Female and male gametophyte survival after recovery.

Female (A) and male (B) gametophyte densities from the North Sea and Arctic populations of Laminaria digitata after 27 days of recovery at 5°C and 15°C from different treatments (15°C dark, 15°C, 20°C, 22.5°C and 25°C DHS). Box plots with median, boxes for 25th and 75th percentiles and whiskers indicating min and max values (n = 4). Different letters indicate significant differences among means for each treatment. See Table 4 for statistics.