Figure 4. 14C signatures in 1999 tree ring cellulose
across the Oak Ridge Reservation (J. Gaudinski and S. Trumbore, UC-Irvine).
Figure 5. 14C signatures in year 2000 foliage from
red maple and white oak trees across the Oak Ridge Reservation. (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.
