Publications

Differences in Trophic Level, Contaminant Load, and DNA Damage in an Urban and a Remote Herring Gull (Larus argentatus) Breeding Colony in Coastal Norway

Keilen, Ellen Kristine; Borgå, Katrine; Thorstensen, Helene Skjeie; Hylland, Ketil; Helberg, Morten; Warner, Nicholas Alexander; Bæk, Kine; Reiertsen, Tone Kristin; Ruus, Anders

Herring gulls (Larus argentatus) are opportunistic feeders, resulting in contaminant exposure depending on area and habitat. We compared contaminant concentrations and dietary markers between two herring gull breeding colonies with different distances to extensive human activity and presumed contaminant exposure from the local marine diet. Furthermore, we investigated the integrity of DNA in white blood cells and sensitivity to oxidative stress. We analyzed blood from 15 herring gulls from each colony—the urban Oslofjord near the Norwegian capital Oslo in the temperate region and the remote Hornøya island in northern Norway, on the Barents Sea coast. Based on d13C and d34S, the dietary sources of urban gulls differed, with some individuals having a marine and others a more terrestrial dietary signal. All remote gulls had a marine dietary signal and higher relative trophic level than the urban marine feeding gulls. Concentrations (mean ± standard deviation [SD]) of most persistent organic pollutants, such as polychlorinated biphenyl ethers (PCBs) and perfluorooctane sulfonic acid (PFOS), were higher in urban marine (PCB153 17 ± 17 ng/g wet weight, PFOS 25 ± 21 ng/g wet wt) than urban terrestrial feeders (PCB153 3.7 ± 2.4 ng/g wet wt, PFOS 6.7 ± 10 ng/g wet wt). Despite feeding at a higher trophic level (d15N), the remote gulls (PCB153 17 ± 1221 ng/g wet wt, PFOS 19 ± 1421 ng/g wet wt) were similar to the urban marine feeders. Cyclic volatile methyl siloxanes were detected in only a few gulls, except for decamethylcyclopentasiloxane in the urban colony, which was found in 12 of 13 gulls. Only hexachlorobenzene was present in higher concentrations in the remote (2.6 ± 0.42 ng/g wet wt) compared with the urban colony (0.34 ± 0.33 ng/g wet wt). Baseline and induced DNA damage (doublestreak breaks) was higher in urban than in remote gulls for both terrestrial and marine feeders.

Pergamon Press

Differences in prenatal exposure to mercury in South African communities residing along the Indian Ocean.

Channa, K.; Odland, J.Ø.; Kootbodien, T.; Theodorou, P.; Naik, I.; Sandanger, T.M.; Röllin, H.B.

Differences between European monitoring networks on atmospheric composition. NILU F

Aas, W.; Tørseth, K.; Myhre, C.L.

Dietary predictors and plasma concentrations of perfluorinated compounds in a coastal population from northern Norway.

Rylander, C.; Brustad, M.; Falk, H.; Sandanger, T.M.

Dietary exposure to selected perfluoroalkyl acids (PFAAs) in four European regions.

Klenow, S.; Heinemeyer, G.; Brambilla, G.; Dellatte, E.; Herzke, D.; de Voogt, P.

Dietary exposure to legacy and replacement PFASs in the Hubei and Zhejiang province, China.

Zhang, H.; Vestergren, R.; Herzke, D.; Jiang, G.

Dicyclohexylamine: discovery of an environmental contaminant using in-silico screening tools.

Malmvärn, A.; Kierkegaard, A.; Radke, M.; Alsberg, T.; McLachlan MS, Arnot, J.; Breivik, K.; Brown, T.; Wania F.

Diagnosing the transition layer at extratropical latitudes using MLS O3 and MOPITT CO analyses.

Barré, J.; El Amraoui, L.; Ricaud, P.; Lahoz, W. A.; Attié, J.-L.; Peuch, V.-H.; Josse, B.; Marécal, V.

Developments in health risk assessment due to PM2.5 exposure by the European Environment Agency

Soares, Joana; Gsella, Artur; Horálek, Jan; Guerreiro, Cristina; Ortiz, Alberto González

Developmental toxicity of perfluorooctanesulfonate (PFOS) and its chlorinated polyfluoroalkyl ether sulfonate alternative F-53B in the domestic chicken

Briels, Nathalie; Ciesielski, Tomasz Maciej; Herzke, Dorte; Jaspers, Veerle

Development, news & issues of ACTRIS data centre for WP3. NILU F

Fiebig, M.; Myhre, C.L.; Fjæraa, A.M.; Hamburger, T.

Development, evaluation and application of a nested exposure model for organic contaminants in the Nordic and Arctic region (NEM).

Breivik, K.