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(a) Specific (mass-based) night-time leaf respiration (at 15°C) of the dominant forb Leontodon helveticus and (b) specific fine root respiration (at 10°C) in unshaded (white circles) and shaded (black circles; gray circles indicate pre-shading values) plots of a mountain meadow. Error bars signify ± SE. * and **, Significant treatment effects for individual sampling dates at the levels of P < 0.05 and P < 0.001, respectively.
