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The net photosynthetic CO2 assimilation rate (AN) and dark respiration (Rdark) of D. antarctica (A, C) and C. quitensis (B, D) in King George (KGI) and Lagotellerie Island (LAG), measured at 10 °C (white bars) or 15 °C (gray bars). Values are means ± SE (n=5–7). Different letters indicate statistically significant differences for each species between populations and measurement temperature according to Tukey (P<0.05).
