00687nas a2200145   4500008004100000245019600041210006900237260003100306300000700337653001400344100001600358700001600374700002100390856013000411       2002                        eng d00aPCBs and organochlorine pesticide residues in eggs of threatened colonial charadriiform species (Aves, Charadriiformes) from wetlands of international importance in the north-eastern Greece. 0 aPCBs and organochlorine pesticide residues in eggs of threatened  aThessalonikic22-25.5.2002  a4610akape aves1 aGoutner, V.1 aAlbanis, T.1 aKonstantinou, I.  uhttps://icgf.myspecies.info/content/pcbs-and-organochlorine-pesticide-residues-eggs-threatened-colonial-charadriiform-species02965nas a2200229   4500008004100000245018900041210006900230260001200299300001200311490000800323520206900331653001902400653002502419653003002444653003002474653002702504653001902531100001602550700001602566700002102582856013202603       2005                        eng d00aPCBs and organochlorine pesticide residues in eggs of threatened colonial charadriiform species (Aves, Charadriiformes) from wetlands of international importance in northeastern Greece0 aPCBs and organochlorine pesticide residues in eggs of threatened  c2005///  a157-1630 v1353 aThe levels of eight PCB congeners (IUPAC 8, 20, 28, 52, 101, 118, 138 and 180) and 13 organochlorine pesticides (á-HCH, â-HCH, Lindane, Heptachlor, Heptachlor epoxide, Aldrin, Dieldrin, Endrin, 2,4?-DDT, 2,4?-DDD, 4,?-DDT 4,4?-DDD and 4,4?-DDE) were measured in eggs of Mediterranean gulls (Larus melanocephalus) (Lm), avocets (Recurvirostra avosetta) (Ra) and common terns (Sterna hirundo) (Sh) collected at the Evros Delta (Lm, Ra), Porto Lagos (Lm) and Axios Delta (Lm, Sh), north-eastern Greece in 1997. All pollutants were detected in all areas and species, with the exception of Dieldrin in the Mediterranean gull. Percent levels of higher chlorinated PCB congeners (IUPAC 118, 138 and 180) were greater than other compounds in all species and areas, probably due to their bioaccumulative properties. Only the median concentrations of PCB 28 differed significantly among areas in Mediterranean gull eggs. Significant differences between Mediterranean gulls and avocets (Evros) were found with regard to PCB 138 and PCB 180, whereas differences between Mediterranean gulls and common terns (Axios) were found in all PCBs except PCB 8 and PCB 20. These differences were due to the different diets of the species studied. Maximum pesticide concentrations in all samples were below 50 ppb, except for ?-HCH and 2,4?-DDD, both of which predominated among all compounds in all areas and species. The same trend has been found in other waterbird species in Greece, suggesting a particular pollution pattern in the region. Significant differences in the median concentrations of most pesticides were found among areas in the Mediterranean gull. Such differences were also found between Mediterranean gulls and avocets and between Mediterranean gulls and common terns, again due to different feeding habits. Our results suggest that, in the wetlands of northeastern Greece, agrochemical sources dominate over industrial pollution. Pollutants still persist in Greek wetlands, but their levels are too low to have any adverse biological effect on the species studied.10aGreek wetlands10aLarus melanocephalus10aOrganochlorine pesticides10apolychlorinated biphenyls10aRecurvirostra avosetta10aSterna hirundo1 aGoutner, V.1 aAlbanis, T.1 aKonstantinou, I.  uhttps://icgf.myspecies.info/content/pcbs-and-organochlorine-pesticide-residues-eggs-threatened-colonial-charadriiform-species-000638nas a2200157   4500008004100000245013300041210006900174300001100243490000700254653000900261100001600270700001600286700002100302700002500323856013200348       2001                        eng d00aPCBs and organochlorine pesticide residues in eggs of Audouin's gull (<i>Larus audouinii</i>) in the north-eastern Mediterranean0 aPCBs and organochlorine pesticide residues in eggs of Audouins g  a377-880 v4210aAves1 aGoutner, V.1 aAlbanis, T.1 aKonstantinou, I.1 aPapakonstantinou, K.  uhttps://icgf.myspecies.info/content/pcbs-and-organochlorine-pesticide-residues-eggs-audouins-gull-larus-audouinii-north-eastern