Figure 1
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 the thickness of the concentration boundary layer (CBL) of Acropora cytherea, Pocillopora verrucosa, and Porites cylindrica. (A) O2 and (B) H+ CBL thickness 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). Values are presented pooled over light and dark conditions. 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. Stars indicate significant differences between the control and OA treatment within each flow condition (p < 0.01**, from linear mixed-effects models with ANOVA).
