Experimental Study of Environmental Effects: Leaf Traits of Juvenile Fagus sylvatica, Acer pseudoplatanus, and Carpinus betulus Are Comparable to Leaves of Mature Trees in Upper Canopies

Table 2

Climatic conditions represented by temperature and relative air humidity during day (5 am–9 pm; n = 1020) and midday (11 am–2 pm; n = 60) in greenhouses 1 and 2 in June 2014. Values represent the median and interquartile ranges (IQR = first quartile, third quartile). Uppercase letters indicate significant differences of temperature and relative air humidity between the greenhouses using Mann-Whitney U test (p < 0.05).

Climate	Temperature (°C)		Relative air humidity (%)
	Greenhouse 1	Greenhouse 2	Greenhouse 1	Greenhouse 2
Day	21.4 (16.7,27.9)^A	22.7 (17.2,30.0)^B	58 (40,80)^A	55 (37,79)^A
Midday	26.5 (22.3,31.5)^A	29.3 (24.1,35.9)^B	41 (33,52)^A	37 (28,49)^B