... 2001), which depend on latitude and altitude. us SWD markedly decrease with latitude and altitude as well (S et al. 2005). In response to nitrogen fertilization, SWD either de- clines ... to elevated CO2 and increased N deposition in Picea abies. Plant, Cell and Environment, 19: 1369–1378.KILPELAINEN A., PELTOLA H., RYYPPO A., SAUVALA K., LAITINEN K., KELLOMAKI S., 2003. Wood ... discs volume was measured as a volume of cylinder. Afterwards, stem discs were dried for 48 hours in 105°C. After drying, dry weight was precisely estimated (balance model 1405 B MP8-1, Sartorius,...