Figure 1a. Aerial photograph of the Walker Branch study area (dolomite formation) and the access route.Figure 2. Schematic of the experimental plots layouts at each research site.
Figure 1b. Aerial photograph of the TVA Chestnut Ridge study area (dolomite formation) and the access route.
Figure 1c. Aerial photograph of the Pine Ridge study area (shale formation) and the access route.
Figure 1d. Aerial photograph of the Haw Ridge study area (shale formation) and the access route.
Figure 3. Diagram of instrumentation and plots to be located at each research site.
Pretreatment 14C data for the Oak Ridge Reservation
Figure 4. Map of the 14C signatures in 1999 tree ring cellulose across the Oak Ridge Reservation (J. Gaudinski and S. Trumbore, UC-Irvine).Oak Ridge Reservation Base Map showing the four EBIS sites
Figure 5. Map of the 14C signatures in year 2000 foliage from red maple and white oak
(Samples collected by P. Hanson and J. Amthor analysis conducted by John Southon, LLNL).
Figure 6. Graph of the annual pattern of northern hemisphere and tree ring 14C signatures from 1900 through 2000 for various location on the Oak Ridge Reservation. (Samples collected by J. Gaudinski, D. Todd, P. Hanson and J. Amthor analysis conducted by Julia Gaudinski and/or John Southon)
Figure 7. Seasonal pattern of tissue 14C signatures within two herbaceous plants grown in 2000. The x-axis is arbitrary and the temporal arrangement of high signatures may nor may not actually agree between plants. Microstegium is a C4 plant and Solidago a C3.