exposure, explain among and within colony variance in contaminant occurrence. Article in Journal/Newspaper Bjørnøya Great skua North Atlantic Northeast Atlantic Stercorarius skua Svalbard University of Tromsø: Munin Open Research Archive Bjørnøya ENVELOPE(-67.250,-67.250,-68.151,-68.151) Svalbard Environmental Pollution 244 55 65 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Leat, Eliza Helen Kelsey Bourgeon, Sophie Hanssen, Sveinn Are Petersen, Ævar Strøm, Hallvard Bjørn, Tor Harry Gabrielsen, Geir W. Bustnes, Jan Ove Furness, Robert W. Haarr, Ane Borgå, Katrine The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. High levels of halogenated organic contaminants (HOCs) have been found in the marine predatory seabird great skua ( Stercorarius skua ) from breeding colonies in the Northeastern Atlantic, with large unexplained inter-colony variation. The present study aimed at analyzing if the HOCs occurrence in breeding great skuas in remote colonies was explained by local baseline food web exposure determined by long-range transport, or by ecological factors such as diet specialization and relative trophic position in the breeding area. The occurrence of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs) was analyzed in plasma of 204 adult great skuas collected over two years (2008 and 2009) and 5 colonies across the North-Atlantic from Shetland to Svalbard. The ΣHOCs levels in plasma ranged across two orders of magnitude, from 40 to 7600 ng/g (wet weight) and differed significantly across the great skua colonies. The variation in contaminant occurrence among colonies did not reflect long-range transport through a latitudinal or remoteness gradient, as the second northernmost colony (Bjørnøya), had the highest contaminant concentrations. No latitudinal or remoteness gradient was evident in the contaminant pattern among the colonies. The contaminant levels increased significantly with increasing δ 15 N values, and regurgitated pellets of undigested prey suggested that great skuas with higher δ 15 N values had a higher proportion of bird prey in their diet, mostly seabirds. In contrast, great skuas from colonies with lower δ 15 N and lower contaminant level fed mostly on fish. The enrichment of δ 13 C increased with decreasing δ 15 N and lower contaminant levels. Therefore, individual behavior of great skuas, such as migration strategies and diet specialization, rather than long-range transport and thus baseline food web exposure, explain among and within colony variance in contaminant occurrence. |
format |
Article in Journal/Newspaper |
author |
Leat, Eliza Helen Kelsey Bourgeon, Sophie Hanssen, Sveinn Are Petersen, Ævar Strøm, Hallvard Bjørn, Tor Harry Gabrielsen, Geir W. Bustnes, Jan Ove Furness, Robert W. Haarr, Ane Borgå, Katrine |
author_facet |
Leat, Eliza Helen Kelsey Bourgeon, Sophie Hanssen, Sveinn Are Petersen, Ævar Strøm, Hallvard Bjørn, Tor Harry Gabrielsen, Geir W. Bustnes, Jan Ove Furness, Robert W. Haarr, Ane Borgå, Katrine |
author_sort |
Leat, Eliza Helen Kelsey |
title |
The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
title_short |
The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
title_full |
The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
title_fullStr |
The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
title_full_unstemmed |
The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic |
title_sort |
effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, stercorarius skua, breeding across the northeast atlantic |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/17302 https://doi.org/10.1016/j.envpol.2018.10.005 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) |
geographic |
Bjørnøya Svalbard |
geographic_facet |
Bjørnøya Svalbard |
genre |
Bjørnøya Great skua North Atlantic Northeast Atlantic Stercorarius skua Svalbard |
genre_facet |
Bjørnøya Great skua North Atlantic Northeast Atlantic Stercorarius skua Svalbard |
op_relation |
Environmental Pollution (1987) Norges forskningsråd: 184830 info:eu-repo/grantAgreement/RCN/HAVKYST/184830/Norway/Factors of importance for bioaccumulation and effects of new and old POPs in a seabird top predator, the great skua// Leat, Bourgeon S, Hanssen SA, Petersen Æ, Strøm H, Bjørn TH, Gabrielsen GW, Bustnes JO, Furness RW, Haarr A, Borgå K. The effect of long-range transport, trophic position and diet specialization on legacy contaminant occurrence in great skuas, Stercorarius skua, breeding across the Northeast Atlantic. Environmental Pollution (1987). 2019;244:55-65 FRIDAID 1621042 doi:10.1016/j.envpol.2018.10.005 0269-7491 1873-6424 https://hdl.handle.net/10037/17302 |
op_rights |
openAccess ©2018 Elsevier Ltd. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.envpol.2018.10.005 |
container_title |
Environmental Pollution |
container_volume |
244 |
container_start_page |
55 |
op_container_end_page |
65 |
_version_ |
1766379204572610560 |