Appendix I. A figure showing the cumulative curves of fine-root demography (total root proliferation and death), soil water potential (ψs), and temperature (Ts) in each species-specific root chamber.
FIG. I1. Time course of fine-root demography (total root proliferation and death) and soil water potential (ψs) and temperature (Ts) during the study (from February 1999 until September 2001; GS = growing season, DS = dormant season). Root demography data represent the mean of six rhizotrons of Quercus laevis, Q. incana, and Q. margaretta and five of Pinus palustris taken at 13 different mapping dates. Soil water potential and soil temperature were recorded every hour with one thermocouple psychrometer placed inside each replicate rhizotron (details are shown in Espeleta et al. 2004). Separate curves for each psychrometer are presented. |
LITERATURE CITED
Espeleta, J. F., J. B. West, and L. A. Donovan. 2004. Species-specific patterns of hydraulic lift in co-occurring adult trees and grasses in a sandhill community. Oecologia 138:341–349.