Electronic Supplementary Information (ESM) Table E1. Summary of meta-data sources used for Fig. 2 and subsequent multivariate analyses: 1 Temperature (T, ºC), 2 Irradiance (I, mol photons m-2 s-1), 3 Additional food and/or particulate organic supplement (all other studies provide a ‘natural’ supply of food via water supply to experimental systems from the associated reef or main aquaria system); 4 Inorganic nutrient addition (inorganic N and/or P); 5 Life History Stage (Adult, Juvenile (sensu Edmunds 2011) or New Recruit supply; 6 pCO2 concentration (atm) for the elected control, or ‘ambient’ (A), and treatments (T). Note that (i) categories 3 and 4 are based on varying concentrations between studies (that are rarely reported) and thus are simply included here as a binary, Yes (Y) or No (N), function to indicate whether manipulations were used to increase the concentrations above ambient, and (ii) * that mean hourly estimates were not reported but are based on (a) dawn-dusk cosine function weighted by the mean maximum daily irradiance (ca. 950 mol photons m-2 s-1, Anthony et al. 2008; 260 mol photons m-2 s-1, Albright, pers. comm.) at noon, or (b) daily integrated rates (mol photons m-2 d-1) adjusted to mol photons m-2 s-1 assuming a 12h light cycle (Langdon & Atkinson 2005). Note also that data from one source (Hii et al. 2009) could not be included since the reported changes in the carbonate chemistry parameters (pH, HCO3-, CO3-2 and CO2) did not equate to enable a derivation of values for pCO2. Species Acropora cervicornis Acropora eurystoma Acropora intermedia Acropora muricata Acropora palmata Acropora sp. Acropora verweyi Astrangia poculata Astrangia poculata Cladocora caespitosa T1 25 24 25, 28 27 28 27 27 26 16, 24 8 x 13-25 I2 250 340 585* 1343 160* 450 300 78 20 15, 30, 40, 60 F sup3 IN add4 LHS5 N N N N N N N Y Y N Y N N Y N N N Y Y N A A A A NR A A A A A A 364 315 300 413 436 360 412 390 394 425 pCO26 T 743 176, 227, 528, 889 613, 1180 336, 614, 801, 1134, 1441 559, 882 200, 280, 560, 1000 865 780 736 741 Citation Renegar & Riegl 2005 Schneider & Erez 2006 Anthony et al. 2008 Chauvin et al. 2011 Albright et al. 2012 Gatusso et al. 1998 Marubini et al. 2003 Holcomb et al. 2010 Holcomb et al. 2012 Rodolfo-Metalpa et al. 2010 Favia fragum Fungia fungites Fungia paumotensis Fungia repanda Fungia scutaria Galaxea fascicularis Madracis auretenra Montipora capitata Montipora capitata Oculina arbuscula Pavona cactus Pocillopora meandrina Porites astreoides Porites australiensis Porites compressa Porites compressa Porites compressa Porites lobata Porites lutea Porites lutea Porites panamensis Porites rus Porites rus Porites sp. Porites sp. Porites sp. Stylophora pistillata Stylophora pistillata Stylophora pistillata Stylophora pistillata 25, 29 25 25 25 25 27 28 23-27 27 25 27 27, 29 29 27 24 27 23-27 25, 28 25 25 29 27, 29 26, 29 25 26, 29 26, 29 27 27 25 25, 28 61 17 17 17 17 300 200 440, 925* 600 93 300 800 61 130 81, 150, 700 400 440, 925* 585* 17 13 135 800 600 200 600 600 450 300 200 380 N N N N N N Y N N Y N N N N N N N N N N N N N N N, Y N N N N N N N N N N N N Y N N N N N N N Y Y N N N N N N N N N N N N N NR A A A A A A A A A A A NR A A A A A A A NR A A A J A A A A A 437 279 275 340 440 412 391 400 480 409 412 395 476 369 440 752 400 300 400 319 540 395 525 385 390 525 360 365 385 460 756, 1940 176, 707 160, 661 190, 746 195, 999 865 876, 1406 526, 768 750 606, 903, 2856 865 720 786, 1991 1307, 1997 186 3982 526, 768 613, 1180 226, 804 119, 186, 712 962, 1006 720 1046 1904, 3970 785 1046 200, 280, 560, 1000 99, 161, 233, 389, 602 1904, 3970 760 Du Patron et al. 2010 Hossain & Ohde 2006 Hossain & Ohde 2006 Hossain & Ohde 2006 Hossain & Ohde 2006 Marubini et al. 2003 Jury et al. 2010 Langdon & Atkinson 2005 Jokiel et al. 2008 Ries et al. 2009, 2010 Marubini et al. 2003 Muehllehner & Edmunds 2008 Du Patron et al. 2010 Iguchi et al. 2011 Marubini et al. 2001 Marubini & Atkinson 1999 Langdon & Atkinson 2005 Anthony et al. 2008 Hossain & Ohde 2006 Ohde & Hossain 2004 Anlauf et al. 2010 Muehllehner & Edmunds 2008 Edmunds et al. 2012 Krief et al. 2010 Edmunds 2011 Edmunds et al. 2012 Gatusso et al. 1998 Marubini et al. 2008 Krief et al. 2010 Reynaud et al. 2003 Turbinaria reniformis 27 300 N N A 412 865 Marubini et al. 2003 Table E2. Mean (± standard error; n = 4) of calcification and gross photosynthesis rates measured under ambient light (GL, mol CaCO3 cm-2 h-1; PG, mol 2 cm-2 h-1), the corresponding calcification(GD, mol CaCO3 cm-2 h-1) and respiration rate (RD, mol 2 cm-2 h-1) measured in darkness; hence the extent of light enhanced calcification (GL: GD, mol: mol) and the ratio of PG-to-RD (PG: RD, mol: mol). Growth treatments are low light (LL, 100 mol photons m-2 s-1) versus high light (HL, 400 mol photons m-2 s-1) and ambient CO2 (A-CO2, 390 atm) versus intermediate CO2 (I-CO2, 725 atm). Response Treatment A. horrida P. cylindrica GL LL A-CO2 0.221 (0.053) 0.186 (0.016) (mol CaCO3 cm-2 h-1) LL I-CO2 0.111 (0.018) 0.026 (0.009) HL A-CO2 0.376 (0.065) 0.456 (0.029) HL I-CO2 0.340 (0.048) 0.217 (0.038) GD LL A-CO2 0.136 (0.009) 0.132 (0.003) (mol CaCO3 cm-2 h-1) LL I-CO2 0.068 (0.029) 0.017 (0.006) HL A-CO2 0.237 (0.049) 0.330 (0.019) HL I-CO2 0.126 (0.032) 0.085 (0.026) GL: GD LL A-CO2 1.654 (0.083) 1.416 (0.126) (mol: mol) LL I-CO2 1.676 (0.321) 1.514 (0.292) HL A-CO2 1.587 (0.096) 1.385 (0.228) HL I-CO2 2.689 (0.184) 2.553 (0.333) PG LL A-CO2 0.479 (0.071) 0.344 (0.047) (mol O2 cm-2 h-1) LL I-CO2 0.541 (0.084) 0.379 (0.123) HL A-CO2 0.531 (0.101) 0.471 (0.072) HL I-CO2 0.857 (0.128) 0.578 (0.085) RD LL A-CO2 0.184 (0.032) 0.167 (0.019) (mol O2 cm-2 h-1) LL I-CO2 0.178 (0.029) 0.162 (0.025) HL A-CO2 0.198 (0.032) 0.186 (0.017) HL I-CO2 0.193 (0.034) 0.166 (0.029) PG: RD LL A-CO2 2.609 (0.032) 2.078 (0.054) (mol: mol) LL I-CO2 3.048 (0.079) 2.387 (0.107) HL A-CO2 2.705 (0.082) 2.291 (0.067) HL I-CO2 4.455 (0.275) 3.503 (0.971) Figure E1. Corresponding measures of coral calcification rates measured in darkness (GD) and under ambient light (GL) from studies in Table S1 where both GL and GD were measured for the same species and treatments (Acropora eurystoma; Schneider & Erez 2006; Cladocera caespitosa, Rodolfo-Metalpa et al. 2010; Porites lutea, Ohde & Hussain 2004, 2006; Fungia scutaria, Fungia repanda, Fungia fungites, Fungia paumotensis, Ohde & Hussain 2006) (n=21). As with Fig. 1, GL, GD and are expressed as values determined for treatments (T) relative to the control (‘ambient’, A; typically present day) conditions. ESM References: Albright R, Mason B, Miller M, Langdon C (2012) Ocean acidification compromises recruitment success of the threatened Caribbean coral Acropora palmata. Proc Natl Acad Sci USA 107:20400-20404 Anlauf H, D’Croz L, O’Dea A (2011) A corrosive concoction: The combined effects of ocean warming and acidification on the early growth of a stony coral are multiplicative. 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