Fig. 4.

Energy flux ratios (${\mathrm{\phi }}_{\text{Po}}$, ${\mathrm{\phi }}_{\text{Eo}}$ and ψ_o) of Kappaphycus alvarezii (a) and Kappaphycus striatum (b) thalli after exposure to 26 °C (the control) and low temperatures (23, 20 and 17 °C) for 2 h, respectively. (Means ± SD of ten replicates (n = 10) are presented. For each species, the treatment with a star (*) indicates that there is a significant difference between this temperature treatment and the control (26 °C), p < 0.05)