Intracanopy variation in nitrogen cycling through leaves is influenced by irradiance and proximity to developing fruit in mature walnut trees Steven A. WeinbaumTom T. MuraokaRichard E. Plant Original Articles Pages: 6 - 11
Nitrate reductase and glutamine synthetase activities in relation to growth and nitrogen assimilation in red oak and red ash seedlings: effects of N-forms, N concentration and light intensity Benoit TruaxFrance LambertNormand Chevrier Original Articles Pages: 12 - 18
Nitrogen metabolism of Douglas fir and Scots pine as affected by optimal nutrition and water supply under conditions of relatively high atmospheric nitrogen deposition Marta Pérez-SobaPieter H. B. de Visser Original Articles Pages: 19 - 25
The establishment of stem nutrient distribution zones of European larch and tamarack using principal component analysis Robert MyreClaude Camiré Original Articles Pages: 26 - 34
Formation and vertical distribution of sapwood and heartwood in Cryptomeria japonica D. Don K. C. YangY. S. ChenG. Hazenberg Original Articles Pages: 35 - 40
Phenological and growth patterns of the Mediterranean oak Quercus suber L. Graça OliveiraOtília CorreiaFernando M. Catarino Original Articles Pages: 41 - 46
Shedding of older needle age classes does not necessarily reduce photosynthetic primary production of Norway spruce Wolfram BeyschlagRonald J. RyelChristian Dietsch Original Articles Pages: 51 - 59