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By: Conze, Klaus-Jürgen - Grönhagen, Nina - Lohr, Mathias - Menke, NorbertType: ArticleIn: BioRisk : biodiversity & ecosystem risk assessmentVolume: 5Series:Issue:Date: 2010Page Range: 31-45Publication Info: Sofia, Bulgaria PensoftSubjects: dragonflies, climatic changes, North Rhine-Westfal