Table 3.

Results of t-test on Fv/Fm before and after short-term ex situ temperature treatment (day/night temperature: (1) 10/5 °C; (2) 20/10 °C; (3) 25/15 °C; (4) 30/20 °C.) in P. schreberi and R. lanuginosum. n.s. = no significant difference.

Variable	Pleurozium schreberi			Racomitrium lanuginosum
	df	t	p	df	t	p
Fv/Fm	47	0.74	n.s.	43	−1.6	n.s.