Table 5
Dispersion of observations around their centroid in the reduced space generated by the NMDS analysis and the ratio of plant richness consumed to invertebrate richness consumed for each species. Average distances to centroids were calculated only for species with at least 5 analyzed samples. n.d.: not determined. BOU: Bouvaque, CLE: Cléry-sur-Somme, HAI: Hailles, MAI: Marais d'Isle, MOR: Morcourt, TVA: Trois Vaches.
| n | Average distance from centroids | Diet taxonomic richness | Plants/Invertebrates ratio | Main diet | ||
|---|---|---|---|---|---|---|
| Bird species | Plants | Invertebrates | ||||
| Anas platyrhynchos | 5 | 0.059 ± 0.013 | 12 | 3 | 4.0 | Omnivorous |
| Ardea cinerea | 3 | n.d. | 5 | 4 | 1.3 | Piscivorous |
| Columba palumbus | 7 | 0.045 ± 0.011 | 11 | 2 | 5.5 | Herbivorous |
| Cygnus olor | 3 | n.d. | 3 | 5 | 0.6 | Herbivorous |
| Fulica atra | 16 | 0.051 ± 0.012 | 11 | 9 | 1.2 | Omnivorous |
| Gallinula chloropus | 5 | 0.023 ± 0.005 | 5 | 3 | 1.7 | Omnivorous |
| Phasianus colchicus | 3 | n.d. | 7 | 3 | 2.3 | Omnivorous |
| Turdidae | 6 | 0.066 ± 0.008 | 12 | 4 | 3.0 | Omnivorous |
| Sites | ||||||
| BOU | 14 | 0.035 ± 0.004 | ||||
| CLE | 11 | 0.069 ± 0.013 | ||||
| HAI | 4 | n.d. | ||||
| MAI | 11 | 0.049 ± 0.012 | ||||
| MOR | 5 | 0.060 ± 0.013 | ||||
| TVA | 3 | n.d. | ||||
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