Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds

J. M. Baert, C. R. Janssen, K. Borgaìš, F. De Laender

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

It is widely accepted that body concentrations of persistent organic pollutants (POPs) tend to increase with trophic level (TL). Yet, little attention has been paid to the causes in the underlying differences in POP body concentrations between species occupying similar TLs. In this paper we use two modeling approaches to quantify the importance of migration and opportunistic feeding, relative to that of trophic level, in explaining interspecific differences in polychlorinated biphenyl (PCB) body concentrations between 6 Arctic seabird species breeding in the Barents Sea: Little Auk (Alle alle), Black Guillemot (Cepphus grylle), Brünnich's Guillemot (Uria lomvia), Common Eider (Somateria mollissima), Black-legged Kittiwake (Rissa tridactyla), and Glaucous Gull (Larus hyperboreus). As a first approach, we use additive models to analyze two independent data sets (n = 470 and n = 726). We demonstrate that migration, opportunistic feeding, and TL significantly (p < 0.001) increase PCB body concentrations by a factor 3.61-4.10, 2.66-20.95, and 2.38-2.41, respectively. Our second approach, using a mechanistic bioaccumulation model, confirmed these positive effects on the body burdens but suggested lower effects of migration, opportunistic feeding, and TL (1.55, 2.39, and 2.38) than did our statistical analysis. These two independent approaches demonstrate that the effects of migration and opportunistic feeding on seabird body burdens can be similar to that of an increase of one TL and should therefore be accounted for in future analyses.

langue originaleAnglais
Pages (de - à)11793-11801
Nombre de pages9
journalEnvironmental Science and Technology
Volume47
Numéro de publication20
Les DOIs
étatPublié - 15 oct. 2013

Empreinte digitale

Polychlorinated Biphenyls
seabird
Polychlorinated biphenyls
trophic level
Migration
PCB
Organic pollutants
Pollutants
Bioaccumulation
Additive Models
Demonstrate
Statistical Analysis
Statistical methods
Quantify
bioaccumulation
Tend
statistical analysis
breeding
Modeling
modeling

Citer ceci

Baert, J. M. ; Janssen, C. R. ; Borgaìš, K. ; De Laender, F. / Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds. Dans: Environmental Science and Technology. 2013 ; Vol 47, Numéro 20. p. 11793-11801.
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abstract = "It is widely accepted that body concentrations of persistent organic pollutants (POPs) tend to increase with trophic level (TL). Yet, little attention has been paid to the causes in the underlying differences in POP body concentrations between species occupying similar TLs. In this paper we use two modeling approaches to quantify the importance of migration and opportunistic feeding, relative to that of trophic level, in explaining interspecific differences in polychlorinated biphenyl (PCB) body concentrations between 6 Arctic seabird species breeding in the Barents Sea: Little Auk (Alle alle), Black Guillemot (Cepphus grylle), Br{\"u}nnich's Guillemot (Uria lomvia), Common Eider (Somateria mollissima), Black-legged Kittiwake (Rissa tridactyla), and Glaucous Gull (Larus hyperboreus). As a first approach, we use additive models to analyze two independent data sets (n = 470 and n = 726). We demonstrate that migration, opportunistic feeding, and TL significantly (p < 0.001) increase PCB body concentrations by a factor 3.61-4.10, 2.66-20.95, and 2.38-2.41, respectively. Our second approach, using a mechanistic bioaccumulation model, confirmed these positive effects on the body burdens but suggested lower effects of migration, opportunistic feeding, and TL (1.55, 2.39, and 2.38) than did our statistical analysis. These two independent approaches demonstrate that the effects of migration and opportunistic feeding on seabird body burdens can be similar to that of an increase of one TL and should therefore be accounted for in future analyses.",
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Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds. / Baert, J. M.; Janssen, C. R.; Borgaìš, K.; De Laender, F.

Dans: Environmental Science and Technology, Vol 47, Numéro 20, 15.10.2013, p. 11793-11801.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds

AU - Baert, J. M.

AU - Janssen, C. R.

AU - Borgaìš, K.

AU - De Laender, F.

PY - 2013/10/15

Y1 - 2013/10/15

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