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Fig. 4 | BMC Research Notes

Fig. 4

From: The consistent difference in red fluorescence in fishes across a 15 m depth gradient is triggered by ambient brightness, not by ambient spectrum

Fig. 4

Iris fluorescence measured during the brightness experiment. Iris fluorescence of Tripterygion delaisi measured as total photon radiance (photons s−1 sr−1 m−2) throughout the brightness treatment. Group 1 (n = 10) started with the dark light treatment (phase I) and changed to the bright light treatment (phase II) after 3 weeks. Group 2 (n = 9) received the reverse treatment. Lines represent mean photon radiance of group 1 (dashed) and 2 (solid)

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