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. 2016 Nov 28;36(11):1382–1399. doi: 10.1093/treephys/tpw066

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© The Author 2016. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Overview of mean environmental, ecophysiological and BVOC parameters for the three provenances separated by treatment and experiment (Str = stressed, Ctr = control, Dr = drought, Rw = rewetting), and respective time (light = day, grey = night) in conjunction with selected group statistics. Bars represent the mean daytime or night-time values and error bars the standard error of each treatment group and experiment. Asterisks over bars and brackets represent significant results (***P < 0.01, **P < 0.05, •P < 0.1) of the group comparisons in three levels, the lower level is showing differences between day and night (Mann–Whitney, paired), mid-level differences between sample periods for control and stressed groups (Mann–Whitney, paired) and top-level differences between stressed and control group during the drought (Mann–Whitney, non-paired). N = 6 for each group, experiment and time. Further group statistics can be found in Supplementary Tables S1 and S2 available at Tree Physiology Online. Volumetric soil water content (SWC), transpiration rate (T_R), net photosynthesis rate (P_N) and total emission rate (E_S) are normalised to 25 °C by the Guenther 93 algorithm.