Table 4. Comparison of environmental features between actual nests sites of marine turtles and the full set of random locations sampled within a 50-m radius of each nest site.

Variable	Nests	Reference	Nests	Reference	SIMPER			PERMANOVA
	Mean (95% Confidence interval)	Mean (95% Confidence interval)	Median (Interquartile range)	Median (Interquartile range)	Average squared distance	Sq. dist./SD	Contrib. %	F	P
Illuminance (mcd m2)	4.26 (2.50–6.03)	3.67 (2.99–4.34)	3.48 (1.64–7.07)	3.14 (1.56–5.31)	2.42	0.66	11.69	0.63	0.46
Dune crest height (m)	6.43 (5.64–7.21)	6.21 (5.85–6.56)	6.33 (5.38–7.34)	6.16 (5.61–7.01)	2.22	0.61	10.75	0.36	0.57
Beach slope (deg)	5.16 (3.85–6.47)	4.99 (4.37–5.61)	5.63 (3.49–6.71)	5.28 (4.19–6.13)	2.17	0.66	10.47	0.07	0.79
Beach width (m)	19.34 (13.96–24.72)	19.56 (16.53–22.59)	17.70 (12.29–22.96)	17.56 (12.7–24.91)	1.99	0.62	9.61	0.01	0.93
Dune width (m)	12.18 (8.93–15.43)	11.67 (9.81–13.53)	10.64 (7.01–15.93)	9.82 (7.6–14.62)	1.98	0.53	9.56	0.08	0.79
Dune slope (deg)	15.76 (12.72–18.79)	15.99 (14.14–17.83)	16.07 (10.69–19.19)	15.90 (12.83–18.5)	1.92	0.62	9.28	0.02	0.90
Distance to urban land use (m)	178 (120–237)	177 (139–215)	151 (104–198)	142 (90–192.8)	1.86	0.52	9.01	0.00	0.97
Profile curvature (rad/m)	−0.0094 (−0.0239–0.0050)	−0.0047 (−0.0191–0.0098)	0 (−0.04–0.01)	0 (−0.01–0.01)	1.61	0.25	7.77	0.17	0.71
Distance to dense vegetation (m)	6.12 (4.31–7.94)	7.56 (5.32–9.80)	4.91 (2.73–9.51)	6.51 (0.2–13.45)	1.55	0.59	7.50	0.57	0.45
Distance to sparse vegetation (m)	1.42 (0.99–1.85)	2.78 (1.60–3.97)	1.35 (0.80–1.87)	0.89 (0.14–3.51)	1.49	0.41	7.19	1.93	0.18
Terrain ruggedness	0.026 (0.015–0.038)	0.044 (0.0227–0.0660)	0.02 (0.01–0.04)	0.02 (0.01–0.04)	1.48	0.24	7.15	0.98	0.36