Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas)
Limited information exists regarding contemporary and historical emissions for many anthropogenic chemicals, especially for contaminants of emerging concern (CECs). This study examined temporal trends of several perfluoroalkyl substances (PFASs), polybrominated diphenyl ethers (PBDEs), and hexabromo...
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Canadian Science Publishing
2018
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Online Access: | https://doi.org/10.1139/as-2017-0044 https://doaj.org/article/49630298efdc43219a32acc1ae75f8aa |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:49630298efdc43219a32acc1ae75f8aa 2023-05-15T14:22:18+02:00 Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) Tristan A. Smythe Lisa L. Loseto Anders Bignert Bruno Rosenberg Wesley Budakowski Thor Halldorson Kerri Pleskach Gregg T. Tomy 2018-09-01 https://doi.org/10.1139/as-2017-0044 https://doaj.org/article/49630298efdc43219a32acc1ae75f8aa en fr eng fre Canadian Science Publishing doi:10.1139/as-2017-0044 2368-7460 https://doaj.org/article/49630298efdc43219a32acc1ae75f8aa undefined Arctic Science, Vol 4, Iss 3, Pp 388-404 (2018) beaufort sea cumberland sound western hudson bay organic contaminants northern contaminants program envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.1139/as-2017-0044 2023-01-22T17:32:49Z Limited information exists regarding contemporary and historical emissions for many anthropogenic chemicals, especially for contaminants of emerging concern (CECs). This study examined temporal trends of several perfluoroalkyl substances (PFASs), polybrominated diphenyl ethers (PBDEs), and hexabromocyclododecanes (HBCDs) in three beluga whale (Delphinapterus leucas) populations from the Canadian Arctic [Hendrickson Island (HI), NT; Pangnirtung (PG), NU; and Sanikiluaq (SQ), NU] collected from 1982 to 2013. The confounding factors of animal size, age, and sex were included in the analyses, but were only significant for some CECs. The strongest temporal resolution was obtained from HI, which showed increasing trends in PBDEs (4.8%/year) and HBCDs (2.9%/year), and decreases in perfluoroalkylcarboxylic acids (PFCAs, −6.0%/year). Concentrations of perfluorooctanesulfonate (PFOS) were relatively stable between 1984 and 2010, increasing substantially in 2011; trends in perfluorooctanesulfonamide (PFOSA) concentrations were not strictly linear over the study period. PBDE, HBCD, and PFCA trends in the HI population were opposite/different to that of many other arctic animals (e.g., polar bears) for the same time period. Trends were inconsistent among locations, suggesting that regional differences in dietary exposure and/or sources may also impact these trends. The effects of climate-change-driven processes on the exposure and distribution of CECs are currently not well understood, highlighting a need for ongoing contaminant monitoring. Article in Journal/Newspaper Arctic Arctic Beaufort Sea Beluga Beluga whale Beluga* Climate change Cumberland Sound Delphinapterus leucas Hudson Bay Sanikiluaq Unknown Arctic Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Hendrickson Island ENVELOPE(-133.589,-133.589,69.500,69.500) Hudson Hudson Bay Pangnirtung ENVELOPE(-65.707,-65.707,66.145,66.145) Sanikiluaq ENVELOPE(-79.226,-79.226,56.541,56.541) Arctic Science |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English French |
topic |
beaufort sea cumberland sound western hudson bay organic contaminants northern contaminants program envir geo |
spellingShingle |
beaufort sea cumberland sound western hudson bay organic contaminants northern contaminants program envir geo Tristan A. Smythe Lisa L. Loseto Anders Bignert Bruno Rosenberg Wesley Budakowski Thor Halldorson Kerri Pleskach Gregg T. Tomy Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
topic_facet |
beaufort sea cumberland sound western hudson bay organic contaminants northern contaminants program envir geo |
description |
Limited information exists regarding contemporary and historical emissions for many anthropogenic chemicals, especially for contaminants of emerging concern (CECs). This study examined temporal trends of several perfluoroalkyl substances (PFASs), polybrominated diphenyl ethers (PBDEs), and hexabromocyclododecanes (HBCDs) in three beluga whale (Delphinapterus leucas) populations from the Canadian Arctic [Hendrickson Island (HI), NT; Pangnirtung (PG), NU; and Sanikiluaq (SQ), NU] collected from 1982 to 2013. The confounding factors of animal size, age, and sex were included in the analyses, but were only significant for some CECs. The strongest temporal resolution was obtained from HI, which showed increasing trends in PBDEs (4.8%/year) and HBCDs (2.9%/year), and decreases in perfluoroalkylcarboxylic acids (PFCAs, −6.0%/year). Concentrations of perfluorooctanesulfonate (PFOS) were relatively stable between 1984 and 2010, increasing substantially in 2011; trends in perfluorooctanesulfonamide (PFOSA) concentrations were not strictly linear over the study period. PBDE, HBCD, and PFCA trends in the HI population were opposite/different to that of many other arctic animals (e.g., polar bears) for the same time period. Trends were inconsistent among locations, suggesting that regional differences in dietary exposure and/or sources may also impact these trends. The effects of climate-change-driven processes on the exposure and distribution of CECs are currently not well understood, highlighting a need for ongoing contaminant monitoring. |
format |
Article in Journal/Newspaper |
author |
Tristan A. Smythe Lisa L. Loseto Anders Bignert Bruno Rosenberg Wesley Budakowski Thor Halldorson Kerri Pleskach Gregg T. Tomy |
author_facet |
Tristan A. Smythe Lisa L. Loseto Anders Bignert Bruno Rosenberg Wesley Budakowski Thor Halldorson Kerri Pleskach Gregg T. Tomy |
author_sort |
Tristan A. Smythe |
title |
Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
title_short |
Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
title_full |
Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
title_fullStr |
Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
title_full_unstemmed |
Temporal trends of brominated and fluorinated contaminants in Canadian Arctic beluga (Delphinapterus leucas) |
title_sort |
temporal trends of brominated and fluorinated contaminants in canadian arctic beluga (delphinapterus leucas) |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1139/as-2017-0044 https://doaj.org/article/49630298efdc43219a32acc1ae75f8aa |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) ENVELOPE(-133.589,-133.589,69.500,69.500) ENVELOPE(-65.707,-65.707,66.145,66.145) ENVELOPE(-79.226,-79.226,56.541,56.541) |
geographic |
Arctic Cumberland Sound Hendrickson Island Hudson Hudson Bay Pangnirtung Sanikiluaq |
geographic_facet |
Arctic Cumberland Sound Hendrickson Island Hudson Hudson Bay Pangnirtung Sanikiluaq |
genre |
Arctic Arctic Beaufort Sea Beluga Beluga whale Beluga* Climate change Cumberland Sound Delphinapterus leucas Hudson Bay Sanikiluaq |
genre_facet |
Arctic Arctic Beaufort Sea Beluga Beluga whale Beluga* Climate change Cumberland Sound Delphinapterus leucas Hudson Bay Sanikiluaq |
op_source |
Arctic Science, Vol 4, Iss 3, Pp 388-404 (2018) |
op_relation |
doi:10.1139/as-2017-0044 2368-7460 https://doaj.org/article/49630298efdc43219a32acc1ae75f8aa |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/as-2017-0044 |
container_title |
Arctic Science |
_version_ |
1766294941312483328 |