1. J.E. Cairnes School of Business and Economics, National University of Ireland, Galway, Ireland;
2. Socio-Economic Marine Research Unit, Whitaker Institute National University of Ireland, Galway, Ireland;
3. College of Engineering and Informatics, The Ryan Institute National University of Ireland Galway, Galway, Ireland;
4. Agricultural Economics and Farm Surveys Department, Rural Economy and Development Programme, Teagasc, Ashtown, Dublin, Ireland