since 1998: Scientific Officer at the Institute of Sea Fisheries, Hamburg
1992 – 1998: Chairman of ICES Working Group on Crangon Fisheries and Life Cycle (WGCRAN)
since 1992: Coordinating Young Fish and Brown Shrimp Surveys of the Institute of Sea Fisheries, Working Group on Coastal Fisheries (ISH-BFAFi), Hamburg
1987 – 1991: Active in Baltic Sea and coastal North Sea fishery research at Institute for Coastal- and Inland Fisheries (IKB-BFAFi), Hamburg
1986: Establishing and Head of „Dittmeyer’s Oyster Company“ Island of Sylt and Hamburg
1984: Doctors degree (Dr.rer.nat.) at University of Hamburg in Fisheries Sciences
1979 – 1985: Head of Aquaculture station Langballigau (branch of IKB-BFAFi at Flensburg Fjord)
1976 – 1979: Oyster research at Institute for Coastal- and Inland Fisheries (IKB-BFAFi), Hamburg
1975 - 1976: Studies of Fishery Sciences and Hydrobiology at University of Hamburg
1975 Diploma in Biology, University of Göttingen
since 1974: Employed at the Institute for Coastal- and Inland Fisheries (IKB-BFAFi), Ahrensburg
1973: Two months student assistant at “Institute for Water Research” in Pretoria (republic of South Africa)
1970 – 1974: Studies of biology at Georg-August-University Göttingen, Germany.

Publications

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