ELSEVIER Guest Editors: Isabel ll Govern de les Illes Balears Conselleria d'Agricultura, Medi Ambient i Territori Direcci6 General de Medi Rural i Mari March 2012 Vo l ume 95 Supplemen t ISSN 0301 - 4797 Journal of E n v i r o n m e n t a l M a n a g e m e n t Editor-in-Chief A. GILL 1620 Acton Street, Berkeley, CA 94702, USA. Associate Editors JOHN L. INNES Department of Forest Resources Management Faculty of Forestry The University of British Columbia, British Columbia, Canada email: