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Maximum photochemical efficiency of PSII (Fv/Fm) of the whole BSC community (a), S. lentigera (b), and D. diacapsis (c) between November 2008 and November 2011. Data represent means ± s.e. (n = 6). Brown lines, control; orange lines, rainfall exclusion; light green lines, warming; dark green lines, warming and rainfall exclusion.
