Climate and forest management influence nitrogen balance of European beech forests: microbial N transformations and inorganic N net uptake capacity of mycorrhizal roots. - Gessler,A..; Jung,K..; Gasche,R..; Papen,H..; Heidenfelder,A..; Borner,E..; Metzler,B..; Augustin,S..; Hildebrand,E..; Rennenberg,H.. (European Journal of Forest Research, 2005)