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Article

Priority areas for vulture conservation in the Horn of Africa largely fall outside the protected area network

Evan R. Buechley, Auteur ; Marco Girardello, Auteur ; Andrea Santangeli, Auteur ; Alazar Daka Ruffo, Auteur ; Girma Ayalew, Auteur ; Yilma D. Abebe, Auteur ; David R. Barber, Auteur ; Ralph Buij, Auteur ; Keith Bildstein, Auteur ; Bruktawit Abdu Mahamued, Auteur ; Montague H. C. Neate-Clegg, Auteur ; Darcy Ogada, Auteur ; Peter P. Marra, Auteur ; T. Scott Sillett, Auteur ; Jean-Marc Thiollay, Auteur ; Martin Wikelski, Auteur ; Peter Yaworsky, Auteur ; Çagan H. Sekercioglu, Auteur

Dans Bird Conservation International (32(2) June, 2022)

Vulture populations are in severe decline across Africa and prioritization of geographic areas for their conservation is urgently needed. To do so, we compiled three independent datasets on vulture occurrence from road-surveys, GPS-tracking, and[...]

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Article

Balancing ecosystem function, services and disservices resulting from expanding goose populations

Ralph Buij, Auteur ; Theodorus C. P. Melman, Auteur ; Maarten J. J. E. Loonen, Auteur ; Anthony D. Fox, Auteur

Dans AMBIO (46(sup. 2) 2017/03/01)

As goose populations increase in abundance, their influence on ecological processes is increasing. We review the evidence for key ecological functions of wild goose populations in Eurasia and North America, including aquatic invertebrate and pla[...]

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Article

Response to habitat modification by foraging Dark-chanting Goshawks Melierax metabates in a West African savanna

Ralph Buij, Auteur ; Nikie Van Dorst, Auteur ; Henriette F. Salomons, Auteur ; Barbara M. Croes, Auteur ; Maurine W. Dietz, Auteur ; Jan Komdeur, Auteur

Dans Bird Conservation International (25(3) SEP 2015)

Anthropogenic habitat alteration has probably contributed significantly to the decrease of raptor populations in West African savannas. To evaluate the impact of habitat degradation on foraging by sedentary Afrotropical raptors, we investigated [...]

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Article

Effects of land-use change and rainfall in Sudano-Sahelian West Africa on the diet and nestling growth rates of an avian predator

Ralph Buij, Auteur ; Ingrid Folkertsma, Auteur ; Kim Kortekaas, Auteur ; Hans H. De Iongh, Auteur ; Jan Komdeur, Auteur

Dans Ibis (155(1) JAN 2013)

Raptor populations in Sudano-Sahelian West Africa are being severely affected by widespread habitat alteration which depletes prey populations, potentially aggravated by changing rainfall patterns. We studied Grasshopper Buzzards Butastur rufipe[...]

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Article

Interspecific and intraspecific differences in habitat use and their conservation implications for Palaearctic harriers on Sahelian wintering grounds

Ralph Buij, Auteur ; Dirk Van der Goes, Auteur ; Hans H. De Iongh, Auteur ; Sama Gagare, Auteur ; Patsy Haccou, Auteur ; Jan Komdeur, Auteur ; Geert De Snoo, Auteur

Dans Ibis (154(1) JAN 2012)

The floodplains of the West-African Sahel region have experienced extensive habitat transformation during the past four decades, coinciding with an impoverishment of raptor populations. We investigated foraging patterns of Palaearctic migratory [...]

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Article

Patch-occupancy models indicate human activity as major determinant of forest elephant Loxodonta cyclotis seasonal distribution in an industrial corridor in Gabon

Ralph Buij, Auteur ; William J. McShea, Auteur ; Patrick Campbell, Auteur ; Michelle E. Lee, Auteur ; Francisco Dallmeier, Auteur ; Sylvain Guimondou, Auteur ; Loic Mackaga, Auteur ; Nicaise Guisseougou, Auteur ; Serge Mboumba, Auteur ; James E. Hines, Auteur ; James D. Nichols, Auteur ; Alfonso Alonso, Auteur

Dans Biological Conservation (135(2) MAR 2007)

The importance of human activity and ecological features in influencing African forest elephant ranging behaviour was investigated in the Rabi-Ndogo corridor of the Gamba Complex of Protected Areas in southwest Gabon. Locations in a wide geograp[...]

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Article

Raptor habitat use in the Lake Chad Basin: insights into the effect of flood-plain transformation on Afrotropical and Palearctic raptors

Ralph Buij, Auteur ; Barbara M. Croes, Auteur

Dans Bird Conservation International (23(2) JUN 2013)

West African flood-plains have undergone major land-use transformations in the second half of the 20th century. To obtain insight in the effect of flood-plain development for irrigated rice cultivation on the abundance, richness, and diversity o[...]

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Article

The role of breeding range, diet, mobility and body size in associations of raptor communities and land-use in a West African savanna

Ralph Buij, Auteur ; Barbara M. Croes, Auteur ; Gerrit Gort, Auteur ; Jan Komdeur, Auteur

Dans Biological Conservation (166 OCT 2013)

To provide insight into raptor declines in western Africa, we investigated associations between land-use and raptor distribution patterns in Cameroon. We examined the role of breeding distribution, species' migratory mobility, diet, body size, a[...]

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