129 Table 15 SI Appendix. Assessment of the GLS nesting habitat suitability for loggerhead turtle nesting activity in relation with the selected habitat geomorphological variables’ state. Adapted from Garcin et al. (2022). Geomorphological factor index Nesting site accessibility, attractiveness, excavation Indicator value Erosion scarp height No erosion scarp Easily accessible +2 Erosion scarp up to 0.4m Accessible +0 Erosion scarp up to 0.8m Hardly accessible -1 Erosion scarp up to 1.0m Not crossable -2 Erosion scarp > 1.0m Not crossable -2 Beach rock characteristics No beach rock Very favorable +2 Very oblique in relation to the shore Very favorable +2 Inline slope without protruding Favorable +1 Inline slope with protruding Unfavorable -1 Inverted slope Unfavorable -1 Stair-like multi-beds Unfavorable -1 Weathered and holed Unfavorable -1 Dismantled Highly unfavorable -2 Raised Inaccessible -2 Vegetal debris Lack of vegetal/wood debris Good accessibility, easy excavation +2 Rare vegetal/wood debris, isolated tree branches Fairly good accessibility, disruptions during excavation +1 Backshore with bushes or low density stumps and roots Difficult accessibility + excavation -1 Numerous wood tree roots exposed Difficult to impossible accessibility + excavation -2 Numerous wood or bushes stumps Difficult to impossible accessibility + excavation -2 Sediment granulometry at turtle nesting site Fine sand Very attractive +2 Medium sand Attractive +1 Sand (fine to medium) with rare debris Attractive +1 Coarse sand Moderately attractive 0 Sand (fine to medium) with numerous debris Low attractiveness -1 Coarse coral debris Not adapted -2 Beach rock bed or blocks Not adapted -2
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