3.2 Variation in the TNR limits
At the lineage level, our results reveal significant differences in the variance of the realized lower thermal limit compared to the realized upper thermal limit across all temperature measurements (mean, maximum, and minimum), regardless of the group of variables used (Bma, Bme, Bmi, Bsurf, and Msurf) or cell resolution (Fig 3A-B; Table SM4). The same pattern was observed in the Hydrophiinae subfamily (Fig 3C-D; Table SM4), whereas for the Laticaudinae subfamily, we found this pattern only in the minimum temperature measure at both resolutions (Fig 3E-F; Table SM4).
At the genus level, we observed higher variances in the lower limits than the upper limits for Aipysurus and Hydrophis and all temperature measures, repository and depth, and spatial resolution (Figure 3G-H; Table SM4). However, we did not find significant differences between the lower and upper limits in any temperature, repository and depth, and spatial resolution for theEmydocephalus genus (Figure 3I-J; Table SM4).