Environmental and anthropogenic determinants of vegetation distribution across Africa

Global Ecology and Biogeography

Volumn 20, Issue 5, 2011, Pages 661-674

  Greve, Michelle ^a   Lykke, Anne Mette ^a   Blach Overgaard, Anne ^a   Svenning, Jens Christian ^a  

^a AARHUS UNIVERSITY   (Denmark)

Author keywords

Africa; Climate; Continental scale; Distribution modelling; Human influence; Precipitation; Vegetation distribution

Indexed keywords

DESERT; ENVIRONMENTAL FACTOR; EVERGREEN FOREST; LAND COVER; NUMERICAL MODEL; REGRESSION ANALYSIS; REMOTE SENSING; VEGETATION; VEGETATION COVER;

AFRICA;

EID: 79961178186     PISSN: 1466822X     EISSN: 14668238     Source Type: Journal    
DOI: 10.1111/j.1466-8238.2011.00666.x     Document Type: Article

References (87)

1. Adams, J. (2007) Vegetation-climate interaction. How vegetation makes the global environment. Springer, Berlin.
2. Alessa, L. & Chapin, F.S., III (2008) Anthropogenic biomes: a key contribution to earth-system science. Trends in Ecology and Evolution, 23, 529-531.
3. Anderson, D.J. (1971) Pattern in desert perennials. Journal of Ecology, 59, 555-560.
4. Balmford, A., Moore, J.L., Brooks, T., Burgess, N., Hansen, L.A., Williams, P. & Rahbek, C. (2001) Conservation conflicts across Africa. Science, 291, 2616-2619.
5. Bond, W.J. (1994) Do mutualisms matter? Assessing the impact of pollinator and disperser disruption on plant extinction. Philosophical Transactions of the Royal Society B: Biological Sciences, 344, 83-90.
6. Bond, W.J. (2008) What limits trees in C4 grasslands and savannas? Annual Review of Ecology, Evolution, and Systematics, 39, 641-659.
7. Bond, W.J., Midgley, G.F. & Woodward, F.I. (2003) What controls South African vegetation - climate or fire? South African Journal of Botany, 69, 79-91.
8. Bradshaw, C.J.A., Sodhi, N.S. & Brook, B.W. (2009) Tropical turmoil: a biodiversity tragedy in progress. Frontiers in Ecology and the Environment, 7, 79-87.
9. Breckle, S.-W. (2002) Walter's vegetation of the earth, 4th edn. Springer-Verlag, Heidelberg.
10. Brink, A.B. & Eva, H.D. (2009) Monitoring 25 years of land cover change dynamics in Africa: a sample based remote sensing approach. Applied Geography, 29, 501-512.
11. Brncic, T.M., Willis, K.J., Harris, D.J. & Washington, R. (2007) Culture or climate? The relative influences of past processes on the composition of the lowland Congo rainforest. Philosophical Transactions of the Royal Society B: Biological Sciences, 362, 229-242.
12. Bucini, G. & Hanan, N.P. (2007) A continental-scale analysis of tree cover in African savannas. Global Ecology and Biogeography, 16, 593-605.
13. Burnham, K.P. & Anderson, D.R. (1998) Model selection and multimodel inference, 2nd edn. Springer-Verlag, New York.
14. Cabral, A.I.R., Vasconcelos, M.J.P., Pereira, J.M.C., Martins, E. & Bartholomé, E. (2006) A land cover map of Southern Hemisphere Africa based on SPOT-4 vegetation data. International Journal of Remote Sensing, 27, 1053-1074.
15. Carrascal, L.M., Galván, I. & Gordo, O. (2009) Partial least squares regression as an alternative to current regression methods used in ecology. Oikos, 118, 681-690.
16. Center for International Earth Science Information Network (CIESIN) at Columbia University, United Nations Food and Agriculture Programme (FAO) & Centro Internacional de Agricultura Tropical (CIAT) (2005) Gridded population of the world: future estimates (GPWFE). Available at: (accessed 3 September 2008)
17. Cohen, J. (1960) A coefficient of agreement for nominal scales. Educational and Psychological Measurement, 20, 37-46.
18. Cotula, L., Vermeulen, S., Leonard, R. & Keeley, J. (2009) Land grab or development opportunity? Agricultural investment and international land deals in Africa. IIED/FAO/IFAD, London/Rome.
19. De'ath, G. (2007) Boosted trees for ecological modeling and prediction. Ecology, 88, 243-251.
20. De'ath, G. & Fabricius, K.E. (2000) Classification and regression trees: a powerful yet simple technique for ecological data analysis. Ecology, 81, 3178-3192.
21. Earth Resources Observation and Science (1996) HYDRO1k elevation derivative database. Available at: (accessed 6 October 2008).
22. Elith, J. & Graham, C.H. (2009) Do they? How do they? WHY do they differ? On finding reasons for differing performances of species distribution models. Ecography, 32, 66-77.
23. Elith, J., Graham, C.H., Anderson, R.P. etal. (2006) Novel methods improve prediction of species' distributions from occurrence data. Ecography, 29, 129-151.
24. Elith, J., Leathwick, J.R. & Hastie, T. (2008) A working guide to boosted regression trees. Journal of Animal Ecology, 77, 802-813.
25. Ellis, E.C. & Ramankutty, N. (2008) Putting people in the map: anthropogenic biomes of the world. Frontiers in Ecology and the Environment, 6, 439-447.
26. Fischer, G., Nachtergaele, F., Prieler, S., van Velthuizen, H.T., Verelst, L. & Wiberg, D. (2008) Global agro-ecological zones assessment for agriculture (GAEZ 2008). IIASA, Laxenburg and FAO, Rome. Available at: (accessed 10 October 2008).
27. Gavilán, R.G. (2005) The use of climatic parameters and indices in vegetation distribution. A case study in the Spanish Sistema Central. International Journal of Biometeorology, 50, 111-120.
28. Hamilton, A.C. (1982) Environmental history of East Africa, 1st edn. Academic Press, London.
29. Hanley, J.A. & McNeil, B.J. (1982) The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology, 143, 29-36.
30. Heikkinen, R.K., Luoto, M., Virkkala, R. & Rainio, K. (2004) Effects of habitat cover, landscape structure and spatial variables on the abundance of birds in an agricultural-forest mosaic. Journal of Applied Ecology, 41, 824-835.
31. Hély, C., Bremond, L., Alleaume, S., Smith, B., Sykes, M.T. & Guiot, J. (2006) Sensitivity of African biomes to changes in the precipitation regime. Global Ecology and Biogeography, 15, 258-270.
32. Higgins, S.I., Bond, W.J. & Trollope, W.S.W. (2000) Fire, resprouting and variability: a recipe for grass-tree coexistence in savanna. Journal of Ecology, 88, 213-229.
33. Hijmans, R.J., Cameron, S.E., Parra, J.L., Jones, P.G. & Jarvis, A. (2005) Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology, 25, 1965-1978.
34. Hilbert, D.W. & Ostendorf, B. (2001) The utility of artificial neural networks for modelling the distribution of vegetation in past, present and future climates. Ecological Modelling, 146, 311-327.
35. Holdo, R.M., Sinclair, A.R.E., Dobson, A.P., Metzger, K.L., Bolker, B.M., Ritchie, M.E. & Holt, R.D. (2009) A disease-mediated trophic cascade in the Serengeti and its implications for ecosystem C. PLoS Biology, 7, e1000210.
36. Holdridge, L.R. (1967) Life zone ecology, 1st edn. Tropical Science Center, San Jose, CA.
37. Jackman, S. (2008) pscl: classes and methods for R developed in the Political Science Computational Laboratory. Stanford University, Stanford. Available at: (accessed 21 October 2009).
38. Jeltsch, F., Milton, S.J., Dean, W.R.J. & van Rooyen, N. (1997) Analysing shrub encroachment in the southern Kalahari: a grid-based modelling approach. Journal of Applied Ecology, 34, 1497-1508.
39. Kiage, L.M. & Liu, K. (2009) Palynological evidence of climate change and land degradation in the Lake Baringo area, Kenya, East Africa, since AD 1650. Palaeogeography, Palaeoclimatology, Palaeoecology, 279, 60-72.
40. Klein Goldewijk, K., Beusen, A. & Janssen, P. (2010) Long-term dynamic modeling of global population and built-up area in a spatially explicit way: HYDE 3.1. The Holocene, 20, 565-573.
41. Lal, R. (2007) Anthropogenic influences on world soils and implications to global food security. Advances in Agronomy, 93, 69-93.
42. Lamprey, R.H. & Reid, R.S. (2004) Expansion of human settlement in Kenya's Maasai Mara: what future for pastoralism and wildlife? Journal of Biogeography, 31, 997-1032.
43. Landis, J.R. & Koch, G.G. (1977) Measurement of observer agreement for categorical data. Biometrics, 33, 159-174.
44. Laris, P. & Wardell, D.A. (2006) Good, bad or 'necessary evil'? Reinterpreting the colonial burning experiments in the savanna landscapes of West Africa. Geographical Journal, 172, 271-290.
45. Lawson, G.W. (1986) Vegetation and environment in West Africa. Plant ecology in West Africa (ed. by G.W. Lawson), pp. 1-11. John Wiley and Sons, Chichester.
46. Leathwick, J.R., Elith, J., Chadderton, W.L., Rowe, D. & Hastie, T. (2008) Dispersal, disturbance and the contrasting biogeographies of New Zealand's diadromous and non-diadromous fish species. Journal of Biogeography, 35, 1481-1497.
47. Legendre, L. & Legendre, P. (1998) Numerical ecology, 2nd edn. Elsevier, Amsterdam.
48. Liu, C., Berry, P.M., Dawson, T.P. & Pearson, R.G. (2005) Selecting thresholds of occurrence in the prediction of species distributions. Ecography, 28, 385-393.
49. Lobo, J.M., Jiménez-Valverde, A. & Real, R. (2008) AUC: a misleading measure of the performance of predictive distribution models. Global Ecology and Biogeography, 17, 145-151.
50. Mayaux, P., Bartholomé, E., Fritz, S. & Belward, A. (2004) A new land-cover map of Africa for the year 2000. Journal of Biogeography, 31, 861-877.
51. Menard, S. (2000) Coefficients of determination for multiple logistic regression analysis. American Statistician, 54, 17-24.
52. Meyer, D., Zeileis, A. & Hornik, K. (2009) Package 'vcd'- visualizing categorical data. Available at: (accessed 1 September 2009).
53. Mitchard, E.T.A., Saatchi, S.S., Gerard, F.F., Lewis, S.L. & Meir, P. (2009) Measuring woody encroachment along a forest-savanna boundary in Central Africa. Earth Interactions, 13, 1-29.
54. Nachtergaele, F. (2007) pH - subsoil. Available at: (accessed 10 November 2008).
55. Nyssen, J., Poesen, J., Moeyersons, J., Deckers, J., Haile, M. & Lang, A. (2004) Human impact on the environment in the Ethiopian and Eritrean highlands - a state of the art. Earth-Science Reviews, 64, 273-320.
56. Økland, R.H. (1999) On the variation explained by ordination and constrained ordination axes. Journal of Vegetation Science, 10, 131-136.
57. Platts, P.J., McClean, C.J., Lovett, J.C. & Marchant, R. (2008) Predicting tree distributions in an East African biodiversity hotspot: model selection, data bias and envelope uncertainty. Ecological Modelling, 218, 121-134.
58. R Development Core Team (2008) R: a language and environment for statistical computing, version 2.8.1. R Foundation for Statistical Computing, Vienna.
59. Ridgeway, G. (2007) Generalized boosted models: a guide to the gbm package. Available at: (accessed 10 July 2009).
60. Roques, K.G., O'Connor, T.G. & Watkinson, A.R. (2001) Dynamics of shrub encroachment in an African savanna: relative influences of fire, herbivory, rainfall and density dependence. Journal of Applied Ecology, 38, 268-280.
61. Sala, O.E., Chapin, F.S., III, Armesto, J.J., Berlow, E., Bloomfield, J., Dirzo, R., Huber-Sanwald, E., Huenneke, L.F., Jackson, R.B., Kinzig, A., Leemans, R., Lodge, D.M., Mooney, H.A., Oesterheld, M., Poff, N.L., Sykes, M.T., Walker, B.H., Walker, M. & Wall, D.H. (2000) Global biodiversity scenarios for the year 2100. Science, 287, 1770-1774.
62. Sanderson, E.W., Jaiteh, M., Levy, M.A., Redford, K.H., Wannebo, A.V. & Woolmer, G. (2002) The human footprint and the last of the wild. BioScience, 52, 891-904.
63. Sankaran, M., Hanan, N.P., Scholes, R.J. etal. (2005) Determinants of woody cover in African savannas. Nature, 438, 846-849.
64. Sankaran, M., Ratnam, J. & Hanan, N. (2008) Woody cover in African savannas: the role of resources, fire and herbivory. Global Ecology and Biogeography, 17, 236-245.
65. Scheiter, S. & Higgins, S.I. (2009) Impacts of climate change on the vegetation of Africa: an adaptive dynamic vegetation modelling approach. Global Change Biology, 15, 2224-2246.
66. Scholes, R.J. & Archer, S.R. (1997) Tree-grass interactions in savannas. Annual Review of Ecology and Systematics, 28, 517-544.
67. Serneels, S., Said, M.Y. & Lambin, E.F. (2001) Land cover changes around a major east African wildlife reserve: the Mara Ecosystem (Kenya). International Journal of Remote Sensing, 22, 3397-3420.
68. Sing, T., Sander, O., Beerenwinkel, N. & Lengauer, T. (2005) ROCR: visualizing classifier performance in R. Bioinformatics, 21, 3940-3941.
69. Smit, I.P.J., Asner, G.P., Govender, N., Kennedy-Bowdoin, T., Knapp, D.E. & Jacobson, J. (2010) Effects of fire on woody vegetation structure in African savanna. Ecological Applications, 20, 1865-1875.
70. Sowunmi, M.A. (1986) Change of vegetation with time. Plant ecology in West Africa (ed. by G.W. Lawson), pp. 273-307. John Wiley and Sons, Chichester.
71. Stephenson, N.L. (1990) Climatic control of vegetation distribution: the role of the water balance. The American Naturalist, 135, 649-670.
72. Taiz, L. & Zeiger, E. (2002) Plant physiology, 3rd edn. Sinauer Associates, Sunderland, MA.
73. Tang, G.P. & Bartlein, P.J. (2008) Simulating the climatic effects on vegetation: approaches, issues and challenges. Progress in Physical Geography, 32, 543-556.
74. Tansey, K., Grégoire, J.M., Defourny, P., Leigh, R., Pekel, J.-F., van Bogaert, E. & Bartholomé, E. (2008) A new, global, multi-annual (2000-2007) burnt area product at 1 km resolution. Geophysical Research Letters, 35, L01401.
75. Vancutsem, C., Pekel, J.-F., Evrard, C., Malaisse, F. & Defourny, P. (2009) Mapping and characterizing the vegetation types of the Democratic Republic of Congo using SPOT VEGETATION time series. International Journal of Applied Earth Observation and Geoinformation, 11, 62-76.
76. Venables, W.N. & Ripley, B.D. (2002) Modern applied statistics with S, 4th edn. Springer, New York.
77. Walter, H., Harnickel, E. & Müeller-Dombois, D. (1975) Klimadiagramm-Karten der einzelnen Kontinente und die ökologische Klimagliederung der Erde. Gustav Fischer Verlag, Stuttgart.
78. Wezel, A. (2005) Decline of woody species in the Sahel. African biodiversity. Molecules, organisms, ecosystems (ed. by B.A. Huber, B.J. Sinclair and K.-H. Lampe), pp. 415-421. Springer, Amsterdam.
79. White, F. (1983) The vegetation of Africa. A descriptive memoir to accompany the UNESCO/AETFAT/UNSO vegetation map of Africa. Natural Resources Research, 20, 1-356.
80. White, L.J.T. & Oates, J.F. (1999) New data on the history of the plateau forest of Okomu, southern Nigeria: an insight into how human disturbance has shaped the African rain forest. Global Ecology and Biogeography, 8, 355-361.
81. Wisz, M.S. & Guisan, A. (2009) Do pseudo-absence selection strategies influence species distribution models and their predictions? An information-theoretic approach based on simulated data. BMC Ecology, 9, art. no. 8.
82. Wittig, R., König, K., Schmidt, M. & Szarzynski, J. (2007) A study of climate change and anthropogenic impacts in West Africa. Environmental Science and Pollution Research, 14, 182-189.
83. Woodward, F.I., Lomas, M.R. & Kelly, C.K. (2004) Global climate and the distribution of plant biomes. Philosophical Transactions of the Royal Society B: Biological Sciences, 359, 1465-1476.
84. Xie, Y.C., Sha, Z.Y. & Yu, M. (2008) Remote sensing imagery in vegetation mapping: a review. Journal of Plant Ecology, 1, 9-23.
85. Zeileis, A. & Hothorn, T. (2002) Diagnostic checking in regression relationships. R News, 2, 7-10.
86. Zhang, J.-T., Ru, W.M. & Li, B. (2006) Relationships between vegetation and climate on the Loess Plateau in China. Folia Geobotanica, 41, 151-163.
87. Zuur, A.F., Ieno, E.N., Walker, N.J., Saveliev, A.A. & Smith, G.M. (2009) Mixed effects models and extensions in ecology with R. Springer Science and Business Media, New York.