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. 2017 Jan 24;8:59. doi: 10.3389/fmicb.2017.00059

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Copyright © 2017 Wangpraseurt, Holm, Larkum, Pernice, Ralph, Suggett and Kühl.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effect of bleaching on in vivo photon scalar irradiance, E₀(PAR)-enhancement. Typical measurement locations over the coenosarc and polyp tissues of Pocillopora damicornis (a) and Favites sp. (b,c). Scale bar = 1 mm (a) and 2 mm (b,c). Note the scalar irradiance microprobe (b) and extruded mesenterial filaments (mf) in the stressed Favites sp. coral (c). E₀(PAR)-enhancement was expressed as E₀(PAR)/E_d(PAR) and was measured in healthy and bleached P. damicornis (d) and Favites sp. (e). Measurements were performed on the surface of coenosarc and polyp tissues as well as in the lowermost aboral tissue layer (vertical depths closest to the skeleton) for healthy (day 1) and bleached corals (day 10). Data are mean ± SE (n = 6 corallite-level replicates).