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dc.contributor.authorPomeroy, Derek
dc.contributor.authorKibuule, Micheal
dc.contributor.authorNalwanga, Dianah
dc.contributor.authorKaphu, George
dc.contributor.authorOpige, Michael
dc.contributor.authorShaw, Philip
dc.identifier.citationPomeroy , D , Kibuule , M , Nalwanga , D , Kaphu , G , Opige , M & Shaw , P 2019 , ' Densities and population sizes of raptors in Uganda’s conservation areas ' , Ostrich , vol. 90 , no. 1 , pp. 25-36 .
dc.identifier.otherPURE: 255748610
dc.identifier.otherPURE UUID: 6c458f9e-0a28-45bb-9547-86aa5d5cfa20
dc.identifier.otherScopus: 85060180204
dc.identifier.otherWOS: 000461589300005
dc.identifier.otherORCID: /0000-0002-8183-0289/work/143336060
dc.description.abstractProjected increases in Africa’s human population over the next 40 years point to further, large-scale conversion of natural habitats into farmland, with far-reaching consequences for raptor species, some of which are now largely restricted to protected areas (PAs). To assess the importance of PAs for raptors in Uganda, we conducted an annual road survey through savanna, pastoral and agricultural land during 2008–2015. Here, we present density estimates for 34 diurnal raptor species, 18 of which were encountered largely or entirely within PAs. These included seven out of eight globally threatened or near-threatened species surveyed. Based mainly on published demographic values, we converted density estimates (birds 100 km-2) to numbers of adult pairs, for 11 resident, savanna-dependent species. We then estimated adult population sizes within conservation areas (individual PAs and clusters of contiguous PAs), based on the area of savanna in each site. This suggested that two threatened residents, Martial Eagle Polemaetus bellicosus and Lappet-faced Vulture Torgos tracheliotos, have national breeding populations of just 90–120 pairs. A third, White-headed Vulture Trigonoceps occipitalis, may have a breeding population of just 22–32 pairs. In each case, at least 90% of pairs are thought to reside within Uganda’s five largest conservation areas. In three cases our estimates of pair density were markedly lower than in other studies, while in six cases they were broadly consistent with published findings, derived from more intensive survey methods. Further work is required to determine the accuracy of our estimates for individual conservation areas, and to assess the long-term viability of Uganda’s threatened raptor populations.
dc.rights© 2019, NISC (Pty) Ltd. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at
dc.subjectAfrican raptorsen
dc.subjectRaptor abundanceen
dc.subjectProtected areasen
dc.subjectQH301 Biologyen
dc.subjectSDG 15 - Life on Landen
dc.titleDensities and population sizes of raptors in Uganda’s conservation areasen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.description.statusPeer revieweden

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