Large trees, fertile islands, and birds in arid savanna

Journal of Arid Environments

Volumn 41, Issue 1, 1999, Pages 61-78

  Dean, W R J ^a   Milton, S J ^a   Jeltsch, F ^b  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b HELMHOLTZ CENTRE FOR ENVIRONMENTAL RESEARCH UFZ   (Germany)

Author keywords

Acacia erioloba; Fleshy fruits; Kalahari; Patch dynamics; Raptors; Seed dispersal

Indexed keywords

AVIFAUNA; BIODIVERSITY; KEYSTONE SPECIES; PLANT COMMUNITY; SOIL FERTILITY; TREE;

AFRICA; KALAHARI DESERT;

ACACIA; ACACIA ERIOLOBA; ACACIA HAEMATOXYLON; ANIMALIA; ANTIDORCAS MARSUPIALIS; ARDEOTIS KORI; AVES; BOSCIA; CANIDAE; CONNOCHAETES TAURINUS; GAZELLA; GREWIA; HAEMATOXYLUM; LYCIUM; MAMMALIA; ORYX GAZELLA; OTIDIDAE; OTOCYON MEGALOTIS; PHILETARIUS SOCIUS; PLOCEINAE; RAPTORES; SOLANUM; THALLOMYS PAEDULCUS;

EID: 0032943480     PISSN: 01401963     EISSN: None     Source Type: Journal    
DOI: 10.1006/jare.1998.0455     Document Type: Article

References (55)

1. Archer, S., Scifres, C., Bassham, C.R. & Maggio, R. (1988). Autogenic succession in a subtropical savanna: Conversion of grassland to thorn woodland. Ecological Monography, 58: 111-127.
2. Arnold, T.H. & de Wet, B.C. (1993). Plants Of Southern Africa: Names and Distribution. Pretoria: National Botanical Institute. 825 pp.
3. Barnes, R.D., Fagg, C.W. & Milton, S.J. (1997). Acacia erioloba. Monograph and annotated bibliography. Tropical Forestry Papers No. 35. Oxford: Oxford Forestry Institute. 66 pp.
4. Belsky, A.J. & Canham, C.D. (1994). Forest gaps and isolated forest trees. Bioscience, 44: 77-84.
5. Belsky, A.J., Amundson, R.G., Duxbury, J.M., Riha, S.J., Ali, A.R. & Mwonga, S.M. (1989). The effects of trees on their physical, chemical and biological environments in a semi-arid savanna in Kenya. Journal Of Applied Ecology, 26: 1005-1024.
6. Belsky, A.J., Mwonga, S.M., Amundson, R.G., Duxbury, J.M. & Ali, A.R. (1993). Comparative effects of isolated trees on their undercanopy environments in high- And low-rainfall savannas. Journal Of Applied Ecology, 30: 143-155.
7. Bews, J.W. (1917). The plant succession in the thornveld. South African Journal Of Science, 14: 153-172.
8. Bond, W.J. & van Wilgen, B.W. (1996). Fire and Plants. London: Chapman & Hall. 263 pp.
9. Bothma, J. Du P. (1966). Notes on the stomach contents of certain carnivora (mammalia) from the Kalahari Gemsbok Park. Koedoe, 9: 37-40.
10. Brooke, R.K. (1992). The bird community of tamarix-clad drainages, northwestern Karoo, Cape Province. Ostrich, 63: 42-43.
11. Campbell, B.M., Swift, M.J., Hatton, J. & Frost, P.G.H. (1988). Small-scale vegetation pattern and nutrient cycling in miombo woodland. In: Verhoeven, J.T.A., Heil, G.W. & Werger, M.J.A. (Eds), Vegetation Structure in Relation to Carbon and Nutrient Economy, Pp. 69-85. Champaign, IL: Balogh Scientific Books. 198 pp.
12. Coe, M. & Coe, C. (1987). Large herbivores, acacia trees and bruchid beetles. South African Journal Of Science, 83: 624-635.
13. Coetzee, B.J., van der Meulen, F., Swanziger, S., Gonsalves, P. & Weisser, P.J. (1976). A phytosociological classification of the nylsvley nature reserve. Bothalia, 12: 137-160.
14. Dean, W.R.J. (1975). Tyto alba prey in South West Africa and the northern Cape. Zoologica Africana, 10: 217-219.
15. Dean, W.R.J. & Milton, S.J. (1988). Dispersal of seeds by raptors. African Journal Of Ecology, 26: 173-176.
16. Dean, W.R.J. & Milton, S.J. (1991). Patch disturbances in arid grassy dunes: Antelope, rodents and annual plants. Journal Of Arid Environments, 20: 231-237.
17. Eloff, F.C. (1959). Observations on the migration and habits of the antelopes of the Kalahari Gemsbok Park. Parts 1 & 2. Koedoe, 2: 1-51.
18. Fitzsimons, V. & Brain, C.K. (1958). A short account of the reptiles of the Kalahari Gemsbok National Park. Koedoe, 1: 99-104.
19. Griffioen, C. & O'Connor, T.G. (1990). The influence of trees and termite mounds on the soils and herbaceous composition of a savanna grassland. South African Journal Of Ecology, 1: 18-26.
20. Huffman, M.T., Cowling, R.M., Douie, C. & Pierce, S.M. (1989). Seed predation and germination of acacia erioloba in the kuiseb river valley, namib desert. South African Journal Of Botany, 55: 103-106.
21. Hughes, L., Westoby, M. & Johnson, A.D. (1993). Nutrient costs of vertebrate- and ant-dispersed fruits. Functional Ecology, 7: 54-62.
22. Huntly, N. (1991). Herbivores and the dynamics of communities and ecosystems. Annual Review Of Ecology and Systematics, 22: 477-504.
23. Jackson, T.P., Skinner, J.D. & Richardson, P.R.K. (1993). Some costs of maintaining a perennial territory in springbok, Antidorcas marsupialis. African Journal Of Ecology, 31: 242-254.
24. Janzen, D.H. (1984). Dispersal of small seeds by big herbivores: Foliage is the fruit. American Naturalist, 123: 338-353.
25. Kellmann, M. (1979). Soil enrichment by neotropical savanna trees. Journal Of Ecology, 67: 565-577.
26. Kennard, D.G. & Walker, B.H. (1973). Relationships between tree canopy cover and Panicum maximum in the vicinity of Fort Victoria. Rhodesian Journal Of Agricultural Research, 11: 145-153.
27. Leistner, O.A. (1961). On the dispersal of Acacia giraffae by game. Koedoe, 4: 101-104.
28. Leistner, O.A. (1967). The plant ecology of the southern kalahari. Memoirs Of The Botanical Survey Of South Africa, 38: 1-172.
29. Leistner, O.A. (1996). The subcanopy flora in the dynamics of the Kalahari Thornveld. In: van der Maesen, L.J.E., van der Burgt, X.M. & van Medenbach de Rooy, J.M. (Eds), The Biodiversity Of African Plants, Pp. 163-179. Dordrecht: Kluwer Academic Publishers. 880 pp.
30. Maclean, G.L. (1970). An analysis of the avifauna of the southern Kalahari Gemsbok National Park. Zoologica Africana, 5: 249-273.
31. Maclean, G.L. (1973). The sociable weaver. Parts 1-5. Ostrich, 44: 176-261.
32. Maclean, G.L. (1993). Roberts' Birds Of Southern Africa (6th Edn). Cape Town: John Voelcker Bird Book Fund. 871 pp.
33. Manders, P.T. & Richardson, D.M. (1992). Colonization of cape fynbos communities by forest species. Forest Ecological Management, 48: 277-293.
34. Milewski, A.V. (1982). The occurrence of seeds and fruits taken by ants versus birds in mediterranean Australia and southern Africa, in relation to the availability of soil potassium. Journal Of Biogeography, 9: 505-516.
35. Milton, S.J., Dean, W.R.J. & Marincowitz, C.P. (1992). Preferential utilization of pans by springbok (Antidorcas marsupialis). Journal Of The Grassland Society Of Southern Africa, 55: 259-266.
36. Moore, A., van Niekerk, J.P., Knight, I.W. & Wessels, H. (1985). The effects of tebuthiuron on the vegetation of the thorn bushveld of the northern Cape: A preliminary report. Journal Of The Grassland Society Of Southern Africa, 2: 7-10.
37. Muoghalu, J.I., Adeleye, O.M. & Balogun, R.T. (1994). Litter decomposition and inorganic element dynamics in a secondary rainforest. African Journal Of Ecology, 32: 208-221.
38. Nel, J.A.J. (1978). Notes on the food and foraging behaviour of the bat-eared fox, Otocyon megalotis. Bulletin Of The Carnegie Museum Of Natural History, 6: 132-136.
39. Perkins, J.S. & Thomas, D.S.G. (1993). Environmental responses and sensitivity to permanent cattle ranching, semi-arid western central Botswana. In: Thomas, D.S.G. & Allison, R.J. (Eds), Landscape Sensitivity, Pp. 273-286. London: John Wiley & Sons. 362 pp.
40. Pianka, E.R. & Huey, R.B. (1971). Bird species density in the Kalahari and the Australian deserts. Koedoe, 14: 123-129.
41. Roos, P.C. & Allsopp, N. (1997). Soil nutrient ecology associated with Acacia sieberana at different tree densities in a south african savanna. African Journal Of Range & Forage Science, 14: 39-44.
42. Scholes, R.J. (1990). The influence of soil fertility on the ecology of southern african dry savannas. Journal Of Biogeography, 17: 415-419.
43. Skarpe, C. (1991a). Spatial patterns and dynamics of woody vegetation in an arid savanna. Journal Of Vegetation Science, 2: 565-572.
44. Skarpe, C. (1991b). Impact of grazing in savanna ecosystems. Ambio, 20: 351-356.
45. Skinner, J.D. & Smithers, R.H.N. (1990). The Mammals Of The Southern African Subregion (2nd Edn). Pretoria: University of Pretoria. 769 pp.
46. Smith, T.M. & Goodman, P.S. (1986). The effect of competition on the structure and dynamics of Acacia savannas in southern Africa. Journal Of Ecology, 74: 1031-1044.
47. Smith, T.M. & Shackleton, S.E. (1988). The effects of shading on the establishment and growth of Acacia tortilis seedlings. South African Journal Of Botany, 54: 375-379.
48. Story, R. (1952). A botanical survey of the Keiskammahoek district. Memoirs Of The Botanical Survey Of South Africa, 27: 1-184.
49. Tietema, T., Tolsma, D.J., Veenendaal, E.M. & Schroten, J. (1991). Plant responses to human activities in the tropical savanna ecosystem of Botswana. In: Rozema, J. & Verkleij, J.A.C. (Eds), Ecological Responses to Environmental Stresses, Pp. 262-276. The Hague: Kluwer Academic Press. 336 pp.
50. Tinley, K.L. (1973). An Ecological Reconnaissance Of The Moremi Wildlife Reserve, Botswana. Johannesburg: Okovango Wildlife Society. 146 pp.
51. van der Walt, P.T. & le Riche, E.A.N. (1984). The influence of fire on an Acacia erioloba community in the Kalahari Gemsbok National Park. Koedoe, 27 (Suppl.): 103-106.
52. van Rooyen, T.H. (1984). The soils of the Kalahari Gemsbok National Park. Koedoe, 27 (Suppl.): 45-61.
53. van Wyk, A.J., Opperman, D.P.J. & Kok, O.B. (1985). Availability, quality and utilization of the riverine vegetation of the lower Kuiseb and canyon area. In: Huntley, B.J. (Ed.), The Kuiseb Environment: The Development Of A Monitoring Baseline. South African National Scientific Programmes Report, 106: 107-112.
54. Ward, D. & Rohner, C. (1997). Anthropogenic causes of high mortality and low recruitment in three Acacia tree taxa in the Negev desert, Israel. Biodiversity & Conservation, 6: 877-893.
55. Yeaton, R.I. & Manzanares, A.R. (1986). Organization of vegetation mosaics in the Acacia schaffneri-opuntia streptacantha association, southern Chihuahuan Desert, Mexico. Journal Of Ecology, 74: 211-217.