Factors determining levels of threat to serpentine endemics

South African Journal of Botany

Volumn 72, Issue 4, 2006, Pages 619-626

  Williamson, S D ^a   Balkwill, K ^a  

^a UNIVERSITY OF THE WITWATERSRAND   (South Africa)

Author keywords

Conservation status; Endemics; IUCN categories; Serpentine

Indexed keywords

AFFORESTATION; CONSERVATION STATUS; ENDEMIC SPECIES; NATURE CONSERVATION; OUTCROP; RISK FACTOR; SERPENTINE;

AFRICA; BARBERTON GREENSTONE BELT; KAAPVAAL CRATON; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

EID: 33749438536     PISSN: 02546299     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.sajb.2006.06.002     Document Type: Article

References (33)

1. Akçakaya H.R., and Ferson S. RAMAS Red List-Threatened Species Classifications Under Uncertainty, Version 2.0 (2001), Applied Biomathematics, New York
2. Angle J.S., Chaney R.L., Baker A.J.M., Li Y., Reeves R., Volk V., Roseberg R., Brewer E., Burke S., and Nelkin J. Developing commercial phytoextraction technologies: practical considerations. South African Journal of Science 97 (2001) 619-623
3. Balkwill K., and Balkwill M.-J. Studies on serpentine flora: a new species of Brachystelma (Asclepiadeaceae). South African Journal of Botany 54 (1988) 60-62
4. Balkwill, M-J., Balkwill, K., 1999. Characteristics, Diversity, Endemism and Conservation of selected serpentine sites in the Barberton Greenstone Belt. (Unpublished report) C.E. Moss Herbarium, Johannesburg, South Africa.
5. Balkwill K., Williamson S.D., Kidger C.L., Robinson E.R., Stalmans M., and Balkwill M.-J. Diversity and conservation of serpentine sites in southern Mpumalanga (Eastern Tvl.), S.A. In: Jaffré T., Reeves R.D., and Becquer T. (Eds). The Ecology of Ultramafic and Metalliferous Areas. Orstom, Nouméa, Doc, Sci. Tech. vol. 1116 (1997) P133 ISSN :1245-222X
6. Bromilow C. Problem Plants of South Africa. A Guide to the Identification and Control of more than 300 Invasive Plants and other Weeds (2001), Briza Publications, Pretoria, South Africa. 1-8750-93273
7. Brooks R.R., Robinson B.H., Howes A.W., and Chiarucci A. An evaluation of Berkheya coddii Roessler and Alyssum bertolonii Desv. for phytoremediation. South African Journal of Science 97 (2001) 558-560
8. Dyer R.A. Ceropegia, Brachystelma and Riocreuxia in Southern Africa (1983), A.A. Balkema, Rotterdam. -9061-91227-X
9. Edwards T.J., and Getliffe Norris F. Salpinctium, a new genus of Acanthaceae in southern Africa. South African Journal of Botany 55 (1989) 6-10
10. Gärdenfors U. Classifying threatened species at national versus global levels. Trends in Ecology and Evolution 16 (2001) 511-516
11. Gärdenfors U., Rodríguez J.P., Hilton-Taylor C., Hyslop C., Mace G., Molur S., and Poss S. Draft guidelines for the application of IUCN red list criteria at national and regional levels. In: Golding J.S. (Ed). Southern African Plant Red data Lists. SABONET Report No 14: (Appendix 3) SABONET, Pretoria, South Africa (2002). 1-919795-64-2
12. Golding J. Red data lists in southern Africa-past, present and future. SABONET News 6 (2001) 162-168
13. Hologne F. Etude de L'erosion des sols riches en Serpentine dans la vallee de Dunbar, South-eastern Transvaal (Afrique du sud), Faculte des Sciences, Agronomiquesde gembloux (1994), Department of Botany, University of the Witwatersrand, Johannesburg
14. Hilton-Taylor C. Red Data List of Southern African Plants. Strelitzia vol. 4 (1996). 1-874907-29-3
15. IUCN., 1994. IUCN Red List Categories Version 2.3. IUCN, Gland, Switzerland. Downloaded from www.redlist.org/info.categories_criteria.
16. IUCN., 2001. IUCN Red List Categories Version 3.1. IUCN, Gland, Switzerland. Downloaded from www.iucn.org/themes/ssc/redlists/RLcats2001booklet.html.
17. Kruckeberg A.R. Serpentine biota of western north America. Legacy of the past, present status and future needs. In: Baker A.J.M., Proctor J., and Reeves R.D. (Eds). The Vegetation of Ultramafic (Serpentine) Soils (1992), Intercept Publishers, Andover, Hampshire. 0-946707-62-6
18. Lötter M., Burrows J., and Emery A. Phytochoria: centres and regions of endemism. In: Emery A.J., Lötter M., and Williamson S.D. (Eds). Determining the conservation value of land in Mpumalanga. Mpumalanga Parks Board. Part of the Strategic Environmental Assessment by the Department of Water Affairs and Forestry (2002)
19. Low A.B., and Rebelo A.G. Vegetation of SA, Lesotho and Swaziland: a Companion to the Vegetation Map of South Africa, Lesotho and Swaziland (1996), Department of Environmental Affairs and Tourism, Pretoria. 0-6211-7316-9
20. Mesjasz-Przybylowicz J., Przybylowicz W.J., and Pineda C.A. Nuclear microprobe studies of elemental distribution in apical leaves of the Ni hyperaccumulator Berkheya coddii. South African Journal of Science 97 (2001) 591-592
21. Mesjasz-Przybylowicz J., Przybylowicz W.J., Rama D.B.K., and Pineda C.A. Elemental distribution in Senecio anomalochrous, a Ni hyperaccumulator from South Africa. South African Journal of Science 97 (2001) 593-595
22. Moffett R. A new species of Rhus (Anacardiaceae), endemic to serpentine near Barberton, Mpumalanga (Eastern Transvaal), South Africa. Botanical Journal of the Linnean Society 130 (1999) 37-42
23. Morrey D.R., Balkwill K., and Balkwill M.-J. Studies on serpentine flora: preliminary analyses of soils and vegetation associated with serpentine rock formations in the south-eastern Transvaal. South African Journal of Botany 55 (1989) 171-177
24. Morrey D.R., Balkwill K., Balkwill M.-J., and Williamson S.D. A review of some studies of the serpentine flora of southern Africa. In: Baker A.J.M., Proctor J., and Reeves R.D. (Eds). The Vegetation of Ultramafic (Serpentine) Soils (1992), Intercept Publishers, Andover, Hampshire. 0-946707-62-6
25. Phillips E.P. A revision of the South African Material of the Genus Cyphia Berg. Annals of the South African Museum 9 (1917) 150-459
26. Roberts B.A., and Proctor J. The Ecology of Areas with Serpentinized Rocks-a World View (1992), Kluwer Academic Publishers, Dordrecht, Netherlands. 0-7923-0922-7
27. SABONET., 2003. Southern African Plant Red Data List Database Version 1.0, SABONET, Pretoria, South Africa.
28. Smith G.F., Steyn E.M.A., Victor J.E., Crouch N.R., Golding J., and Hilton-Taylor C. Aloaceae. The conservation status of Aloe in South Africa: an updated synopsis. Bothalia 30 (2000) 206-211
29. Van Wyk A.E., and Smith G.F. Regions of Floristic Endemism in Southern Africa. A Review with Emphasis on Succulents (2001), Umdaus Press, Pretoria. 1-9197-6618-9
30. Victor J.E. South Africa. In: Golding J.S. (Ed). Southern African Plant Red Data Lists. SABONET Report vol. 14:93 (2002). 1-919795-64-2
31. Vollesen K. A revision of the African genus Sclerochiton (Acanthaceae: Acantheae). Kew Bulletin 46 (1991) 1-59
32. Williamson, S.D., 1994. Biosystematic Studies of the Serpentine Flora of the South-eastern Transvaal. MSc Thesis. University of the Witwatersrand, Johannesburg.
33. Williamson S.D., Robinson E.R., and Balkwill K. Evolution of two serpentine endemic taxa in Mpumalanga. South African Journal of Botany 63 (1997) 507-513