Long-range transport of legacy organic pollutants affects alpine fish eaten by ospreys in western Canada.
Amino acid specific stable isotope analyses
Biomagnification
Osprey
POPs
Western Canada
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
10 Apr 2020
10 Apr 2020
Historique:
received:
20
08
2019
revised:
22
10
2019
accepted:
30
11
2019
entrez:
14
2
2020
pubmed:
14
2
2020
medline:
23
4
2020
Statut:
ppublish
Résumé
Persistent organic pollutants (POPs) contaminate pristine, alpine environments through long-range transport in the atmosphere and glacier trapping. To study variation in POPs levels in western Canada, we measured levels in the prey (fish) of osprey (Pandion haliaetus) during 1999-2004, and compared those to levels in eggs and chicks. Values in fish muscle (representing human consumption) correlated with whole carcasses (wildlife consumption) for all POPs, except toxaphene, allowing us to pool data. Biomagnification factors for osprey eggs were much higher than published values from Oregon, reflecting differences in local diet. We factored baseline-corrected food chain variation by using amino acid-specific analysis of osprey eggs, illustrating how top predators (ospreys) can indicate both ecosystem-wide baselines and contamination. Given that our biomagnification factors were so different from those for the same species from a nearby site, we argue that trophic magnification factors derived from baseline-corrected δ
Identifiants
pubmed: 32050398
pii: S0048-9697(19)35884-X
doi: 10.1016/j.scitotenv.2019.135889
pii:
doi:
Substances chimiques
Environmental Pollutants
0
Water Pollutants, Chemical
0
Polychlorinated Biphenyls
DFC2HB4I0K
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
135889Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.