1 23 Annals of Forest Science Official journal of the Institut National de la Recherche Agronomique (INRA) ISSN 1286-4560 Volume 70 Number 1 Annals of Forest Science (2013) 70:101-111 DOI 10.1007/s13595-012-0230-3 Investigating biochemical processes to assess deadwood decay of beech and silver fir in Mediterranean mountain forests F. Lombardi, P. Cherubini, R. Tognetti, C. Cocozza, B. Lasserre & M. Marchetti