Table 1.

Sample design (provenances: GER = German, ESP = Spanish, ITA = Italian).

Sample periods in 2013	Treatment per day	Provenance on day of the sample period
		1	2	3	4	5	6	7	8	9	10
Drought (13– 22 August)	Two drought-stressed + two well-watered individuals	GER	ESP	–	ITA	GER	ESP	ITA	GER	ESP	ITA
Rewetting (8–16 October)	Identical individuals used as for drought, however, drought stressed ones re-watered	GER	ESP	ITA	GER	ESP	ITA	GER	ESP	ITA	–