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handle: 10261/48674
El nóctulo gigante, murciélago de amplia distribución pero de escasas citas fuera de la península Ibérica, es abundante en España en ciertas localidades destacando la población de Sevilla que es, probablemente, la más importante a nivel mundial. La existencia de estas colonias en el medio urbano se debe a la presencia de árboles de gran tamaño con huecos que los utilizan como refugios. En poblaciones conocidas, cada grupo familiar utiliza de forma simultánea varios refugios (hasta unos 20 diferentes durante la temporada de cría). Para asegurar la supervivencia de una población es necesario contar con un gran número de árboles con refugios. Las principales amenazas para la especie son la eliminación de árboles viejos y la competencia por los huecos de los árboles con las cotorras. Como la disponibilidad de refugios tiende a descender y la población de cotorras a aumentar, se deben tomar medidas de urgencia tales como instalar en los parques caja refugios para murciélagos, establecer programas de seguimiento de la población nidificante de cotorras y diseñar campañas de erradicación
The giant noctule bat, although exhibiting a broad distribution, is a rare bat species outside the Iberian Peninsula. However, it can be locally abundant in Spain, where the population of the city of Seville is very likely to be the most important of the world. The occurrence of colonies of this bat inside an urban habitat is probably due to the presence of large trees with cavities, as these are used as day roosts. In the monitored populations, each familiar group uses several roosts simultaneously (up to 20 different tree roosts during the breeding season). For the persistence of a population, it is necessary to preserve a high number of potential tree roosts. The greatest threat for this species is the removal of old trees and the competition with Psittacula for suitable cavities for roosting. As availability of roosts tends to decline whereas the Psittacula population is increasing, urgent measures must be implemented, like installation of bat boxes in urban parks, monitoring programs of the breeding population of Psittacula and design of eradication campaigns
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Cotorras, refugios, nóctulos gigantes
Cotorras, refugios, nóctulos gigantes
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