1. Whole-colony responses of P
Whole-colony responses of P. verrucosa to incubations under factorial combinations of temperature and PCO2, based on trials conducted in 2014 and 2015.
Whole-colony responses of P. verrucosa to incubations under factorial combinations of temperature and PCO2, based on trials conducted in 2014 and Trials were conducted at 26.5 versus 29.7°C and at ambient (∼400 µatm) versus high (∼1000 µatm) PCO2, and values are plotted as a function of size (tissue surface area). (A,B) Calcification, (C,D) aerobic respiration and (E,F) gross photosynthesis. Each symbol represents the results from one coral colony, and the solid lines show the fitted partial regression coefficients from the linear mixed-effects model (Table 2). The dashed lines show the expected whole-colony responses calculated by scaling up the area-normalized responses for the average tissue surface area for corals in our small size class (14.49 cm2) based on parameters in Table 3 [i.e. if the area-normalized regression in each treatment is y=α+βx, where x is colony tissue surface area in cm2, then the expected whole-colony response would be yexpected=α + (β×14.49)x]. Sample sizes in Trial 1: N=8 for all treatment combinations; in Trial 2: N=12 in LT-AC and HT-AC, N=8 in LT-HC and N=11 in HT-HC.
Peter J. Edmunds, and Scott C. Burgess J Exp Biol 2016;219:
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