The evolution of African plant diversity

Frontiers in Ecology and Evolution

Volumn 2, Issue JUL, 2014, Pages

  Linder, H Peter ^a  

^a UNIVERSITY OF ZURICH   (Switzerland)

Author keywords

Africa; Biogeography; Cenozoic; Diversification rates; Extinction; Fire; Floras; Savanna

Indexed keywords

EID: 85042861214     PISSN: None     EISSN: 2296701X     Source Type: Journal    
DOI: 10.3389/fevo.2014.00038     Document Type: Article

References (141)

1. Assefa, A., Ehrich, D., Taberlet, P., Nemomissa, S., and Brochmann, C. (2007). Pleistocene colonization of afro-alpine 'sky islands' by the arctic-alpine Arabis alpina. Heredity (Edinb). 99, 133-142. doi: 10.1038/sj.hdy.6800974
2. Bakker, F. T., Hellbrügge, D., Culham, A., and Gibby, M. (1998). Phylogenetic relationships within Pelargonium sect. Peristera (Geraniaceae), inferred from nrDNA and cpDNA sequence comparisons. Plant Syst. Evol. 211, 273-287. doi: 10.1007/BF00985364
3. Baum, D. A., Small, R. L., and Wendel, J. F. (1998). Biogeography and floral evolution of baobabs (Adansonia, Bombaceae) as inferred from multiple data sets. Syst. Biol. 47, 181-207. doi: 10.1080/106351598260879
4. Beerling, D. J., and Osborne, C. P. (2006). The origin of the savanna biome. Glob. Chang. Biol. 12, 2023-2031. doi: 10.1111/j.1365-2486.2006.01239.x
5. Bellstedt, D. U., Galley, C., Pirie, M. D., and Linder, H. P. (2012). The migration of the palaeotropical arid flora: Zygophylloideae as an example. Syst. Bot. 37, 951-959. doi: 10.1600/036364412x656608
6. Bentley, J., Verboom, G. A., and Bergh, N. G. (2014). Erosive processes after tectonic uplift stimulate vicariant and adaptive speciation: evolution in an Afrotemperate-endemic paper daisy genus. BMC Evol. Biol. 14:27. doi: 10.1186/1471-2148-14-27
7. Bergh, N. G., and Linder, H. P. (2009). Cape diversification and repeated out-of-southern-Africa dispersal in paper daisies (Asteraceae-Gnaphalieae). Mol. Phylogenet. Evol. 51, 5-18. doi: 10.1016/j.ympev.2008.09.001
8. Bolus, H. (1886). Sketch of the Flora of South Africa. Cape Town: Richards and Sons
9. Bond, W. J., Midgley, G. F., and Woodward, F. I. (2003). The importance of low atmospheric CO2 and fire in promoting the spread of grasslands and savannas. Glob. Chang. Biol. 9, 973-982. doi: 10.1046/j.1365-2486.2003.00577.x
10. Bond, W. J., Woodward, F. I., and Midgley, G. F. (2005). The global distribution of ecosystems in a world without fire. New Phytol. 165, 525-537. doi: 10.1111/j.1469-8137.2004.01252.x
11. Born, J., Linder, H. P., and Desmet, P. (2007). The greater cape floristic region. J. Biogeogr. 34, 147-162. doi: 10.1111/j.1365-2699.2006.01595.x
12. Bruyns, P. V., Klak, C., and Hanácek, P. (2014). Evolution of the stapeliads (Apocynaceae-Asclepiadoideae)-repeated major radiation across Africa in an Old World group. Mol. Phylogenet. Evol. 77, 251-263. doi: 10.1016/j.ympev.2014.03.022
13. Bruyns, P. V., Klak, C., and Hanek, P. (2011). Age and diversity in Old World succulent species of Euphorbia (Euphorbiaceae). Taxon 60, 1717-1733
14. Carbutt, C., and Edwards, T. J. (2006). The endemic and near-endemic angiosperms of the Drakensberg Alpine Centre. S. Afr. J. Bot. 72, 105-132. doi: 10.1016/j.sajb.2005.06.001
15. Carbutt, C., Edwards, T. J., Fynn, R. W. S., and Beckett, R. P. (2013). Evidence for temperature limitation of nitrogen mineralisation in the Drakensberg Alpine Centre. S. Afr. J. Bot. 88, 447-454. doi: 10.1016/j.sajb.2013.09.001
16. Chapman, J. D., and White, F. (1970). The Evergreen Forests of Malawi. Oxford: Commonwealth Forestry Institute
17. Chorowicz, J. (2005). The East African rift system. J. Afr. Earth Sci. 43, 379-410. doi: 10.1016/j.jafrearsci.2005.07.019
18. Conti, E., Eriksson, T., Schonenberger, J., Sytsma, K. J., and Baum, D. A. (2002). Early tertiary out-of-India dispersal of Crypteroniaceae: evidence from phylogeny and molecular dating. Evolution 56, 1931-1942. doi: 10.1111/j.0014-3820.2002.tb00119.x
19. Corlett, R. T., and Primack, R. B. (2011). Tropical Rain Forests: An Ecological and Biogeographical Comparison. Chichester: Wiley-Blackwell
20. Couvreur, T. L. P., Chatrou, L. W., Sosef, M. S. M., and Richardson, J. E. (2008). Molecular phylogenetics reveal multiple tertiary vicariance origins of the African rain forest trees. BMC Biol. 6:54. doi: 10.1186/1741-7007-6-54
21. Couvreur, T. L. P., Forest, F., and Baker, W. J. (2011). Origin and global diversification patterns of tropical rain forests: inferences from a complete genus-level phylogeny of palms. BMC Biol. 9:44. doi: 10.1186/1741-7007-9-44
22. Cowling, R. M., Esler, K. J., and Rundel, P. W. (1999). Namaqualand, South Africa-an overview of a unique winter-rainfall desert ecosystem. Plant Ecol. 142, 3-21. doi: 10.1023/A:1009831308074
23. Cowling, R. M., Proches, S., and Vlok, J. H. J. (2005). On the origin of the southern African subtropical thicket vegetation. S. Afr. J. Bot. 71, 1-23
24. Cox, C. B. (2001). The biogeographic regions reconsidered. J. Biogeogr. 28, 511-523. doi: 10.1046/j.1365-2699.2001.00566.x
25. Crisp, M. D., Arroyo, M. T. K., Cook, L. G., Gandolfo, M. A., Jordan, G. J., McGlone, M. S., et al. (2009). Phylogenetic biome conservatism on a global scale. Nature 458, 754-756. doi: 10.1038/nature07764
26. Davis, C. C., Bell, C. D., Fritsch, P. W., and Mathews, S. (2002). Phylogeny of Acridocarpus-Brachylophon (Malpighiaceae): implications for tertiary tropical floras and Afroasian biogeography. Evolution 56, 2395-2405. doi: 10.1111/j.0014-3820.2002.tb00165.x
27. Davis, S. D. (1995). "Regional overview: South East Asia (Malesia)". in Centres of Plant Diversity. A Guide and Strategy for Their Conservation, eds S. D. Davis, V. H. Heywood, and A. C. Hamilton (Cambridge: IUCN), 229-432
28. Denys, E. (1980). A tentatative phytogeographical division of tropical Africa based on a mathematical analysis of distribution maps. Bull. Jard. Bot. Natl. Belg. 50, 465-504. doi: 10.2307/3667842
29. De Winter, B. (1966). Remarks on the distribution of some desert plants in Africa. Palaeoecol. Afr. 1, 188-189
30. De Winter, B. (1971). Floristic relationships between the northern and southern arid areas in Africa. Mitt. Bot. Staatssamml. Münch. 10, 424-437
31. Dransfield, J. (1988). "The palms of Africa and their relationships". in Systematic Studies in African Botany, eds P. Goldblatt and P. P. Lowry (St Louis: Missouri Botanical Garden), 95-103
32. Dupont, L. M., Jahns, S., Marret, F., and Ning, S. (2000). Vegetation change in equatorial West Africa: time-slices for the last 150 ka. Palaeogeogr. Palaeoclimatol. Palaeoecol. 155, 95-122. doi: 10.1016/S0031-0182(99)00095-4
33. Dupont, L. M., Linder, H. P., Rommerskirchen, F., and Schefuss, E. (2011). Climate-driven rampant speciation of the Cape flora. J. Biogeogr. 38, 1059-1068. doi: 10.1111/j.1365-2699.2011.02476.x
34. Dupont, L. M., Rommerskirchen, F., Mollenhauer, G., and Schefuss, E. (2013). Miocene to Pliocene changes in South African hydrology and vegetation in relation to the expansion of C-4 plants. Earth Planet. Sci. Lett. 375, 408-417. doi: 10.1016/j.epsl.2013.06.005
35. Faden, R. B. (1974). "East African coastal-West African rain forest disjunctions". in East African Vegetation, eds E. M. Lind and M. E. S. Morrison (London: Longman), 202-203
36. Feakins, S. J., Levin, N. E., Liddy, H. M., Sieracki, A., Eglinton, T. I., and Bonnefille, R. (2013). Northeast African vegetation change over 12 m.y. Geology 41, 295-298. doi: 10.1130/g33845.1
37. Galley, C., Bytebier, B., Bellstedt, D. U., and Linder, H. P. (2007). The Cape element in the Afrotemperate flora: from Cape to Cairo? Proc. R. Soc. Lond. B 274, 535-543. doi: 10.1098/rspb.2006.0046
38. Galley, C., and Linder, H. P. (2006). Geographical affinities of the Cape flora, South Africa. J. Biogeogr. 33, 236-250. doi: 10.1111/j.1365-2699.2005.01376.x
39. Gehrke, B., Bräuchler, C., Romoleroux, K., Lundberg, M., Heubl, G., and Eriksson, T. (2008). Molecular phylogenetics of Alchemilla, Aphanes and Lachemilla (Rosaceae) inferred from plastid and nuclear intron and spacer DNA sequences, with comments on generic classification. Mol. Phylogenet. Evol. 47, 1030-1044. doi: 10.1016/j.ympev.2008.03.004
40. Gehrke, B., and Linder, H. P. (2009). The scramble for Africa: pan-temperate elements on the African high mountains. Proc. R. Soc. B-Biol. Sci. 276, 2657-2665. doi: 10.1098/rspb.2009.0334
41. Goldblatt, P. (1978). An analysis of the flora of southern Africa: its characteristics, relationships, and origins. Ann. Mo. Bot. Gard. 65, 369-436. doi: 10.2307/2398858
42. Goldblatt, P. (1997). Floristic diversity in the Cape Flora of South Africa. Biodivers. Conserv. 6, 359-377. doi: 10.1023/A:1018360607299
43. Good, R. (1974). The Geography of the Flowering Plants, 4th Edn. London: Longman
44. Grimshaw, J. M. (2001). What do we really know about the Afromontane archipelago. Syst. Geogr. Plants 71, 949-957. doi: 10.2307/3668730
45. Griswold, C. E. (1991). Cladistic biogeography of Afromontane spiders. Aust. Syst. Bot. 4, 73-89. doi: 10.1071/SB9910073
46. Hamilton, A. C. (1982). Environmental History of East Africa. London: Academic Press
47. Hedberg, O. (1957). Afro-alpine vascular plants. A taxonomic revision. Symb. Bot. Ups. 15, 1-411
48. Hedberg, O. (1965). Afroalpine flora elements. Webbia 19, 519-529
49. Hilger, H. H., and Böhle, U.-R. (2000). Pontechium: a new genus distinct from Echium and Lobostemon (Boraginaceae). Taxon 49, 737-746. doi: 10.2307/1223974
50. Hilliard, O. M., and Burtt, B. L. (1987). The Botany of the Southern Natal Drakensberg. Cape Town: National Botanic Gardens
51. Hoetzel, S., Dupont, L., Schefuss, E., Rommerskirchen, F., and Wefer, G. (2013). The role of fire in Miocene to Pliocene C-4 grassland and ecosystem evolution. Nat. Geosci. 6, 1027-1030. doi: 10.1038/ngeo1984
52. Holstein, N., and Renner, S. S. (2011). A dated phylogeny and collection records reveal repeated biome shifts in the African genus Coccinia (Cucurbitaceae). BMC Evol. Biol. 11:28. doi: 10.1186/1471-2148-11-28
53. Horn, J. W., Van Ee, B. W., Morawetz, J. J., Riina, R., Steinmann, V. W., Berry, P. E., et al. (2012). Phylogenetics and the evolution of major structural characters in the giant genus Euphorbia L. (Euphorbiaceae). Mol. Phylogenet. Evol. 63, 305-326. doi: 10.1016/j.ympev.2011.12.022
54. Huber, M., and Goldner, A. (2012). Eocene monsoons. J. Asian Earth Sci. 44, 3-23. doi: 10.1016/j.jseaes.2011.09.014
55. Jacobs, B. F., and Herendeen, P. S. (2004). Eocene dry climate and woodland vegetation in tropical Africa reconstructed from fossil leaves from northern Tanzania. Palaeogeogr. Palaeoclimatol. Palaeoecol. 213, 115-123. doi: 10.1016/j.palaeo.2004.07.007
56. Jacobs, B. F., Kingston, J. D., and Jacobs, L. L. (1999). The origin of grass-dominated ecosystems. Ann. Mo. Bot. Gard. 86, 590-643. doi: 10.2307/2666186
57. Jürgens, N. (1997). Floristic biodiversity and history of African arid regions. Biodivers. Conserv. 6, 495-514. doi: 10.1023/A:1018325026863
58. Kier, G., Kreft, H., Lee, T. M., Jetz, W., Ibisch, P. L., Nowicki, C., et al. (2009). A global assessment of endemism and species richness across island and mainland regions. Proc. Natl. Acad. Sci. U.S.A. 106, 9322-9327. doi: 10.1073/pnas.0810306106
59. Killick, D. J. B. (1978). "The Afro-alpine region". in Biogeography and Ecology of Southern Africa, ed M. J. A. Werger (The Hague: Junk), 515-560. doi: 10.1007/978-94-009-9951-0_12
60. Klak, C., Reeves, G., and Hedderson, T. A. (2004). Unmatched tempo of evolution in Southern African semi-desert ice plants. Nature 427, 63-65. doi: 10.1038/nature02243
61. Klopper, R. R., Gautier, L., Chatelain, C., Smith, G. F., and Spichiger, R. (2007). Floristics of the angiosperm flora of sub-Saharan Africa: an analysis of the African plant checklist and database. Taxon 56, 201-208
62. Klopper, R. R., Gautier, L., Smith, G. F., Spichiger, R., and Chatelain, C. (2006). Inventory of the African flora: a world first for the forgotten continent. S. Afr. J. Sci. 102, 185-186
63. Koch, M. A., Kiefer, C., Ehrich, D., Vogel, J., Brochmann, C., and Mummenhoff, K. (2006). Three times out of Asia Minor: the phylogeography of Arabis alpina L. (Brassicaceae). Mol. Ecol. 15, 825-839. doi: 10.1111/j.1365-294X.2005.02848.x
64. Kreft, H., and Jetz, W. (2010). A framework for delineating biogeographical regions based on species distributions. J. Biogeogr. 37, 2029-2053. doi: 10.1111/j.1365-2699.2010.02375.x
65. Küper, W., Sommer, H., Lovett, J. C., Mutke, J., Linder, H. P., Beentje, H. J., et al. (2004). Africa's hotspots of biodiversity redefined. Ann. Mo. Bot. Gard. 91, 525-535
66. Küper, W., Sommer, J. H., Lovett, J. C., and Barthlott, W. (2006). Deficiency in African plant distribution data-missing pieces of the puzzle. Bot. J. Linn. Soc. 150, 355-368. doi: 10.1111/j.1095-8339.2006.00494.x
67. Levyns, M. R. (1962). Possible antarctic elements in the South African flora. S. Afr. J. Sci. 58, 237-241
68. Levyns, M. R. (1964). Presidential address, migrations and origin of the Cape flora. Tran. R. Soc. S. Afr. 37, 85-107. doi: 10.1080/00359196409519059
69. Linder, H. P. (1990). On the relationship between the vegetation and floras of the Afromontane and the Cape regions of Africa. Mitt. Inst. Allg. Bot. Hamburg 23b, 777-790
70. Linder, H. P. (1998). "Historical interpretation of the African phytochoria". in Chorology, Taxonomy and Ecology of the African and Madagascan Floras, eds C. R. Huxley, J. M. Lock, and D. F. Cutler (Kew: Royal Botanical Gardens), 67-86
71. Linder, H. P. (2001). Plant diversity and endemism in sub-Saharan tropical Africa. J. Biogeogr. 28, 169-182. doi: 10.1046/j.1365-2699.2001.00527.x
72. Linder, H. P. (2003). The radiation of the Cape flora, southern Africa. Biol. Rev. 78, 597-638. doi: 10.1017/S1464793103006171
73. Linder, H. P. (2005). The evolution of diversity: the Cape flora. Trends Plant Sci. 10, 536-541. doi: 10.1016/j.tplants.2005.09.006
74. Linder, H. P. (2008). Plant species radiations: where, when, why? Philos. Trans. R. Soc. 363, 3097-3105. doi: 10.1098/rstb.2008.0075
75. Linder, H. P., Bykova, O., Dyke, J., Etienne, R. S., Hickler, T., Kühn, I., et al. (2012a). Biotic modifiers, environmental modulation and species distribution models. J. Biogeogr. 39, 2179-2190. doi: 10.1111/j.1365-2699.2012.02705.x
76. Linder, H. P., De Klerk, H. M., Born, J., Burgess, N. D., Fjeldså, J., and Rahbek, C. (2012b). The partitioning of Africa: statistically defined biogeographical regions in sub-Saharan Africa. J. Biogeogr. 39, 1189-1205. doi: 10.1111/j.1365-2699.2012.02728.x
77. Linder, H. P., Lovett, J. C., Mutke, J., Barthlott, W., Jürgens, N., Rebelo, A. G., et al. (2005). A numerical re-evaluation of the sub-Saharan phytochoria of mainland Africa. Biol. Skr. 55, 229-252
78. Lovett, J. C. (1988). "Endemism and affinities of the Tanzanian montane forest flora". in Systematic studies in African botany, eds P. Goldblatt and P. P. Lowry (St Louis: Missouri Botanical Garden), 591-598
79. Lovett, J. C. (1989). "The botanical importance of the East Usambara forests in relation to other forests in Tanzania". in Forest Conservation in the East Usambara Mountains, Tanzania, eds A. C. Hamilton and R. Bensted-Smith (Gland: IUCN), 207-212
80. Lovett, J. C. (1993a). "Climatic history and forest distribution in eastern Africa". in Biogeography and Ecology of the Rain Forests of Eastern Africa, eds J. C. Lovett and S. K. Wasser (Cambridge: Cambridge University Press), 23-29
81. Lovett, J. C. (1993b). "Eastern Arc moist forest flora". in Biogeography and Ecology of the Rain Forests of Eastern Africa, eds J. C. Lovett and S. K. Wasser (Cambridge: Cambridge University Press), 33-55
82. Lovett, J. (1993c). Temperate and tropical floras in the mountains of Eastern Tanzania. Opera Bot. 121, 217-227
83. Maechler, M., Rousseeuw, P., Struyf, A., Hubert, M., and Hornik, K. (2011). cluster: Cluster Analysis Basics and Extensions. R package version 1.14.1. Available online at: http://cran.r-project.org/web/packages/cluster/index.html
84. Manning, J., and Goldblatt, P. (eds.). (2013). Plants of the Greater Cape Floristic Region. 1. The core Cape Flora. Pretoria: South African National Biodiversity Institute
85. Marloth, R. (1908). "Das Kapland, insonderheit das Reich der Kapflora, das Waldgebiet und die Karroo, pflanzengeographisch dargestelt". in Wissenschaffliche Ergebnisse der deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899, ed C. Chun (Jena: Gustav Fischer), 1-427
86. McGuire, A. F., and Kron, K. A. (2005). Phylogenetic relationships of European and African Ericas. Int. J. Plant Sci. 166, 311-318. doi: 10.1086/427478
87. Meadows, M. E., and Linder, H. P. (1993). A palaeoecological perspective on the origin of Afromontane grasslands. J. Biogeogr. 20, 345-355. doi: 10.2307/2845584
88. Misiewicz, T. M., and Zerega, N. C. (2012). Phylogeny, biogeography and characters evolution of Dorstenia (Moraceae). Edinb. J. Bot. 69, 413-440. doi: 10.1017/S096042861200025X
89. Morley, R. J. (2000). Origin and Evolution of Tropical Rain Forests. Chichester: Wiley
90. Morley, R. J., and Richards, K. (1993). Gramineae cuticle: a key indicator of Late Cenozoic climatic change in the Niger Delta. Rev. Palaeobot. Palynol. 77, 119-127. doi: 10.1016/0034-6667(93)90060-8
91. Mutke, J., and Barthlott, W. (2005). Patterns of vascular plant diversity at continental to global scales. Biol. Skr. 55, 521-531
92. Oksanen, J., Blanchet, F. G., Kindt, R., Legendre, P., Minchin, P. R., O'Hara, R. B., et al. (2012). vegan: Community Ecology Package. 2.0-5 Edn. Available online at: http://cran.r-project.org/web/packages/vegan/index.html
93. Parmentier, I., Malhi, Y., Senterre, B., Whittaker, R. J., Alonso, A., Balinga, M. P. B., et al. (2007). The odd man out? Might climate explain the lower tree alpha-diversity of African rain forests relative to Amazonian rain forests? J. Ecol. 95, 1058-1071. doi: 10.1111/j.1365-2745.2007.01273.x
94. Partridge, T. C., and Maud, R. R. (2000). "Macro-scale geomorphic evolution of southern Africa". in The Cenozoic of southern Africa, eds T. C. Partridge and R. R. Maud (Oxford: Oxford University Press), 3-18
95. Peirson, J. A., Bruyns, P. V., Riina, R., Morawetz, J. J., and Berry, P. E. (2013). A molecular phylogeny and classification of the largely succulent and mainly African Euphorbia subg. Athymalus (Euphorbiaceae). Taxon 62, 1178-1199. doi: 10.12705/626.12
96. Phipps, J. B., and Goodier, R. (1962). A preliminary account of the plant ecology of the Chimanimani Mountains. J. Ecol. 50, 291-391. doi: 10.2307/2257446
97. Plana, V. (2004). Mechanisms and tempo of evolution in the African Guineo-Congolian rainforest. Philos. Trans. R. Soc. Lond. B 359, 1585-1594. doi: 10.1098/rstb.2004.1535
98. Potts, A. J., Hedderson, T. A., Franklin, J., and Cowling, R. M. (2013). The Last Glacial Maximum distribution of South African subtropical thicket inferred from community distribution modelling. J. Biogeogr. 40, 310-322. doi: 10.1111/j.1365-2699.2012.02788.x
99. Prebble, J. M., Cupido, C. N., Meudt, H. M., and Garnock-Jones, P. J. (2011). First phylogenetic and biogeographical study of the southern bluebells (Wahlenbergia, Campanulaceae). Mol. Phylogenet. Evol. 59, 636-648. doi: 10.1016/j.ympev.2011.03.013
100. Ramdhani, S., Barker, N. P., and Baijnath, H. (2008). Exploring the Afromontane centre of endemism: Kniphofia Moench (Asphodelaceae) as a floristic indicator. J. Biogeogr. 35, 2258-2273. doi: 10.1111/j.1365-2699.2008.01982.x
101. Ramdhani, S., Cowling, R. M., and Barker, N. P. (2010). Phylogeography of Schotia (Fabaceae): recent evolutionary processes in an ancient thicket biome lineage. Int. J. Plant Sci. 171, 626-640. doi: 10.1086/653133
102. R Development Core Team (2012). R: A language and environment for statistical computing. 2.15.2 GUI 1.53 Edn. Vienna: R Foundation for Statistical Computing
103. Renner, S. S. (2004). Plant dispersal across the tropical Atlantic by wind and sea currents. Int. J. Plant Sci. (Suppl.) 165, S23-S33. doi: 10.1086/383334
104. Riina, R., Peirson, J. A., Geltman, D. V., Molero, J., Frajman, B., Pahlevani, A., et al. (2013). A worldwide molecular phylogeny and classification of the leafy spurges, Euphorbia subgenus Esula (Euphorbiaceae). Taxon 62, 316-342. doi: 10.12705/622.3
105. Rutschmann, F., Eriksson, T., Schönenberger, J., and Conti, E. (2004). Did Crypteroniaceae really disperse out of India? Molecular dating evidence from rbcL, ndhF, and rpl16 intron sequences. Int. J. Plant Sci. Suppl. 165, S69-S83. doi: 10.1086/383335
106. Sanmartin, I., Lisa Anderson, C., Alarcon, M., Ronquist, F., and Jose Aldasoro, J. (2010). Bayesian island biogeography in a continental setting: the Rand Flora case. Biol. Lett. 6, 703-707. doi: 10.1098/rsbl.2010.0095
107. Sauquet, H., Weston, P. H., Barker, N. P., Anderson, C. L., Cantrill, D. J., and Savolainen, V. (2009). Using fossils and molecular data to reveal the origins of the Cape proteas (subfamily Proteoideae). Mol. Phylogenet. Evol. 51, 31-43. doi: 10.1016/j.ympev.2008.12.013
108. Scharf, T. E., Codilean, A. T., De Wit, M., Jansen, J. D., and Kubik, P. W. (2013). Strong rocks sustain ancient postorogenic topography in southern Africa. Geology 41, 331-334. doi: 10.1130/G33806.1
109. Schrire, B. D., Lavin, M., and Lewis, G. P. (2005a). Global distribution patterns of the Leguminosae: insights from recent phylogenies. Biol. Skr. 55, 375-422
110. Schrire, B. D., Lewis, G. P., and Lavin, M. (2005b). "Biogeography of the Leguminosae". in Legumes of the World, eds G. P. Lewis, B. D. Schrire, B. Mackinder and J. M. Lock (Kew: The Royal Botanic Gardens), 21-54
111. Scott, L. (2002). Grassland development under glacial and interglacial conditions in southern Africa: review of pollen, phytolith and isotope evidence. Palaeogeogr. Palaeoclimatol. Palaeoecol. 177, 47-57. doi: 10.1016/S0031-0182(01)00351-0
112. Sepulchre, P., Ramstein, G., Fluteau, F., Schuster, M., Tiercelin, J. J., and Brunet, M. (2006). Tectonic uplift and Eastern Africa aridification. Science 313, 1419-1423. doi: 10.1126/science.1129158
113. Smith, J. M. B., and Cleef, A. M. (1988). Composition and origins of the world's tropicalpine floras. J. Biogeogr. 15, 631-645. doi: 10.2307/2845441
114. Snijman, D. A. (ed.). (2013). Plants of the Great Cape Floristic Region. 2: The Extra Cape Flora. Pretoria: South African National Biodiversity Institute
115. Sosef, M. S. M. (1996). "Begonias and African rain forest refuges: general aspects and recent progress". in The Biodiversity of African Plants, eds L. J. G. Van Der Maesen, X. M. Van Der Burgt, and J. M. Van Medenbach De Rooy. (Dordrecht: Kluwer), 602-611
116. Takhtajan, A. (1986). Floristic Regions of the World. Berkeley: University of California Press
117. Thiv, M., Van Der Niet, T., Rutschmann, F., Thulin, M., Brune, T., and Linder, H. P. (2011). Old-New World and trans-African disjunctions of Thamnosma (Rutaceae): intercontinental long-distance dispersal and local differentiation in the succulent biome. Am. J. Bot. 98, 76-87. doi: 10.3732/ajb.1000339
118. Thorne, R. F. (1973). "Floristic relationships between tropical Africa and tropical America". in Tropical Forest Ecosystems in Africa and South America: A Comparative Review, eds B. J. Meggers, A. S. Ayensu, and W. D. Duckworth (Washington: Smithsonian Institution Press), 27-47
119. Tinker, J., De Wit, M., and Brown, R. (2008a). Linking source and sink: evaluating the balance between onshore erosion and offshore sediment accumulation since Gondwana break-up, South Africa. Tectonophysics 455, 94-103. doi: 10.1016/j.tecto.2007.11.040
120. Tinker, J., De Wit, M., and Brown, R. (2008b). Mesozoic exhumation of the southern Cape, South Africa, quantified using apatite fission track thermochronology. Tectonophysics 455, 77-93. doi: 10.1016/j.tecto.2007.10.009
121. Utescher, T., and Mosbrugger, V. (2007). Eocene vegetation patterns reconstructed from plant diversity-A global perspective. Palaeogeogr. Palaeoclimatol. Palaeoecol. 247, 243-271. doi: 10.1016/j.palaeo.2006.10.022
122. Valente, L. M., Britton, A. W., Powell, M. P., Papadopulos, A. S. T., Burgoyne, P. M., and Savolainen, V. (2014). Correlates of hyperdiversity in southern African ice plants (Aizoaceae). Bot. J. Linn. Soc. 174, 110-129. doi: 10.1111/boj.12117
123. Valente, L. M., Reeves, G., Schnitzler, J., Mason, I. P., Fay, M. F., Rebelo, T. G., et al. (2010). Diversification of the African genus Protea (Proteaceae) in the Cape biodiversity hotspot and beyond: equal rates in different biomes. Evolution 64, 745-760. doi: 10.1111/j.1558-5646.2009.00856.x
124. Valente, L. M., Savolainen, V., Manning, J. C., Goldblatt, P., and Vargas, P. (2011). Explaining disparities in species richness between Mediterranean floristic regions: a case study in Gladiolus (Iridaceae). Glob. Ecol. Biogeogr. 20, 881-892. doi: 10.1111/j.1466-8238.2010.00644.x
125. Van Wyk, A. E. (1989). "Floristics of the Natal/Pondoland sandstone forests". in Biogeography of the Mixed Evergreen Forests of Southern Africa, ed C. J. Geldenhuys, 145-157, chtr. 149
126. Van Wyk, A. E. (1990). A new species of Leucadendron (Proteaceae) from Pondoland, with a discussion of its biogeography. S. Afr. J. Bot. 56, 458-466
127. Venables, W. N., and Ripley, B. D. (2002). Modern Applied Statistics with S, 4th Edn. New York, NY: Springer
128. Verboom, G. A. (2006). A phylogeny of the schoenoid sedges (Cyperaceae: Schoeneae) based on plastid DNA sequences, with special reference to the genera found in Africa. Mol. Phylogenet. Evol. 38, 79-89. doi: 10.1016/j.ympev.2005.05.012
129. Verboom, G. A., Archibald, J. K., Bakker, F. T., Bellstedt, D. U., Conrad, F., Dreyer, L. L., et al. (2009). Origin and diversification of the Greater Cape flora: ancient species repository, hot-bed of recent radiation, or both? Mol. Phylogenet. Evol. 51, 44-53. doi: 10.1016/j.ympev.2008.01.037
130. Verdcourt, B. (1969). The arid corridor between the northeast and southwest areas of Africa. Palaeoecol. Afr. 4, 140-144
131. Wang, H. C., Moore, M. J., Soltis, P. S., Bell, C. D., Brockington, S. F., Alexandre, R., et al. (2009). Rosid radiation and the rapid rise of angiosperm-dominated forests. Proc. Natl. Acad. Sci. U.S.A. 106, 3853-3858. doi: 10.1073/pnas.0813376106
132. Weeks, A., and Simpson, B. B. (2007). Molecular phylogenetic analysis of Commiphora (Burseraceae) yields insight on the evolution and historical biogeography of an "impossible" genus. Mol. Phylogenet. Evol. 42, 62-79. doi: 10.1016/j.ympev.2006.06.015
133. Weimarck, H. (1933). Die Verbreitung einiger Afrikanisch-montanen Pflanzengruppen, I-II. Sven. Bot. Tidskr. 27, 400-419
134. Weimarck, H. (1936). Die Verbreitung einiger Afrikanisch-montanen Pflanzengruppen, III-IV. Sven. Bot. Tidskr. 30, 36-56
135. Weimarck, H. (1941). Phytogeographical groups, centres and intervals within the Cape flora. Acta Univ. Lund. Nova Ser. Sect. 2 Med. Math. Sci. Rerum Nat. 37, 3-143
136. White, F. (1965). The savanna woodlands of the Zambezian and Sudanian domains. Webbia 19, 651-681
137. White, F. (1978). "The afromontane region". in Biogeography and Ecology of Southern Africa, ed M. J. A. Werger (The Hague: Junk), 463-513. doi: 10.1007/978-94-009-9951-0_11
138. White, F. (1981). The history of the Afromontane archipelago and the scientific need for its conservation. Afr. J. Ecol. 19, 33-54. doi: 10.1111/j.1365-2028.1981.tb00651.x
139. White, F. (1983). The Vegetation of Africa. Paris: Unesco
140. Wichura, H., Bousquet, R., Oberhansli, R., Strecker, M. R., and Trauth, M. H. (2010). Evidence for middle Miocene uplift of the East African Plateau. Geology 38, 543-546. doi: 10.1130/G31022.1
141. Wickens, G. E. (1976). The Flora of Jebel Marra (Sudan Republic) and its Geographical Affinities. London: Her Majesties Stationary Office