Destacados
- ¡Abierta convocatoria para proyectos de investigación en la ICTS- Doñana!
- La Fundación Jaime González-Gordon ofrece cuatro becas para el desarrollo de Trabajos de Fin de Máster sobre Doñana
- Cinco contratos para desarrollar la tesis doctoral en la Estación Biológica de Doñana - CSIC
- Actividades de la Estación Biológica de Doñana en la Noche Europea de los Investigadores
- La ICTS-RBD se prepara para la 30ª Campaña de Anillamiento de Paseriformes Migratorios en Doñana
Noticias
Human-induced environmental disturbances increase hybridization rates between two Californian oaks
Wildfires, urbanization, and land-clearing for agriculture can be considered among the most important environmental disturbances in Mediterranean regions. Interspecific hybridization has been suggested to be linked to different sources of anthropogenic disturbance, but empirical support to this hypothesis is sparse. This study analyses the impacts of different sources of environmental disturbance on hybridization rates between two Californian oaks, the serpentine-soil specialist leather oak (Quercus durata) and the widespread Californian scrub oak (Quercus berberidifolia). Extensive genotypic obtained data across the distribution ranges of the two species revealed considerable rates of hybridization (> 25%), asymmetric gene flow from Q. durata into Q. berberidifolia, and a higher occurrence of hybrids in areas where both species live in geographical proximity. The analyses also showed that genetic admixture increased with wildfire frequency, but other sources of human-induced habitat alteration (urbanization, land clearing for agriculture) or a suite of ecological factors (climate, elevation, soil type) had no significant effects on hybridization rates. Overall, these findings reveal for the first time that wildfires constitute an important source of environmental disturbance that promotes hybridization between two ecologically well-differentiated native species. informacion[at]ebd.csic.es: Ortego et al (2016) Impacts of human-induced environmental disturbances on hybridization between two ecologically differentiated Californian oak species. New Phytol doi: 10.1111/nph.14182
http://onlinelibrary.wiley.com/doi/10.1111/nph.14182/full- Laboratorio de Ecología Molecular
- Laboratorio SIG y Teledetección (LAST)
- Laboratorio de Ecología Química
- Laboratorio de Ecología Acuática
- Laboratorio de Ecofisiología
- Laboratorio de Isótopos Estables
- Unidad de Experimentación Animal
- Visita virtual
- Unidad de Seguimiento
- Laboratorio de Camaras climaticas