Growth and C allocation of Populus tremuloides genotypes in response to atmospheric CO2 and soil N availability. New Phytologist. 140:251-260.. 1998.
Variation in sugar maple root respiration with root diameter and soil depth. Tree Physiology. 18:665-670.. 1998.
Effect of measurement CO2 concentration on sugar maple root respiration. Tree Physiology. 17:421-427.. 1997.
Elevated atmospheric carbon dioxide and leaf litter chemistry: influences on microbial respiration and net nitrogen mineralization. Soil Science Society of America Journal. 60(5):1571-1577.. 1996.
Fine root respiration in northern hardwood forests in relation to temperature and nitrogen availability. Tree Physiology. 16:719-725.. 1996.
Latitudinal variation in sugar maple fine root respiration. Canadian Journal of Forest Research. 26(10):1761-1768.. 1996.
Linking above- and belowground responses to rising CO2 in northern deciduous forest species. Carbon Dioxide and Terrestrial Ecosystems. :41-51.. 1996.
Nitrate deposition in northern hardwood forests and the nitrogen metabolism of Acer saccharum Marsh. Oecologia. 108:338-344.. 1996.
Soil microbial communities beneath Populus grandidentata grown under elevated atmospheric CO2. Ecological Applications. 6(1):257-262.. 1996.
Atmospheric CO2, soil nitrogen and turnover of fine roots. New Phytologist. 129:579-585.. 1995.
Interacting effects of soil fertility and atmospheric CO2 on leaf area growth and carbon gain physiology in Populus x euramericana (Dode) Guinier. New Phytologist. 129:253-263.. 1995.
Temperature effects on kinetics of microbial respiration and net nitrogen and sulfur mineralization. Soil Science Society of America Journal. 59:233-240.. 1995.
Above- and belowground response of Populus grandidentata to elevated atmospheric CO2 and soil N availability. Plant and Soil. 165:45-51.. 1994.
Belowground responses to rising atmospheric CO2: implications for plants, soil biota and ecosystem processes. Plant and Soil. 165:1-6.. 1994.
Studying the effects of air pollution on forest along exposure gradients: experiences in the United States and opportunities for cooperation. Climate and Atmospheric Deposition Studies in Forests. :109-115.. 1994.
Elevated atmospheric CO2 and feedback between carbon and nitrogen cycles. Plant and Soil. 151:105-117.. 1993.
Sulfate adsorption and microbial immobilization in northern hardwood forests along an atmospheric deposition gradient. Canadian Journal of Forest Research. 22:1843-1850.. 1992.