| Species
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Shapefile
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GeoJSON
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Year
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Description
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Source
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| African great apes excluding bonobos and Grauer's gorillas
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Predicted African great ape density distribution shapefile (ZIP; 568 KB)
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Predicted African great ape density distribution geojson(Geojson; 2.55 MB)
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2015
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The layer is the first attempt to model continent-wide great ape density distribution from site-level estimates of African great ape abundance. Populations in Central African Republic, Democratic Republic of the Congo, Liberia, and South Sudan are excluded due to excessively high estimates.
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Ordaz-Németh, I., Sop, T., Amarasekaran, B., Bachmann, M., Boesch, C., Brncic, T., ... & Kühl, H. S. (2021). Range‐wide indicators of African great ape density distribution. American journal of primatology, 83(12), e23338.
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| All African great apes
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African great ape abundance per site shapefile (ZIP; 9.68 MB)
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African great ape abundance per site geojson(Geojson; 37.7 MB)
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Compilation of all polygons from all sites where great apes population abundance was estimated.
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IUCN SSC APES Database 2020
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| Western chimpanzees
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Western chimpanzee density distribution (Tif; 3.33 MB)
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2015
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Range-wide predictions of chimpanzee density based on density distribution model.
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Heinicke, S., Mundry, R., Boesch, C., Amarasekaran, B., Barrie, A., Brncic, T., ... & Kühl, H. S. (2019). Advancing conservation planning for western chimpanzees using IUCN SSC APES—the case of a taxon-specific database. Environmental Research Letters, 14(6), 064001.
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| All African great apes
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SEC for great apes tif - original (Tif; 1,020 KB)
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2000s
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Predicted distribution of suitable environmental conditions (SEC) for eight African great ape taxa for the 2000s.
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Junker, J., Blake, S., Boesch, C., Campbell, G., Toit, L. D., Duvall, C., ... & Kuehl, H. S. (2012). Recent decline in suitable environmental conditions for A frican great apes. Diversity and Distributions, 18(11), 1077-1091.
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| Grauer's gorillas and eastern chimpanzees
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Grauer's gorilla occupancy probability (Tif; 171 KB)
Eastern chimpanzee occupancy probability (Tif; 170 KB)
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2015
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Occupancy probability models for the Grauer's gorillas and eastern chimpanzees in DRC.
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Plumptre, A. J., Nixon, S., Kujirakwinja, D. K., Vieilledent, G., Critchlow, R., Williamson, E. A., ... & Hall, J. S. (2016). Catastrophic decline of world's largest primate: 80% loss of Grauer's Gorilla (Gorilla beringei graueri) population justifies critically endangered status. PloS one, 11(10), e0162697.
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| Western chimpanzees
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Western chimpanzee density in Liberia (Tif; 505 KB)
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2012
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Predicted density distribution of chimpanzees in Liberia.
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Tweh, C. G., Lormie, M. M., Kouakou, C. Y., Hillers, A., Kühl, H. S., & Junker, J. (2015). Conservation status of chimpanzees Pan troglodytes verus and other large mammals in Liberia: a nationwide survey. Oryx, 49(4), 710-718.
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| Central chimpanzees and western lowland gorillas
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2013
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Using great ape data from 59 sites in five countries surveyed between 2003 and 2013, these layers predict central chimpanzee and western lowlang gorilla densities across each taxon’s geographic range.
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Strindberg, S., Maisels, F., Williamson, E. A., Blake, S., Stokes, E. J., Aba’a, R., ... & Wilkie, D. S. (2018). Guns, germs, and trees determine density and distribution of gorillas and chimpanzees in Western Equatorial Africa. Science advances, 4(4), eaar2964.
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