FIGURE 4.

Spectral light enhancement in bleached relative to healthy corals. The enhancement in E₀(λ) and R_H(λ) due to bleaching was calculated as E₀(λ)_bleached/E₀(λ)_healthy and R_H(λ)_bleached/R_H(λ)_healthy. R_H(λ) (dotted lines) was measured at a distance of 1 cm from the tissue surface and E₀(λ) was measured at the tissue surface (dashed lines) and in the aboral tissue layers closest to the skeleton (solid lines). Data was collected for both polyp (blue) and coenosarc tissues (red) for P. damicornis (A), and Favites sp. (B). Note that P. damicornis R_H(λ) measurements include areas covering both polyp and coenosarc tissues, and that E₀(λ) measurements were not performed in aboral coenosarc tissues of P. damicornis due to lack of sufficient tissue thickness. Original R_H(λ) spectra for bleached and healthy corals are shown in Supplementary Figure S5.