{"id":118963,"date":"2026-09-11T21:49:38","date_gmt":"2026-09-11T19:49:38","guid":{"rendered":"https:\/\/nilu.gnist.dev\/publikasjoner\/temporal-variation-in-circulating-concentrations-of-organochlorine-pollutants-in-a-pelagic-seabird-breeding-in-the-high-arctic\/"},"modified":"2026-09-11T21:49:38","modified_gmt":"2026-09-11T19:49:38","slug":"temporal-variation-in-circulating-concentrations-of-organochlorine-pollutants-in-a-pelagic-seabird-breeding-in-the-high-arctic","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/temporal-variation-in-circulating-concentrations-of-organochlorine-pollutants-in-a-pelagic-seabird-breeding-in-the-high-arctic\/","title":{"rendered":"Temporal variation in circulating concentrations of organochlorine pollutants in a pelagic seabird breeding in the high arctic"},"content":{"rendered":"<p class=\"wp-block-paragraph\">The present study explored short-term temporal variations in circulating concentrations of 3 legacy organochlorines with<br \/>\ndifferent physicochemical properties (polychlorinated biphenyl 153 [PCB-153], p,p0-dichlorodiphenyldichloroethylene [DDE], and<br \/>\nhexachlorobenzene [HCB]) in breeding kittiwakes (Rissa tridactyla) in a colony in Svalbard (788N), Norwegian Arctic. Concentrations<br \/>\nwere measured in blood of a large number (n\u00bc412\u2013521 blood samples, depending on the data analyses) of prebreeding, incubating, and<br \/>\nchick-rearing birds over a period of 5 yr (2007\u20132011). The PCB-153 concentrations were equal in male and female blood in the<br \/>\nprebreeding period, whereas females had significantly lower concentrations during incubation and chick rearing, probably because of<br \/>\ntheir ability to eliminate organochlorines through egg laying. A similar temporal pattern was observed with DDE, although the lower<br \/>\nconcentrations in incubating females were not significant. Males and females had similar concentrations of HCB over all reproductive<br \/>\nstages. The concentrations of all 3 compounds varied greatly between years. The concentrations of PCB-153 tended to decline over the<br \/>\nstudy period, whereas concentrations of HCB showed an increasing trend, especially among chick-rearing males late in the season.<br \/>\nConcentrations of PCB-153 increased approximately 2.5 times from the prebreeding to the chick-rearing period, concurrent with<br \/>\nmobilization of body lipids (reduced body mass).Asimilar, but less pronounced trend was found for HCB. For DDE, however, kittiwakes<br \/>\nhad the highest concentrations in the prebreeding period, suggesting relatively high exposure in their winter areas. The present study<br \/>\ndocumented large variations in circulating concentrations of legacy organochlorines among and within breeding seasons in kittiwakes,<br \/>\nbut the alterations within seasons were relatively consistent from year to year. Environ Toxicol Chem 2016;9999:1\u20137.#2016 SETAC<br \/>\nKittiwake Organochlorines Marine pollution Seasonal variation<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-09-11 14:48:44","footnotes":""},"nva_tax_category":[1099],"class_list":["post-118963","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-scientific-journal-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/118963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":0,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/118963\/revisions"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=118963"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=118963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}