Björn Helander,^* Anders Bignert,^** Lillemor Asplund<sup>***


*</sup>Björn Helander is senior scientist at the Swedish Museum of Natural History, Department of Contaminant Research. He has a PhD in zooecology from Stockholm University. He is responsible for the monitoring of white-tailed sea eagle reproduction and population trends within the National Environmental Monitoring Programme under the National Environment Protection Agency, and is leader of “Project Sea Eagle” run by the Swedish Society for Nature Conservation (SNF). His address: Swedish Museum of Natural History, Department of Contaminant Research, Box 50007, SE-104 05 Stockholm, Sweden. bjorn.helander@nrm.se
^**Anders Bignert is professor at the Swedish Museum of Natural History, Department of Contaminant Research. He has a PhD in zooecology from Stockholm University. He has extensive experience in the monitoring of environmental pollutants in Swedish biota and is responsible for the statistical treatment of data series on pollutants from aquatic and terrestrial environments, within the National Monitoring Programme under the National Environment Protection Agency. His address: Swedish Museum of Natural History, Department of Contaminant Research, Box 50007, SE-104 05 Stockholm, Sweden. anders.bignert@nrm.se
^***Lillemor Asplund is senior scientist at the Department of Applied Environmental Science (ITM), Laboratory of Analytical Environmental Chemistry, Stockholm University. She has a PhD in environmental chemistry from Stockholm University. She has extensive experience in analyses of biological environmental samples. She is engaged in methodological development, identification, and quantification of organohalogen substances as well as quality assurance of chemical analyses. Her address: Department of Applied Environmental Science (ITM), Laboratory of Analytical Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden. lillemor.asplund@itm.su.se