Biodiversity & Conservation

, Volume 11, Issue 6, pp 975–985 | Cite as

Factors influencing the decline of a Bonelli's eagle Hieraaetus fasciatus population in southeastern Spain: demography, habitat or competition?

  • Martina Carrete
  • José Antonio Sánchez-Zapata
  • José Enrique Martínez
  • Miguel Ángel Sánchez
  • José Francisco Calvo


We investigated three possible causes of territory desertion among Bonelli's eagles Hieraaetus fasciatus in Murcia (southeastern Spain): low demographic parameters, low habitat quality and competition with Golden eagles Aquila chrysaetos. From 1983 to 1997, we surveyed a Bonelli's eagle population. Abandoned and occupied territories were compared to find differences in demographic parameters (flight rate, productivity and mortality) or habitat characteristics. Mortality was significantly higher in abandoned territories. Abandoned territories also had larger areas of forest and extensive agriculture, while occupied territories had more shrublands. Competition with Golden eagles was not a determinant of territorial abandonement but interacted with human persecution of the species. Management implications are discussed.

Competition Conservation Demography Flagship species Habitat Hieraaetus fasciatus 


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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Martina Carrete
    • 1
  • José Antonio Sánchez-Zapata
    • 2
  • José Enrique Martínez
    • 1
  • Miguel Ángel Sánchez
    • 3
  • José Francisco Calvo
    • 1
  1. 1.Departamento de Ecología e HidrologíaUniversidad de Murcia, Campus de EspinardoMurciaSpain
  2. 2.Departamento de Biología AplicadaUniversidad Miguel Hernández, Ctra. de Beniel km 3.2, Area de EcologíaOrihuela, AlicanteSpain
  3. 3.Ctra. de los Jerónimos 69MurciaSpain

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