Table 2. Numbers of specimens of vertebrate species studied on frequency occurrences and abundance of microplastics in each group of vertebrates and tadpoles, compared between inside and outside protected areas.
| Group | PA site | No. Sp. | No. specimen | MP occurrence (%) | Total MP | MP.ind−1 | MP.g−1 |
|---|---|---|---|---|---|---|---|
| Amphibians | Inside | 2 | 2 | 1 (50.00%) | 6 | 3.00 ± 4.24 | 0.013 ± 0.018 |
| Outside | 4 | 6 | 4 (66.67%) | 28 | 4.67 ± 8.62 | 0.05 ± 0.10 | |
| Snakes | Inside | 16 | 29 | 26 (89.66%) | 98 | 3.38 ± 2.96 | 0.03 ± 0.04 |
| Outside | 14 | 31 | 29 (93.55%) | 113 | 3.65 ± 3.46 | 0.07 ± 0.12 | |
| Lizards | Inside | 5 | 6 | 4 (66.67%) | 8 | 1.33 ± 1.37 | 0.02 ± 0.03 |
| Outside | 1 | 1 | 1 (100.00%) | 1 | 1 | 0.001 | |
| Birds | Inside | 5 | 5 | 4 (80.00%) | 11 | 2.20 ± 1.92 | 0.07 ± 0.06 |
| Outside | 6 | 10 | 9 (90.00%) | 30 | 3.00 ± 3.77 | 0.02 ± 0.02 | |
| Mammals | Inside | 1 | 1 | 1 (100.00%) | 2 | 2.00 | 0.009 |
| Outside | 1 | 1 | 1 (100.00%) | 2 | 2.00 | 0.003 | |
| Tadpoles | Inside | 4 | 26 | 14 (53.85%) | 24 | 0.92 ± 1.13 | 1.98 ± 6.06 |
| Outside | 4 | 18 | 17 (94.44%) | 64 | 3.56 ± 4.31 | 28.63 ± 43.59 | |
| All groups | Inside | 33 | 69 | 50 (72.46%) | 149 | 2.16 ± 2.45 | 0.77 ± 3.80 |
| Outside | 28 | 67 | 61 (91.05%) | 238 | 3.55 ± 4.25 | 7.73 ± 25.54 |