Number 5, March

Tree Physiology 21:273–274 [ Summary ] [ Full Text ]
The ponderosa pine ecosystem and environmental stress: past, present and future
R. H. Waring and B. E. Law

Tree Physiology 21:275–286 [ Summary ] [ Full Text ]
Changes in physiological attributes of ponderosa pine from seedling to mature tree
Nancy E. Grulke and William A. Retzlaff

Tree Physiology 21:287–298 [ Summary ] [ Full Text ]
Use of a simulation model and ecosystem flux data to examine carbon–water interactions in ponderosa pine
Mathew Williams, Beverly E. Law, Peter M. Anthoni and Michael H. Unsworth

Tree Physiology 21:299–308 [ Summary ] [ Full Text ]
Carbon dioxide and water vapor exchange by young and old ponderosa pine ecosystems during a dry summer
B. E. Law, A. H. Goldstein, P. M. Anthoni, M. H. Unsworth, J. A. Panek, M. R. Bauer, J. M. Fracheboud and N. Hultman

Tree Physiology 21:309–318 [ Summary ] [ Full Text ]
Ecosystem respiration in a young ponderosa pine plantation in the Sierra Nevada Mountains, California
Ming Xu, Terry A. DeBiase, Ye Qi, Allen Goldstein and Zhigang Liu

Tree Physiology 21:319–327 [ Summary ] [ Full Text ]
Blue wild-rye grass competition increases the effect of ozone on ponderosa pine seedlings
Christian P. Anderson, William E. Hogsett, Milton Plocher, Kent Rodecap and E. Henry Lee

Tree Physiology 21:329–336 [ Summary ] [ Full Text ]
Multivariate patterns of biochemical responses of Pinus ponderosa trees at field plots in the San Bernardino Mountains, southern California
Michael Tausz, Andrzej Bytnerowicz, Michael J. Arbaugh, Astrid Wonisch and Dieter Grill

Tree Physiology 21:337–344 [ Summary ] [ Full Text ]
Response of stomatal conductance to drought in ponderosa pine: implications for carbon and ozone uptake
Jeanne A. Panek and Allen H. Goldstein