The effect of land-use on the vegetation communities along a topo-moisture gradient in the mid-Fish River valley, South Africa

African Journal of Range and Forage Science

Volumn 16, Issue 1, 1999, Pages 1-8

  Birch, N V ^a   Avis, A M ^a   Palmer, A R ^b  

^a RHODES UNIVERSITY   (South Africa)

^b ARC Range and Forage Institute   (South Africa)

Author keywords

CANOCO; DESERTIFICATION; DIRECT GRADIENT ANALYSIS; ENVIRONMENTAL GRADIENT; THICKET BIOME

Indexed keywords

EID: 0039833682     PISSN: 10220119     EISSN: 17279380     Source Type: Journal    
DOI: 10.2989/10220119909485712     Document Type: Article

References (26)

1. Acocks JPH 1988. Veld types of South Africa (3rd edn). Memoirs of the Botanical Survey of South Africa 57.
2. Ainslie A, Fox R & Fabricius C 1994. Towards policies for feasible and sustainable natural resource use: the mid-Fish River zonal study. Eastern Cape. Unpublished report to the Institute of Social and Economic Research, Rhodes University, Grahamstown.
3. Austin MP, Cunningham RB & Fleming PM 1984. New approaches to direct gradient analysis using environmental scalars and statistical curve-fitting procedures. Vegetatio 55:11-27.
4. Brown DG 1994. Predicting vegetation types at trccline using topography and biophysical disturbance variables. Journal of Vegetation Science 5: 641-656.
5. Brown A, Birks HJB & Thompson DBA 1993. A new biogeographical classification of the Scottish uplands. II Vegetation-environment relationships Journal of Ecology 81:231-251.
6. Cowling RM 1984. A syntaxonomic and synccologicaJ stud' in the Humansdorp region of the Fynbos Biomc. Bothalia 15.175-227.
7. Dent MC, Lynch SD & Schulze RE 1989. Mapping mean annual and other rainfall statistics in southern Africa. ACRU Repon 27, Department of Agricultural Engineering, University of Natal, Pietermaritzburg.
8. Evans NV, Avis AM & Palmer AR 1997. Changes to the vegetation of the mid-Fish River valley, Eastern Cape South Africa, in response to land-use, as revealed by a direct gradient analysis. African Journal of Range & Forage Science, 14:68-74.
9. Everard DA 1987. A classification of the Subtropical Transitional Thicket in the eastern Cape, based on syntaxonomic and structural attributes. South African Journal of Botany. 53:329-340.
10. Gauch HG 1982. Multivariate analysis in community ecology. Cambridge University Press.
11. La Cock GD, Palmer AR. & Everard DA 1990. Re-assessment of the area and conservation status of Subtropical Transitional Tliicket (Valley Bushveld) in the Eastern Cape. South Africa. South African Journal of Photogrammetrv. Remoie Sensing and Cartography 15:231-235.
12. Low AB & Rebelo AG (eds) 1995. Vegetation of South Africa. Lesotho and Swaziland. Department of Environmental Affairs and Tourism, Pretoria.
13. Loxton RF, Hunting and Associates 1979. Development Plan. Fish/Kat Basins. Department of Agriculture. Ciskei Government. Zwelitsha.
14. Marker ME 1990. Environmental variables acting on Valiev Bushveld. Proceedings of the Valley Bushveld Symposium. Grassland Society of Southern Afnca, Pietermaritzburg.
15. Munchin PR 1987. Simulation of multidimensional community patterns: towards a comprehensive model. Vegetatio 71:145-156.
16. Mountain ED 1946 The geology of the area east of Grahamstown. Government Printer, Pretoria.
17. Palmer AR 1981. A study of the vegetation of the Andries Vosloo Kudu Reserve. MSc thesis. Rhodes University. Grahamstown.
18. Palmer AR & Avis AM 1994. The description, mapping and evaluation of recent changes in the contemporary vegetation pattern of the Mid-Fish River Valley. Unpublished report to the Land and Agricultural Policy Centre. Johannesburg.
19. Palmer AR and Avis AM 1995. Trends in the dynamics and composition of valley bushveld under differing land-use strategics in the Great Fish River valley. Proceedings of he Second Valley Bushveld Symposium. Grassland Society of Southern Africa. Pietermaritzburg.
20. Parker KC 1991. Topography, substrate, and vegetation patterns in the northern Sonoran Desert. Journal of Biogeography 18:151-163.
21. Peet RK 1988. Forests of the Rocky Mountains. In: Baibour MG & Billings WD (eds). North American tcrresirial vegetation. Cambridge University Press. New York, pp. 63-101.
22. Schlesinger WH, Reynolds JF, Cunningham GL, Huen-neke LF, Jarrell WM, Virginia RA & Whitford WG 1990. Biological feedbacks in global desertification. Science 247:1043-1047.
23. Taggart JB 1994. Ordination as an aid in determining priorities for plant community protection. Biological Conservation 68:135-141.
24. Ter Braak CJF 1988. CANOCO-a FORTRAN program for canonical community ordination by canonical correspondence analysis, principal component analysis and redundancy analysis (version 2.1). Agricultural Mathematics Group. Netherlands.
25. Ter Braak CJF & Prentice IC 1988. A theory of gradient analysis. Advances in Ecological Research Volume 18. Academic Press, London.
26. USA-CERL 1991. GRASS 4.0. User's Manual United States Army Corps of Engineers. Construction Engineering Laboratory, Champaign, 1L.