Working with Peter Draaisma, then Director for Fisheries at the Ministry for Agriculture and Fisheries, he devised the co-management system that has been used for Dutch fisheries since 1993.
agus an Iascaigh, d’oibrigh sé amach córas comhbhainistithe, córas a chuirtear i bhfeidhm i réimse na niascach san Ísiltír ó bhí 1993 ann.