Figure 2
From: Effects of water flow and ocean acidification on oxygen and pH gradients in coral boundary layer
Effects of water flow and ocean acidification (OA) on traits of the concentration boundary layer (CBL) of Acropora cytherea, Pocillopora verrucosa, and Porites cylindrica. (A) O2 concentration change at the coral surface relative to bulk seawater (surface ∆O2), (B) pH change at the coral surface relative to bulk seawater (surface ∆pH), and (C) O2 flux, after four months in a control and OA treatment and measured in light or darkness combined with low flow (LF, 2 cm s-1) and moderate flow (MF, 6 cm s-1). Boxes represent the first and third quartiles with lines as medians and whiskers as the minimum and maximum values or up to the 1.5 * interquartile range (IQR), whichever is reached first. No significant interactive effects of flow and OA were observed.
