Within a review paper I am co authoring, I digitized the biogeographical regionalization results of Linder, H.P., de Klerk, H.M., Born, J., Burgess, N.D., Fjeldså, J., & Rahbek, C. (2012) The partitioning of Africa: statistically defined biogeographical regions in sub-Saharan Africa. Journal of Biogeography, 39, 1189–1372.
This paper uses extensive distribution data from vertebrates (birds, mammals, amphibians and snakes) and plants to generate common bioregions across tropical Africa. In total seven distinct bioregions are statistically identified, five of which are further subdivided into 15 subregions. I make the resulting shape file available for free of use, under the condition that the original work is properly cited (see citation above). This file was generated using QGIS.
Below you have a view of the result with subregions indicated.
Shape file available here compressed into a zip file (8 kb).
Thomas Couvreur, researcher in tropical biodiversity evolution