Effect of temperature and salinity on maximum
germination
Mean germination was affected by both location and temperature
treatment, however, there was no interaction between the two covariates,
highlighting that thermally affected seeds did not respond differently
to temperature treatments. Salinity increased germination (p = 0.035,
Table 2) but did not have any significant interaction effects between
treatment and source. Emmeans post hoc highlighted that all treatments
had significantly less germination when compared to the 16°C treatment
but were not different from each other (Figure 4; Table 2). Further,
there were significant differences between the 16°C treatments held at
32 ppt salinity in thermally affected locations compared to the 16°C in
ambient locations, with germination rates of 5.5% (± 1.08) and 2.8
(±.58) respectively (Figure 4).