Table 1.
List of predictors related to the avian community inhabiting the Salburua wetland used for building the model
| Predictor | Definition |
|---|---|
| Census of wild birds | Total wild bird counts per census session (monthly) |
| Species richness | Number of wild bird species |
| Order | Counts of waterbird per orders (Anseriformes, Charadriiformes, Ciconiiformes, Gruiformes, Pelecaniformes, Podicipediformes) |
| Species | Counts of waterbird per species |
| Anseriformes and Charadriiformes | Counts of Anseriformes and Charadriiformes individuals |
| non-Anseriformes and non-Charadriiformes | Counts of non-Anseriformes and non-Charadriiformes individuals |
| Anatini | Counts of dabbling ducks |
| Aythyini | Counts of diving ducks |
| Grazers | Counts of Anas penelope, Anas crecca, Anser anser and Fulica atra |
| Gulls | Counts of Larus michahellis, Larus fuscus and Chroicocephalus ridibundus |
| Divers | Counts of Aythya ferina, Aythya fuligula and Fulica atra |
| Phenology | Waterfowl life cycle events: northward spring migration, breeding, southward autumn migration, winteringa |
| Breeding couples | Counts of breeding couples per species (Anas clypeata, Anas platyrhynchos, Anas strepera, Anser anser, Aythya ferina, Aythya fuligula, Ardea cinerea, Ardea purpurea, Ciconia ciconia, Circus aeruginosus, Charadrius dubius, Fulica atra, Gallinula chloropus, Himantopus himantopus, Ixobrychus minutus, Larus michahellis, Nycticorax nycticorax, Podiceps cristatus, Rallus aquaticus and Tachybaptus ruficollis) |
| Breeding Anseriformes | Counts of breeding couples of Anseriformes members |
| Breeding non-Anseriformes and non-Charadriiformes | Counts of all breeding couples excluding Anseriformes and Charadriiformes |
| Summer visitor birds | Counts of summer visitor birds |
| Summer visitor species richness | Number of summer visitor species |
| Winter visitor birds | Counts of winter visitor birds |
| Winter visitor species richness | Number of winter visitor species |
| Migratory birds | Counts of migratory birds |
| Migratory species richness | Number of migratory species |
| Resident birds | Counts of resident birds |
| Resident species richness | Number of resident species |
VIF < 2 in underline.
aWintering: November–January; northward spring migration: February–April; breeding: May–July and AM southward autumn migration: August–October.