Fig. 4
From: Extracellular enzymatic activities of octocorals and scleractinian corals under environmental stress
APA measured in the field (Red Sea), in corals from shallow depth (yellow plots) and mesophotic depth (“deep”, blue blots). The boxplots represent Alkaline phosphatase activity (APA, nmol p-NP mg−1 protein h−1) in octocorals (a) and hexacorals (b). Sarcophyton, Xenia and Rythisma are octocorals while Stylophora, Galaxea and Turbinaria are hexacorals. Asterisks indicate significant differences between shallow and deep condition for each species (**** for p < 0.0001). Significant differences between species within each depth are indicated by letters: plain letters (a, b) for shallow corals and letters with apostrophes (a′, b′) for deep corals. The APA measured was significantly higher in all hexacorals compared to all octocorals tested, for both depths. No data collected for Xenia from mesophotic depth.
