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From local monitoring to a broad-scale viability assessment: a case study for the Bonelli’s Eagle in western Europe

 

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dc.creator Hernández Matías, Antonio es
dc.creator Real, Joan es
dc.creator Moleón, Marcos es
dc.creator Palma, Luis es
dc.creator Sánchez Zapata, Jose Antonio es
dc.creator Pradel, Roger es
dc.creator Carrete, Martina es
dc.creator Gil Sánchez, Jose María es
dc.creator Beja, Pedro es
dc.creator Balbontín Arenas, Javier es
dc.date.accessioned 2017-07-14T14:55:14Z
dc.date.available 2017-07-14T14:55:14Z
dc.date.issued 2013-05
dc.identifier.citation Hernández Matías, A., Real, J., Moleón, M., Palma, L., Sánchez Zapata, J.A., Pradel, R.,...,Balbontín Arenas, J. (2013). From local monitoring to a broad-scale viability assessment: a case study for the Bonelli’s Eagle in western Europe. Ecological Monographs, 83 (2), 239-261.
dc.identifier.issn 0012-9615 es
dc.identifier.uri http://hdl.handle.net/11441/62535
dc.description.abstract Population viability analysis (PVA) has become a basic tool of current conservation practice. However, if not accounted for properly, the uncertainties inherent to PVA predictions can decrease the reliability of this type of analysis. In the present study, we performed a PVA of the whole western European population (France, Portugal, and Spain) of the endangered Bonelli's Eagle (Aquila fasciata), in which we thoroughly explored the consequences of uncertainty in population processes and parameters on PVA predictions. First, we estimated key vital rates (survival, fertility, recruitment, and dispersal rates) using monitoring, ringing, and bibliographic data from the period 1990-2009 from 12 populations found throughout the studied geographic range. Second, we evaluated the uncertainty about model structure (i.e., the assumed processes that govern individual fates and population dynamics) by comparing the observed growth rates of the studied populations with model predictions for the same period. Third, using the model structures suggested in the previous step, we assessed the viability of both the local populations and the overall population. Finally, we analyzed the effects of model and parameter uncertainty on PVA predictions. Our results strongly support the idea that all local populations in western Europe belong to a single, spatially structured population operating as a source-sink system, whereby the populations in the south of the Iberian Peninsula act as sources and, thanks to dispersal, sustain all other local populations, which would otherwise decline. Predictions regarding population dynamics varied considerably, and models assuming more constrained dispersal predicted more pessimistic population trends than models assuming greater dispersal. Model predictions accounting for parameter uncertainty revealed a marked increase in the risk of population declines over the next 50 years. Sensitivity analyses indicated that adult and pre-adult survival are the chief vital rates regulating these populations, and thus, the conservation efforts aimed at improving these survival rates should be strengthened in order to guarantee the long-term viability of the European populations of this endangered species. Overall, the study provides a framework for the implementation of multi-site PVAs and highlights the importance of dispersal processes in shaping the population dynamics of long-lived birds distributed across heterogeneous landscapes. es
dc.description.sponsorship Ministerio de Educación y Ciencia CGL200-64805/BOS CGL2010-17056 SAB-2006-0014/Roger es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher Wiley-Blackwell es
dc.relation.ispartof Ecological Monographs, 83 (2), 239-261.
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject Bird predator es
dc.subject Birds of prey es
dc.subject Hieraaetus fasciatus es
dc.subject Population viability analysis es
dc.subject Stochastic population dynamics es
dc.subject Spatially structured population es
dc.title From local monitoring to a broad-scale viability assessment: a case study for the Bonelli’s Eagle in western Europe es
dc.type info:eu-repo/semantics/article es
dc.type.version info:eu-repo/semantics/publishedVersion es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Zoología es
dc.relation.projectID CGL200-64805/BOS es
dc.relation.projectID CGL2010-17056 es
dc.relation.projectID SAB-2006-0014/Roger es
dc.relation.publisherversion http://dx.doi.org/10.1890/12-1248.1 es
dc.identifier.doi 10.1890/12-1248.1 es
idus.format.extent 23 p. es
dc.journaltitle Ecological Monographs es
dc.publication.volumen 83 es
dc.publication.issue 2 es
dc.publication.initialPage 239 es
dc.publication.endPage 261 es
dc.contributor.funder Ministerio de Educación y Ciencia (MEC). España
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