The Department of Environmental Assessment is a centre for freshwater and forest soil research with a special focus on environmental monitoring and assessment. The department also performs teaching and gives expert support to the Swedish Environmental Protection Agency, SEPA. At present the department consists of some 65 employees; ca 25 of which are senior and post-doc scientists and some 10 PhD students. The department is divided into four research sections: geochemistry, biodiversity, organic environmental pollutants and modelling, and covers program areas such as (i) environmental monitoring and assessment, (ii) environmental pollutants, and (iii) integrated catchment monitoring. We now would like to enlarge our research group by announcing a Ph D Student position in aquatic ecology.