Skip to main content
. 2013 Feb 6;8(2):e54989. doi: 10.1371/journal.pone.0054989

Figure 12. Effects of seawater temperature on percent viable endosymbiotic Symbiodinium and host coral Xenia elongata cells.

Figure 12

In-hospite, collected over a12 h period. Corals exposed to 28 to 36°C treatments. • = 28°C; ○ = 30°C;▾ = 32°C; Δ = 34°C; ▪ = 36°C. Data transformed by arcsine for normalization purposes. Zooxanthellae: No significant linear regression at 28–30°C (p>0.05); i.e., regression coefficient not significantly different from “0″. Significant non-linear responses at 32–36°C (p<0.001; Y = 24.315+43.420*(1-e[−0.507X]); Y = 2.859+65.500*(1−e[−0.959X]); and Y = 45.335+31.910*(1−e[−0.434X]), respectively). Host Cells: No significant linear regression at 28°C (p>0.05); i.e., linear regression coefficient not significantly different than “0″. Significant non-linear responses at 30, 32, 34, and 36°C (p<0.001; Y = 46.369+33.664*(1−e[−0.411X]); Y = 30.191+48.525*(1−e[−0.879X]); Y = 10.899+65.806*(1−e[−0.597X]), and Y = 51.409+16.910*(1−e[−0.625X]), respectively).