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Título: | Farmland habitat selection of wintering lesser kestrels in a Spanish pseudosteppe: Implications for conservation strategies |
Autor: | Tella, José Luis CSIC ORCID; Forero, Manuela G. CSIC ORCID | Fecha de publicación: | 2000 | Editor: | Kluwer Academic Publishers | Citación: | Biodiversity and Conservation 9: 433- 441 (2000) | Resumen: | The lesser kestrel Falco naumanni is a globally threatened species, whose breeding populations seem to have declined due to recent agricultural changes. However, nothing is known about habitat requirements during winter, despite the fact that several populations are overwintering in areas affected by agricultural transformations. We studied population size and habitat selection by wintering lesser kestrels in a Spanish pseudosteppe (Los Monegros), where traditional fallow systems for cereals are rapidly being replaced by intensive and/or irrigated crops. About 15% of the adult population wintered in the study area, as determined by systematic roadside counts compared with accurate censuses made during the breeding season. Wintering lesser kestrels preferred to forage on field margins and stubble, while avoiding abandoned fields, ploughs, scrubland, growing cereals and, mainly, the expanding irrigated crops. This work confirms the need to incorporate the habitat requirements of threatened species over their complete annual cycles; while breeding lesser kestrels scarcely use fallow (ploughed at that time), during the winter, fallow (stubble at that time) is their main foraging habitat. Both fallow land and the present agricultural calendar should be maintained to assure the conservation of wintering lesser kestrel populations. | URI: | http://hdl.handle.net/10261/57856 | DOI: | 10.1023/A:1008943116150 | Identificadores: | doi: 10.1023/A:1008943116150 issn: 0960-3115 |
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