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Fig. 2. Illustration of experimental setting for diurnal light and
Fv/Fm measurements in Montipora
monasteriata. (A) Top view of the intact (i), and exposed (e) parts of
the skeleton; the position of the coral clip (cc) and the light meter (lm) can
be seen. The coral clip and light meter were mounted underneath or inside the
endolithic algae layer hence the broken line. Note the green pigment of the
endoliths in the exposed part. (B) Side view showing the two grooves drilled
for each of the pulse amplitude modulated (PAM) light meters can be seen
between the skeleton and the endolithic algae layer. Two PAM fluorometers were
used simultaneously.