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Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds

Jan Baert (UGent) , Colin Janssen (UGent) , Katrine Borgå and Frederik De Laender (UGent)
(2013) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 47(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 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 analyse two independent datasets (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.
Keywords
PERSISTENT ORGANIC POLLUTANTS, GULLS LARUS-HYPERBOREUS, STABLE-ISOTOPE ANALYSES, BARENTS-SEA, FOOD-WEB, ORGANOCHLORINE CONTAMINANTS, TROPHIC RELATIONSHIPS, NORTHWATER POLYNYA, TOP PREDATOR, SUMMER DIET

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Citation

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MLA
Baert, Jan, et al. “Migration and Opportunistic Feeding Increase PCB Accumulation in Arctic Seabirds.” ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 47, no. 20, 2013, pp. 11793–801, doi:10.1021/es402898t.
APA
Baert, J., Janssen, C., Borgå, K., & De Laender, F. (2013). Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 47(20), 11793–11801. https://doi.org/10.1021/es402898t
Chicago author-date
Baert, Jan, Colin Janssen, Katrine Borgå, and Frederik De Laender. 2013. “Migration and Opportunistic Feeding Increase PCB Accumulation in Arctic Seabirds.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 47 (20): 11793–801. https://doi.org/10.1021/es402898t.
Chicago author-date (all authors)
Baert, Jan, Colin Janssen, Katrine Borgå, and Frederik De Laender. 2013. “Migration and Opportunistic Feeding Increase PCB Accumulation in Arctic Seabirds.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 47 (20): 11793–11801. doi:10.1021/es402898t.
Vancouver
1.
Baert J, Janssen C, Borgå K, De Laender F. Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2013;47(20):11793–801.
IEEE
[1]
J. Baert, C. Janssen, K. Borgå, and F. De Laender, “Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds,” ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 47, no. 20, pp. 11793–11801, 2013.
@article{4166838,
  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 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 analyse two independent datasets (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.}},
  author       = {{Baert, Jan and Janssen, Colin and Borgå, Katrine and De Laender, Frederik}},
  issn         = {{0013-936X}},
  journal      = {{ENVIRONMENTAL SCIENCE & TECHNOLOGY}},
  keywords     = {{PERSISTENT ORGANIC POLLUTANTS,GULLS LARUS-HYPERBOREUS,STABLE-ISOTOPE ANALYSES,BARENTS-SEA,FOOD-WEB,ORGANOCHLORINE CONTAMINANTS,TROPHIC RELATIONSHIPS,NORTHWATER POLYNYA,TOP PREDATOR,SUMMER DIET}},
  language     = {{eng}},
  number       = {{20}},
  pages        = {{11793--11801}},
  title        = {{Migration and opportunistic feeding increase PCB accumulation in Arctic seabirds}},
  url          = {{http://doi.org/10.1021/es402898t}},
  volume       = {{47}},
  year         = {{2013}},
}
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