Fv/Fm amplitudes of thallus branches
|
Sampling event
|
---|
October 2011
|
March 2012
|
May 2012
|
August 2012
|
---|
High-light stress phase
|
Mast-ex
|
0.124 ± 0.026c
|
0.059 ± 0.014a
|
0.181 ± 0.023a
|
0.193 ± 0.026b
|
Mast-ov
|
0.197 ± 0.024b
|
0.044 ± 0.017a
|
0.234 ± 0.027a
|
0.112 ± 0.026c
|
Chon-ov
|
0.292 ± 0.033a
|
0.038 ± 0.011a
|
0.219 ± 0.027a
|
0.270 ± 0.035a
|
Recovery phase
|
Mast-ex
|
0.135 ± 0.028
|
0.024 ± 0.013
|
0.069 ± 0.022
|
0.080 ± 0.036
|
Mast-ov
|
0.200 ± 0.024
|
0.035 ± 0.013
|
0.188 ± 0.028
|
0.081 ± 0.025
|
Chon-ov
|
0.128 ± 0.063
|
0.024 ± 0.007
|
0.145 ± 0.024
|
0.191 ± 0.048
|
- For this, differences between the beginning and end of the high-light stress phase (beginning of experiment and 120 min of high-light exposure) and the recovery phase (120 min of high-light exposure and 120 min of recovery) were calculated from absolute Fv/Fm values, respectively. Table shows mean ± SEM (n = 5). Different letters (a, b and c) indicate significant differences among algal isolates within one of the four sampling events (significant interaction isolate × sampling event of 2-way ANOVA followed by a Fisher’s LSD test, p < 0.05)
- Mast-ex, Mastocarpus stellatus from higher levels of the lower intertidal; Mast-ov, Mastocarpus stellatus from overlapping zone in deeper levels of lower intertidal; Chon-ov, Chondrus crispus from overlapping zone in deeper levels of lower intertidal; SEM, standard error of the mean