Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Population resilience of the Mediterranean monk seal Monachus monachus at Cabo Blanco peninsula
Año:2012
Áreas de investigación
  • Ciencias de la tierra,
  • Medio natural,
  • Protección del medio ambiente
Datos
Descripción
Environmental and demographic stochasticity alone can push small populations to extinction. However, some small populations can persist for a long time at a low density, maintaining potential for rapid growth. We investigated the demographic mechanisms underlying the response of the population of the Mediterranean monk seal Monachus monachus on the Cabo Blanco peninsula (Mauritania/Morocco). The population was dramatically reduced after a demographic crash in 1997, which was initially thought to have pushed the population toward extinction. Census data, individual-based data on presence?absence and breeding state data were obtained by direct observation, by photo-identification and through the analysis of video images at the only known breeding sites for the species. We found that the monk seal population at Cabo Blanco is recovering, with means of 31 (24.8, 36.8) sub-adults, 46 (42.3, 49.7) adult females and 39 (29.1, 48.4) adult males using the 2 breeding sites in 2007. The population structure is similar to proportions prior to the mass mortality event. Annual survival probabilities for sub-adults, adult females and adult males were 0.81 (0.676 to 0.904), 0.99 (0.926 to 0.998) and 0.87 (0.81 to 0.94), respectively. At present, juvenile survival is unknown, but the high survival of females and the high breeding potential are likely to be responsible for the population recovery.
Internacional
Si
JCR del ISI
Si
Título de la revista
Marine Ecology-Progress Series
ISSN
0171-8630
Factor de impacto JCR
2,711
Información de impacto
Volumen
DOI
Número de revista
Desde la página
273
Hasta la página
281
Mes
SIN MES
Ranking
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Participantes
  • Autor: María Martínez Jáuregui (UPM)
  • Autor: G. Tavecchia
  • Autor: M.A. Cedenilla
  • Autor: T. Coulson
  • Autor: P. Fernández de Larrinoa
  • Autor: M Muñoz
  • Autor: L.M. González
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Economía y Sostenibilidad del Medio Natural
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