Effects of Soil Temperature during Fire on Seed Survival in Florida Sand Pine Scrub

Table 4

Temperature durations of copper-constantan thermocouples placed at the soil surface and at 2 cm depth in the soil. Temperatures were quantified during prescribed fires conducted during May 1993 at Ocala National Forest and Archbold Biological Station, Florida. Temperature duration was defined as length of time that (0.75 × maximum thermocouple temperature) was maintained or exceeded.

Site	Depth in soil (cm) (𝑛=4)	Temperature duration (s) (median (range))
Archbold	0	105 (20–>3260)
	2	2020 (160–>3250)^(a)
Ocala	0	80 (65–1555)
	2	2918 (675–>4625)^(a)

(a)Separate Kolmogorov-Smirnov tests were conducted for Archbold (𝑃=.05) and Ocala (𝑃<.01) sites to test for difference in temperature durations with depth in soil.