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. 2021 Sep 13;11:18134. doi: 10.1038/s41598-021-97447-5

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Physiological and photochemical analyses of Oculina patagonica from 30 m ('Deep', blue boxes) and 2 m ('Shallow', red boxes) water depth. Subplots in upper panel are (A) protein concentration, (B) calcification rate, (C) algal cell density normalized to protein concentration, (D) chlorophyll concentration per skeletal surface area, (E) chlorophyll concentration per algal cell. Lower panel (F) maximum quantum yield, (G) relative maximum electron transport rate, (H) saturating irradiance (µmol m⁻² s⁻¹), (I) photosynthetic efficiency at light limiting irradiances, (J) the downward slope following maximal electron transport rate. Horizontal black lines within boxes are median values and box limits represent 1st and 3rd quartiles. Whiskers represent 1.5 times the interquartile range. Round black points are individual sample data.