• Biogeographical patterns of endemic terrestrial Afrotropical birds 

      De Klerk, Helen Margaret; Crowe, T. M.; Fjeldsa, J.; Burgess, N. D. (Wiley-Blackwell, 2002)
      Biogeographical zones are described for terrestrial bird species endemic to the Afrotropics using up-to-date distributional data and multivariate statistical techniques. This provides an objective basis for a hierarchy ...
    • Gaps in the protected area network for threatened Afrotropical birds 

      De Klerk, Helen Margaret; Fjeldsa, J.; Blyth, S.; Burgess, N. D. (Elsevier, 2004)
      Protected areas established for wildlife conservation (IUCN category I–VI protected areas) or for forest and watershed conservation (forest reserves) across mainland sub-Saharan Africa have high biodiversity values. However, ...