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• W2299214689 abstract "Abstract The White‐headed Vulture Trigonoceps occipitalis (WhV) is uncommon and largely restricted to protected areas across its range in sub‐Saharan Africa. We used the World Database on Protected Areas to identify protected areas ( PA s) likely to contain White‐headed Vultures. Vulture occurrence on road transects in Southern, East, and West Africa was adjusted to nests per km 2 using data from areas with known numbers of nests and corresponding road transect data. Nest density was used to calculate the number of WhV nests within identified PA s and from there extrapolated to estimate the global population. Across a fragmented range, 400 PA s are estimated to contain 1893 WhV nests. Eastern Africa is estimated to contain 721 nests, Central Africa 548 nests, Southern Africa 468 nests, and West Africa 156 nests. Including immature and nonbreeding birds, and accounting for data deficient PA s, the estimated global population is 5475 ‐ 5493 birds. The identified distribution highlights are alarming: over 78% ( n = 313) of identified PA s contain fewer than five nests. A further 17% ( n = 68) of PA s contain 5 ‐ 20 nests and 4% ( n = 14) of identified PAs are estimated to contain >20 nests. Just 1% ( n = 5) of PA s are estimated to contain >40 nests; none is located in West Africa. Whilst ranging behavior of WhVs is currently unknown, 35% of PA s large enough to hold >20 nests are isolated by more than 100 km from other PA s. Spatially discrete and unpredictable mortality events such as poisoning pose major threats to small localized vulture populations and will accelerate ongoing local extinctions. Apart from reducing the threat of poisoning events, conservation actions promoting linkages between protected areas should be pursued. Identifying potential areas for assisted re‐establishment via translocation offers the potential to expand the range of this species and alleviate risk." @default.
• W2299214689 created "2016-06-24" @default.
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• W2299214689 date "2016-01-22" @default.
• W2299214689 modified "2023-10-05" @default.
• W2299214689 title "Using Africa's protected area network to estimate the global population of a threatened and declining species: a case study of the Critically Endangered White-headed Vulture<i>Trigonoceps occipitalis</i>" @default.
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• W2299214689 doi "https://doi.org/10.1002/ece3.1931" @default.
• W2299214689 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4761783" @default.
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