Perfluoroalkyl substance concentrations in a terrestrial raptor: Relationships to environmental conditions and individual traits

Bustnes, Jan Ove; Bangjord, Georg; Ahrens, Lutz; Herzke, Dorte; Yoccoz, Nigel G.

doi:10.1002/etc.2782

Cited by 23 publications

(15 citation statements)

References 40 publications

(56 reference statements)

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“…Interestingly, the difference between 2015 and 2016 in PFAS plasma concentrations in the present study also corresponds with reports on PFASs in air, where higher concentrations of several PFASs were found at three monitoring stations in Norway in 2015 compared to 2016 (Bohlin-Nizzetto et al, 2017;. Thus, yearly differences in long range transport of PFASs and its precursors may play a role, as they can be subsequently taken up into the food web (Houde et al, 2011) and their top predators (Bustnes et al, 2015). To our knowledge, there are no significant PFAS sources at the two locations that may influence PFASs concentrations in the whitetailed eagle nestlings.…”

Section: Spatial Variationsupporting

confidence: 89%

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Plasma concentrations of organohalogenated contaminants in white-tailed eagle nestlings – The role of age and diet

Løseth

Briels

Eulaers

et al. 2019

Environmental Pollution

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Concentrations of organohalogenated contaminants (OHCs) can show significant temporal and spatial variation in the environment and wildlife. Most of the variation is due to changes in use and production, but environmental and biological factors may also contribute to the variation. Nestlings of top predators are exposed to maternally transferred OHCs in the egg and through their dietary intake after hatching. The present study investigated spatial and temporal variation of OHCs and the role of age and diet on these variations in plasma of Norwegian white-tailed eagle (Haliaeetus albicilla) nestlings. The nestlings were sampled at two locations, Smøla and Steigen, in 2015 and 2016. The age of the nestlings was recorded (range: 44 e 87 days old) and stable carbon and nitrogen isotopes (d 13 C and d 15 N) were applied as dietary proxies for carbon source and trophic position, respectively. In total, 14 polychlorinated biphenyls (PCBs, range: 0.82 e 59.05 ng/mL), 7 organochlorinated pesticides (OCPs, range: 0.89 e 52.19 ng/ mL), 5 polybrominated diphenyl ethers (PBDEs, range: 0.03 e 2.64 ng/mL) and 8 perfluoroalkyl substances (PFASs, range: 4.58 e 52.94 ng/mL) were quantified in plasma samples from each location and year. The OHC concentrations, age and dietary proxies displayed temporal and spatial variations. The age of the nestlings was indicated as the most important predictor for OHC variation as the models displayed significantly decreasing plasma concentrations of PCBs, OCPs, and PBDEs with increasing age, while concentrations of PFASs were significantly increasing with age. Together with age, the variations in PCB, OCP and PBDE concentrations were also explained by d 13 C and indicated decreasing concentrations with a more marine diet. Our findings emphasise age and diet as important factors to consider when investigating variations in plasma OHC concentrations in nestlings.

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Section: Spatial Variationsupporting

confidence: 89%

“…Most of these variations are due to changes in production and use of the compounds (Hung et al, 2016;Wang et al, 2014). However, environmental and biological factors can also contribute significantly to the observed variations (Bourgeon et al, 2013;Bustnes et al, 2015;Leat et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Plasma concentrations of organohalogenated contaminants in white-tailed eagle nestlings – The role of age and diet

Løseth

Briels

Eulaers

et al. 2019

Environmental Pollution

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“…Such a decline has been documented on the previous decade as well in other studies on Norwegian birds and their eggs. 32,33 It also follows the continuous decline measured in dead WTE specimens collected in Norway, 35 as well as the decline evidence found in Bald eagles of the US. 70 Nevertheless, in a systematic review, Land et al 69 compared all temporal studies and found no overall trend;…”

Section: Time Trendssupporting

confidence: 67%

Spatiotemporal Analysis of Perfluoroalkyl Substances in White-Tailed Eagle (Haliaeetus albicilla) Nestlings from Northern Norway—A Ten-Year Study

Jouanneau

Bårdsen

Herzke

et al. 2020

Environ. Sci. Technol.

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The white-tailed eagle (Haliaeetus albicilla) in Scandinavia has suffered from impaired reproduction due to high exposure to industrial pollution between the 1960s and 1980s. While population numbers are rising again, new contaminants, such as per-and polyfluoroalkyl substances (PFAS), are increasingly found in high trophic avifauna and are of concern to potentially impact once again population health. In the present study, we examined PFAS levels in plasma of white-tailed eagle nestlings from northern Norway over the last decade (2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017). While PFOA and PFNA exposure did not follow a significant time trend, PFOS and PFHxS concentrations decreased over time, and ≥C11 perfluorinated carboxylic acids only seem to level-off during the last four years. This may in fact be the first evidence for a change in the trend for some of these compounds. Furthermore, since several PFAS are expected to be highly present in aqueous film forming foams used at airports, we also investigate the potential of the two main airports in the region to act as hotspots for PFAS. Our results indeed show decreasing exposure to PFOA with distance to the airports. Altogether, our results seem to show that legislation actions are effective, continued concern for PFAS exposure of high trophic wildlife is still warranted, even in the northern environment.

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“…In this analysis, 234 eggs were selected for contaminants analysis. The number of eggs sampled per year varied between one (1990) and 23 (2004), except for 1988 and 2016, when no eggs were found (for more details of egg collections see Bustnes et al, 2007Bustnes et al, , 2011Bustnes et al, , 2015. In each year, we included only one egg per nest box in the analyses.…”

Section: Sample Collectionmentioning

confidence: 99%

“…Tawny owls are a sentinel for monitoring organic pollutants in terrestrial ecosystems because they are resident top-predators accumulating pollutants locally in their territories (Bustnes et al, 2007). Previous analyses of tawny owls in the region, between 1986 and 2009 (Ahrens et al, 2011;Bustnes et al, 2007Bustnes et al, , 2011Bustnes et al, , 2015, reported that both PCBs and OC pesticides declined strongly, especially in the late 1980s and early 1990s (Bustnes et al, 2007(Bustnes et al, , 2011. For PFAS, the picture was more complex, with a decline for PFOS, but overall increases of PFCAs (Ahrens et al, 2011;Bustnes et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Temporal Trends of Organochlorine and Perfluorinated Contaminants in a Terrestrial Raptor in Northern Europe Over 34 years (1986–2019)

Bustnes

Bårdsen

Herzke

et al. 2022

Enviro Toxic and Chemistry

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Fourteen legacy organochlorine (OC) contaminants and 12 perfluoroalkyl substances (PFASs) were measured in eggs of tawny owls (Strix alueco) in central Norway (1986Norway ( -2019. We expected OCs to have reached stable equilibrium levels due to bans, and that recent phase-out of some PFASs would have slowed the increase of these compounds. ∑OC comprised on average approximately 92% of the measured compounds, whereas ∑PFAS accounted for approximately 8%. However, whereas the ∑OC to ∑PFAS ratio was approximately 60 in the first 5 years of the study, it was only approximately 11 in the last 5 years. Both OC pesticides and polychlorinated biphenyls (PCBs) showed substantial declines over the study period (~85%-98%): hexachlorocyclohexanes and chlordanes seemed to be levelling off, whereas p,p′-dichlorodiphenyldichloroethylene (p,p′-DDE) and hexachlororbenzene (HCB), and most PCB congeners still seemed to decline at a more or less constant rate. While the concentration of perfluorooctane sulfonic acid (PFOS), the dominating PFAS, was reduced by approximately 43%, other perfluorinated sulfonates (PFSAs) showed only minor changes. Moreover, the median concentrations of seven perfluorinated carboxylic acids (PFCAs) increased approximately five-fold over the study period. Perfluorononanoic acid and perfluoroundecanoate acid, however, seemed to be levelling off in recent years. In contrast, perfluorododecanoic acid, perfluorodecanoate acid, perfluorotridecanoic acid, and perfluorotetradecanoic acid seemed to increase more or less linearily. Finally, perfluorooctanoic acid (PFOA) was increasingly likely to be detected over the study period. Hence, most legacy OCs and PFOS have not reached a lower threshold with stable background levels, and voluntary elimination of perfluoroalkyl carboxylates still has not resulted in declining levels in tawny owls in central Norway.

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Perfluoroalkyl substance concentrations in a terrestrial raptor: Relationships to environmental conditions and individual traits

Cited by 23 publications

References 40 publications

Plasma concentrations of organohalogenated contaminants in white-tailed eagle nestlings – The role of age and diet

Plasma concentrations of organohalogenated contaminants in white-tailed eagle nestlings – The role of age and diet

Spatiotemporal Analysis of Perfluoroalkyl Substances in White-Tailed Eagle (Haliaeetus albicilla) Nestlings from Northern Norway—A Ten-Year Study

Temporal Trends of Organochlorine and Perfluorinated Contaminants in a Terrestrial Raptor in Northern Europe Over 34 years (1986–2019)

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