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. 2016 Jan 13;3(1):150429. doi: 10.1098/rsos.150429

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© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Response of two populations of Fucus distichus to short-term thermal stress. The response was measured at three temperatures by maximum quantum yield (F_m/F_v) (a,b) and the performance index (PI_ABS) (c,d) for the Svalbard (a,c) and Kirkenes (b,d) populations. All values under treatment conditions (mean±s.e.) were normalized to values under control condition (control level =1). Significant differences between control values and values under treatment conditions are indicated by asterisks over treatment condition (*p<0.05, ^**p<0.01, ^***p<0.001).