Fig. 5.

Performance index on an absorption basis (PI_ABS) as well as its variables RC/ABS, ${\mathrm{\phi }}_{\text{Po}}$/(1 − ${\mathrm{\phi }}_{\text{Po}}$) and ψo/(1 − ψo) in 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. (Data are means ± SD of ten replicates (n = 10). For each parameter, for each species, the treatments with a star (*) are significantly different from the respective control (26 °C), p < 0.05)