NERC Peer Review College 2007-;
Editorships: Sedimentary Geology (Special Issues 2005 and 2007), Estuarine, Coastal & Shelf Science (Special Issue 2007);
Peer review of grant applications: NERC, Science Foundation Ireland, Dutch Technology Foundation STW;
Conference organisation: BSRG 2003, Challenger Society Meeting 2008; Invited presentations: AAPG (2005);
Lorentz Institute Theoretical Physics (2006). Best poster award BSRG (2004). Citations: Baas (2004) was at #7 in the top 25 of most downloaded papers of Sedimentary Geology between April 2004 and March 2005, and at #14 between Oct 2003 and Sept 2004, with more than 500 downloads.