Not to be cited without prior reference to and permission from the author. Relationships between TACs, Fish Landings, and Fishing Effort in the North Sea Simon Greenstreet 1 , Leonie Robinson 1 , Ruth Callaway 2 , Henning Reiss 3 , Siegfried Ehrich 7 , Gerjan Piet 4 , Johan Craeymeersch 4 , Ingrid Kröncke 3 , Helen Fraser 1 , John Lancaster 2 , Liz Jorgensen 6 and Annelies Goffin 5 1: Fisheries Research Services, Marine Laboratory, Aberdeen, Scotland. 2: University, of Wales Swansea, Swansea, Wales. 3: Forschunginstitut Senckenberg, Wilhelmshaven, Germany. 4: The Netherlands Institute for Fisheries Research, Ijmuiden, Netherlands. 5: University of Ghent, Ghent, Belgium. 6: Institute of Marine Research, Tromso, Norway. 7: Institute for Sea Fisheries, Hamburg, Germany Greenstreet@marlab.ac.uk Dr S.P.R. Greenstreet, Fisheries Research Services, Marine Laboratory, PO Box 101, Victoria Road, Aberdeen, AB11 9DB, Scotland MAFCONS