Fig. 2. Simultaneous datalogger readouts of Dichanthelium lanuginosum rhizosphere temperatures on three types of geothermally heated soils in the Rabbit Creek thermal area (Fig. 1, site 5) of YNP. A, Near (5–10 cm) the edge of a hot springs (85 to 90 °C). B, On relatively dry, steaming soil (approx. 20 m from hot springs) (upper tracing) and on geothermally inactive, exposed ground approx. 50 m from the active geothermal sites above (lower tracing).