Papers by Belen Villanueva
1. The marshes of the Guadalquivir river and other wetlands in southwest Spain (study area) have ... more 1. The marshes of the Guadalquivir river and other wetlands in southwest Spain (study area) have been widely reclaimed for agriculture. One of the bird species affected by this land-use policy is the Collared pratincole Glareola pratincola. Since reclamation started, there has been a general decline of the population in the study area. 2. Collared pratincoles in the study area use marshland and farmland habitats for breeding with approximately half the population in each. However, marshland availability is only 3% of that of farmland. Colonies in farmland are found mostly in cotton fields. 3. Collared pratincoles chose marshland to breed. Here low vegetation cover and dry soil are important for settlement. In farmland, low vegetation cover, dry soil and flat terrain are important factors. Changes in crops affect pratincole colony location from year to year, but they tend to stay in the same areas. 4. Nest-site selection is not determined by the proximity of tussocks or the height of...
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Papers by Belen Villanueva