Session 4 |
| | Carbon dioxide exchange 2 |
| | Organizers: Ray Leuning, CSIRO, Canberra, ACT Australia; John H. Prueger, USDA/ARS, Ames, IA
|
| 2:30 PM | 4.1 | Diurnal CO2 profiles from a Zea mays L. canopy  
Steven E. Hollinger, ISWS, Champaign, IL; and C. Bernacchi and T. P. Meyers |
| 2:45 PM | 4.2 | Carbon dioxide exchange in maize and soybeans
Andrew E. Suyker, Univ. of Nebraska, Lincoln, NE; and S. B. Verma |
| 3:00 PM | | Coffee Break
|
| 3:30 PM | 4.3 | A test of strategies to improve NEE in corn-soybean ecosystems
John M. Baker, USDA, St. Paul, MN; and T. J. Griffis |
| 3:45 PM | 4.4 | Seasonal variation in the isotope ratio of ecosystem respiration and canopy-scale discrimination of a corn-soybean ecosystem
Timothy J. Griffis, University of Minnesota, St. Paul, MN; and J. M. Baker and J. Zhang |
| 4:00 PM | 4.5 | Carbon budget of grassland under two management regimes
Christof Ammann, Swiss Federal Research Station for Agroecology and Agriculture, Zurich, Switzerland; and A. Neftel, C. Flechard, J. Leifeld, and J. Fuhrer |
| 4:15 PM | 4.6 | Savanna fires and their impact on net ecosystem productivity
Jason Beringer, Monash University, Melbourne, Vic., Australia; and L. B. Hutley and N. J. Tapper |
| 4:30 PM | 4.7 | Evaluating autotrophic and heterotrophic respiration in an oak grass savanna using flux-gradient measurements of soil respiration with new infra-red CO2 sensors
Dennis D. Baldocchi, University of California, Berkeley, CA; and J. Tang and L. Xu |
| 4:45 PM | 4.8 | New type of CO2 sensor for ecological measurements
Christer P. Helenelund, Vaisala Oyj, Helsinki, Finland |
| 5:00 PM | 4.9 | Soil respiration source density profiles using steady-state inverse methods
Michael D. Novak, University of British Columbia, Vancouver, BC, Canada; and R. Jassal and A. Black |