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Fig. 2. Diel cycles of in situ measurements of net photosynthesis
(circles) and light intensity (solid line) of the corals F. favus
(A), P. sinuosa (B) and G. lobata (C), performed using the
three-chamber submersible respirometer. Changes in the maximum quantum yield
of photochemistry in PSII under ambient light
(
F'/Fm'; triangles) were
determined using the fast repetition rate fluorometer (FRRF). Measurements
were performed in Eilat, Red Sea between 31 July and 2 August 2001.