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Auteur Jeff A. Johnson |
Documents disponibles écrits par cet auteur (5)
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Article
Zachary W. Bateson, Auteur ; Peter O. Dunn, Auteur ; Scott D. Hull, Auteur ; Amberleigh E. Henschen, Auteur ; Jeff A. Johnson, Auteur ; Linda A. Whittingham, AuteurSupplemental translocations to small, isolated populations can be a valuable strategy to counteract the effects of genetic drift by increasing genetic diversity. We studied the genetic consequences of a translocation of greater prairie-chickens [...]![]()
Article
Jerome Fuchs, Auteur ; Jeff A. Johnson, Auteur ; David P. Mindell, AuteurThe Polyborinae is the most diverse subfamily of the Falconidae in terms of both morphology and behaviour, and includes falconet-shaped birds (Spiziapteryx), arboreal omnivores (Daptrius, Ibycter), as well as terrestrial generalists and scavenge[...]![]()
Article
Jeff A. Johnson, Auteur ; Martin Gilbert, Auteur ; Munir Z. Virani, Auteur ; Muhammad Asim, Auteur ; David P. Mindell, AuteurPopulations of oriental white-backed vultures (Gyps bengalensis) in south Asia have declined over 95% since the mid-1990s due to feeding on livestock carcasses that had been treated with diclofenac, an anti-inflammatory pharmaceutical that is fa[...]![]()
Article
Timing of breeding and offspring number covary with plumage colour among Gyrfalcons Falco rusticolus
Jeff A. Johnson, Auteur ; Kurt K. Burnham, AuteurPlumage colour variation exists among Gyrfalcons throughout their Arctic and sub-Arctic circumpolar distribution, ranging from white through silver and grey to almost black. Although different colour variants coexist within many populations, a f[...]![]()
Article
Martin Gilbert, Auteur ; Richard T. Watson, Auteur ; Shakeel Ahmed, Auteur ; Muhammad Asim, Auteur ; Jeff A. Johnson, AuteurThe provision of supplementary food at vulture restaurants is a well-established tool in the conservation of vulture species. Among their many applications, vulture restaurants are used to provide a safe food source in areas where carcasses are [...]



