Home range requirements in Bonelli’s eagle (Aquila fasciata): prey abundance or trophic stability?
dc.contributor.author | Martínez Miranzo, Beatriz | |
dc.contributor.author | Banda Rueda, Eva Isabel | |
dc.contributor.author | Aguirre de Miguel, José Ignacio | |
dc.date.accessioned | 2023-06-16T15:20:30Z | |
dc.date.available | 2023-06-16T15:20:30Z | |
dc.date.issued | 2019-10-28 | |
dc.description.abstract | Prey abundance is one of the limiting factors for establishment a home range. In particular, biomass abundance could act as a key element for generalist top predators, with wide prey type spectrum, for establishing their home ranges. We studied if biomass abundance may act as a limiting factor for the establishment of home range in a generalist top predator, Bonelli’s eagle (Aquila fasciata). We used GPS satellite data on breeding individuals over a 10-year period to deepen into home range behaviour. To quantify biomass abundance, we performed surveys at different periods of the year cycle for potential prey inside the home ranges and outside them. We checked if differences in biomass were identified between home ranges and potential adjacent areas. Also, annual and seasonal variation in biomass abundance may be recorded. Variations in biomass abundance among home range were detected but no annual or seasonal variation within home range was identified. Differences in biomass abundance were identified between each of the home range and their potential adjacent areas. Although biomass abundance is lower inside the home range, it remains stable throughout the year while strong fluctuations in biomass abundance were detected outside them. Our results show that Bonelli’s eagle may establish their home range based on permanent biomass stability (Trophic Stability Hypothesis) rather than great seasonal but unpredictable abundances. This approach may have strong implications for management conservation programs of territorial top generalist predators. | |
dc.description.abstract | La abundancia de presas es uno de los factores limitantes en el establecimiento de los territorios en muchas especies territoriales de animales. Utilizando datos de seguimiento satelital de una rapaz en peligro de extinción, el Águila de Bonelli, profundizamos en cómo la abundancia de biomasa puede afectar en el establecimiento de los territorios y la implicación que esto tiene en la conservación de la especie en Aragón, España. Nuestros resultados demuestran que esta rapaz establece su territorio buscando una disponibilidad estable de biomasa a lo largo del tiempo (hipótesis de la estabilidad trófica) en lugar de una abundancia de biomasa mayor pero fluctuante en el tiempo. Esta aproximación tiene importantes implicaciones en los programas de conservación de especies territoriales, como el Águila de Bonelli. | |
dc.description.department | Depto. de Biodiversidad, Ecología y Evolución | |
dc.description.faculty | Fac. de Ciencias Biológicas | |
dc.description.refereed | TRUE | |
dc.description.sponsorship | Ministerio de Economía y Competitividad (MINECO) | |
dc.description.status | pub | |
dc.eprint.id | https://eprints.ucm.es/id/eprint/61635 | |
dc.identifier.doi | 10.1007/s10344-019-1328-9 | |
dc.identifier.issn | 1439-0574 | |
dc.identifier.officialurl | https://link.springer.com/article/10.1007/s10344-019-1328-9 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14352/6413 | |
dc.issue.number | 85 | |
dc.journal.title | European Journal of Wildlife Research | |
dc.language.iso | eng | |
dc.publisher | Springer | |
dc.relation.projectID | (CGL2017-85637-P) | |
dc.rights.accessRights | restricted access | |
dc.subject.cdu | 574 | |
dc.subject.cdu | 598.279.2 | |
dc.subject.keyword | Bonelli’s eagle | |
dc.subject.keyword | home range establishment | |
dc.subject.keyword | trophic behaviour | |
dc.subject.keyword | biomass availability | |
dc.subject.keyword | prey survey | |
dc.subject.keyword | spatial ecology | |
dc.subject.ucm | Aves | |
dc.subject.ucm | Ecología (Biología) | |
dc.subject.unesco | 2401.20 Ornitología | |
dc.subject.unesco | 2401.06 Ecología animal | |
dc.title | Home range requirements in Bonelli’s eagle (Aquila fasciata): prey abundance or trophic stability? | |
dc.type | journal article | |
dc.volume.number | 65 | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | bb641627-9efa-45fa-a1c4-1b80bf5153bf | |
relation.isAuthorOfPublication.latestForDiscovery | bb641627-9efa-45fa-a1c4-1b80bf5153bf |
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