Impacts of non-selective grazing on cover, composition, and productivity of nama-karoo grassy shrubland

African Journal of Range and Forage Science

Volumn 17, Issue 1-3, 2000, Pages 27-35

  Heukes, P C ^a   Cowling, R M ^b  

^a Department of Nature Conservation and Oceanography ^*  (South Africa)

^b UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

Grazing strategies; High intensity grazing; Short duration grazing; Vegetation change

Indexed keywords

EID: 0037616768     PISSN: 10220119     EISSN: 17279380     Source Type: Journal    
DOI: 10.2989/10220110009485736     Document Type: Article

References (48)

1. Acocks JPH 1966. Non-selective grazing as a means of veld reclamation. Proceedings of the Grassland Society of Southern Africa 1:33-39.
2. Acocks JPH 1975. Veld types of South Africa (2nd edition). Memoirs of the Botanical Survey of South Africa 40.
3. Arnold TH & De Wet BC (eds) 1993. Plants of southern Africa: names and distribution. Memoirs of the Botanical Survey of South Africa 62.
4. Barnard SA 1986. Oumansoutbos in die mnterreënstreek. Farming in South Africa 140.
5. Curry PJ & Hacker RB 1990. Can pastoral grazing management satisfy endorsed conservation objectives in arid Western Australia? Journal of Environmental Management 30:295-320.
6. Danckwerts JE 1987. The animal/plant interaction. In: Danckwerts JE & Teague WR (eds). Veld management in the eastern Cape. Dept of Agriculture, Stutterheim, pp. 92-108.
7. Dean WRJ 1992. Effects of animal activity on the absorption rate of soils in the Southern Karoo, South Africa. Journal of the Grassland Society of Southern Africa 9:178-180.
8. Eckert RE, Peterson FF, Meurisse MS & Stephens JL 1986. Effects of soil-surface morphology on emergence and survival of seedlings in Big Sagebrush communities. Journal of Range Management 39:414-420.
9. Ellis F & Lambrechts JJN 1986. Soils. In: Cowling RM, Roux PW & Pieterse AJH (eds). The karoo biome: a preliminary synthesis Part 1-physical environment. South African National Scientific Programmes Report 124, CSIR, Pretoria, pp. 18-38.
10. Esler KJ & Cowling RM 1993. Edaphic factors and competition as determinants of pattern in South African karoo vegetation. South African Journal of Botany 59:287-295.
11. Gibson CWD, Watt TA & Brown VK 1987. The use of sheep grazing to recreate species-rich grassland from abandoned arable land. Biological Conservation 42:165-183.
12. Hobson FO & Sykes E 1980. Defoliation frequency with respect to three Karoo bush species. Karoo Agriculture 1:9-11.
13. Hoffman MT & Cowling RM 1987. Plant physiognomy, phenology and demography. In: Cowling RM & Roux PW (eds). The karoo biome: a preliminary synthesis Part 2-vegetation and history. South African National Scientific Programmes Report 142, CSIR, Pretoria, pp. 1-34.
14. Hoffinan MT 1988. The rationale for Karoo grazing systems: criticisms and research implications. South African Journal of Science 84:556-559.
15. Hoffman MT, Barr GD & Cowling RM 1990. Vegetation dynamics in the semi-arid eastern Karoo, South Africa: the effect of seasonal rainfall and competition on grass and shrub basal cover. South African Journal of Science 86:462-463.
16. Howell D 1976. Observation of the role of grazing animals in revegetating problem patches of veld. Proceedings of the Grassland Society of Southern Africa 11:59-63.
17. Huntley N 1991. Herbivores and the dynamics of communities and ecosystems. Annual Review of Ecology & Systematics 22:477-503.
18. Jackson RB & Caldwell MM 1993. Geostatistical patterns of soil heterogeneity around individual perennial plants. Journal of Ecology 81:683-692.
19. Manley WA, Hart RH, Samual MJ, Smith MA, Waggoner JW, Manley JR. & Manley JT 1997. Vegetation, cattle, and economic responses to grazing strategies and pressures. Journal of Range Management 50:638-646.
20. McCabe K 1987. Veld management in the Karoo. The Naturalist 31:8-15.
21. McClaran MP & Anable ME 1992. Spread of introduced Lehmann lovegrass along a grazing intensity gradient. Journal of Applied Ecology 29:92-98.
22. McNaughton SJ, Ruess RW & Seagle SW 1988. Large mammals and process dynamics in African ecosystems. BioScience 38:794-800.
23. Milton SJ 1992. Effects of rainfall, competition and grazing on flowering of Osteospermum sinuatum (Asteraceae) in arid Karoo rangeland. Journal of the Grassland Society of Southern Africa 9:158-164.
24. Milton SJ & Hoffman MT 1994. The application of state-and-transition models to rangeland research and management in arid succulent and semi-arid grassy Karoo, South Africa. African Journal of Range & Forage Science 11:18-26.
25. Milton SJ, Dean WRJ, Marincowitz CP & Kerley GIH 1995. Effects of the 1990/91 drought on rangeland in the Steytlerville Karoo. South African Journal of Science 91:78-84.
26. Novellie P & Stiydom G 1987. Monitoring the response of vegetation to use by large herttivores: an assessment of some techniques. South African Journal of Wildlife Research 17:109-117.
27. Noy-Meir I 1990. Response of two semiarid rangeland communities to protection from grazing. Israel Journal of Botany 39:431-442.
28. O'Connor TG 1991. Influence of rainfall and grazing cm the compositional change of the herbaceous layer of a sandveld savanna. Journal of the Grassland Society of Southern Africa 8:103-109.
29. O'Connor TG & Roux PW 1995. Vegetation changes (1949-1971) in a semi-arid, grassy dwarf shrubland in the Karoo, South Africa: influence of rainfall variability and grazing by sheep. Journal of Applied Ecology 32:612-626.
30. O’Connor TG & Pickett GA 1992. The influence of grazing on seed production and seed banks of some Afiican savanna grasslands. Journal of Applied Ecology 29:247-260.
31. O’Reagain PJ & Turner JR 1992. An evaluation of the empirical basis for grazing management recommendations for rangeland in Southern Africa. Journal of the Grassland Society of Southern Africa 9:38-49.
32. Payne RW 1995. Procedure AREPMEASURES. Genstat 5 Release 3.2 (PC/Windows 95). Lawes Agricultural Trust (Rothamsted Experimental Station).
33. Roux PW 1967. Die onmiddelike uitwerking van intensiewe beweiding op gemengde karooveld. Proceedings of the Grassland Society of Southern Africa 2:83-90.
34. Roux PW & Theron GK 1987. Vegetation change in the Karoo Biome. In: Cowling RM & Roux PW (eds). The karoo biome: a preliminary synthesis Part 2-vegetation and history. South African National Scientific Programmes Report 142, CSIR, Pretoria, pp. 50-69.
35. Roux PW & Vorster M 1983. Development of veld management research in the Karoo region. Proceedings of the Grassland Society of Southern Africa 18:30-34.
36. Savory A 1987. A holistic approach to ranch management using short duration grazing. Proceedings of the 1st International Rangeland Congress, Denver, Colorado, pp. 555-557.
37. Savory A 1988. Holistic resource management. Island Press, Covelo, California, USA.
38. Savory A 1991. Holistic resource management: a conceptual framework for ecologically sound economic modelling. Ecological Economics 3:181-191.
39. Schulze RE 1997. South African atlas of agrohydrology and-climatology. Report TT82/96, Water Research Commission, Pretoria.
40. Shearing D 1994. Karoo. South African Wild Flower Guide 6. Botanical Society of South Africa, Kirstenbosch.
41. Silander JA 1983. Demographic variation in the Australian desert Cassia under grazing pressure. Oecologia 60:227-233.
42. Skead CJ 1982. Historical mammal incidence in the Cape Province. Vol. I: The western and northern Cape. Department Nature and Environmental Conservation, Cape Town.
43. Tongway D 1994. Rangeland soil condition assessment manual. CSIRO, Australia.
44. Tongway D & Hindley N 1995. Manual for soil condition assessment of tropical grasslands. CSIRO, Australia.
45. Trémont RM 1994. Life-history attributes of plants in grazed and ungrazed grasslands on the Northern Tablelands of New South Wales. Australian Journal of Botany 42:511-530.
46. Van Oudsthoom FP 1991. Guide to grasses of South Africa. Briza Publications, Pretoria.
47. Venter JC 1962. Die produksie van groenmateriaal deur vyf karoobossoorte gedurende die vier seisoene van die jaar. Unpublished report, Grootfontein Agricultural College, Middelburg.
48. Willms WD, McGinn SM & Donnaar JF 1993. Influence of litter on herbage production in the mixed prairie. Journal of Range Management 46:320-324.