Variation in Nectar Volume and Sugar Concentration of Allium ursinum L. ssp. ucrainicum in Three Habitats

Table 3

The effect of flower isolation on nectar volume at site 3.

	April 27, 2008			May 4, 2010
	𝑛	mean (μL)	std	𝑛	mean (μL)	std
Covered	50	1.656^∗	0.930	32	0.637^∗	0.525
Uncovered	50	1.318^∗	0.677	32	0.172^∗	0.117
Method	Welch-test,𝑃=0.0415			Mann-Whitney test, 𝑃<0.0001

Abbreviations: 𝑛: sample size; std: standard deviation;^∗indicates significant difference between covered and uncovered samples.