TY - JOUR A1 - Op de Beeck, M. A1 - Gielen, B. A1 - Jonckheere, I. A1 - Samson, R. A1 - Janssens, I. A. A1 - Ceulemans, R. T1 - Needle age-related and seasonal photosynthetic capacity variation is negligible for modelling yearly gas exchange of a sparse temperate Scots pine forest JO - Biogeosciences J1 - BG VL - 7 IS - 1 SP - 199 EP - 215 Y1 - 2010/01/14 PB - Copernicus Publications SN - 1726-4189 UR - http://www.biogeosciences.net/7/199/2010/ L1 - http://www.biogeosciences.net/7/199/2010/bg-7-199-2010.pdf DO - 10.5194/bg-7-199-2010 ER -