Détail de l'auteur
Documents disponibles écrits par cet auteur (9)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Sonja C. Ludwig, Auteur ; Staffan Roos, Auteur ; David Baines, AuteurWorldwide, many wader species have recently exhibited steep declines in range and abundance. Low productivity, frequently associated with predation, is considered a major proximate driver of declines and often reflects underlying land use and ha[...]
Article
Sonja C. Ludwig, Auteur ; Aly McCluskie, Auteur ; Paula Keane, Auteur ; Catherine Barlow, Auteur ; Richard M. Francksen, Auteur ; Damian Bubb, Auteur ; Staffan Roos, Auteur ; Nicholas J. Aebischer, Auteur ; David Baines, AuteurCapsule: Diversionary feeding reduced Hen Harrier Circus cyaneus nestlings’ natural food intake by half. Red Grouse Lagopus lagopus scotica chicks constituted 0–4% of all nestling food items. Annually, this reduced annual grouse chick production[...]
Article
Richard M. Francksen, Auteur ; Mark J. Whittingham, Auteur ; Sonja C. Ludwig, Auteur ; Staffan Roos, Auteur ; David Baines, AuteurPredators will often respond to reductions in preferred prey by switching to alternative prey resources. However, this may not apply to all alternative prey groups in patchy landscapes. We investigated the demographic and aggregative numerical a[...]
Article
Richard M. Francksen, Auteur ; Mark J. Whittingham, Auteur ; Sonja C. Ludwig, Auteur ; David Baines, AuteurCapsule: The winter diet of Common Buzzards Buteo buteo on a Red Grouse Lagopus lagopus scotica moor was dominated by small mammals, whilst grouse were a minor prey item.Aims: To assess winter diet of Common Buzzards from pellets collected at ro[...]
Article
Didone Frigerio, Auteur ; Lara Cibulski, Auteur ; Sonja C. Ludwig, Auteur ; Irene Campderrich, Auteur ; Kurt Kotrschal, Auteur ; Claudia A. F. Wascher, AuteurIndividual reproductive success largely depends on the ability to optimize behaviour, immune function and the physiological stress response. We have investigated correlations between behaviour, faecal steroid metabolites, immune parameters, para[...]
Article
Sonja C. Ludwig, Auteur
Article
Sonja C. Ludwig, Auteur ; Peter H. Becker, AuteurMating between close relatives can have deleterious effects on reproductive success or offspring fitness, which should favour the evolution of active or passive inbreeding avoidance mechanisms. In birds, evidence for active inbreeding avoidance [...]
Article
Innes M. W. Sim, Auteur ; Sonja C. Ludwig, Auteur ; Murray C. Grant, Auteur ; Joanna L. Loughrey, Auteur ; Graham W. Rebecca, Auteur ; Steve Redpath, AuteurRecent studies indicate that variation in juvenile survival may be particularly important in driving avian population dynamics. The quality of habitats available to inexperienced juveniles of migrant species is critical to their survival because[...]
Article
Sonja C. Ludwig, Auteur ; Peter H. Becker, AuteurDivorce between seasons is a common phenomenon in seabirds, whereas within-season mate change is rarely observed. We report four cases of within-season mate change in renesting Common Terns Sterna hirundo during a year of heavy predation by a Lo[...]
