Stem mortality of Acacia nigrescens induced by the synergistic effects of elephants and fire in Kruger National Park, South Africa

Journal of Tropical Ecology

Volumn 24, Issue 6, 2008, Pages 655-662

  Moncrieff, Glenn R ^a   Kruger, Laurence M ^a,b   Midgley, Jeremy J ^a  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b Organization for Tropical Studies   (South Africa)

Author keywords

Acacia nigrescens; Bark removal; Elephant fire interactions; Fire; Loxodonta africana; Savanna; Stem mortality; Xylem

Indexed keywords

BARK; ELEPHANT; FIELD SURVEY; FIRE; LEGUME; MANAGEMENT PRACTICE; MORTALITY; NATIONAL PARK; PHLOEM; SAVANNA; STEM; SYNERGISM; VULNERABILITY; XYLEM;

AFRICA; KRUGER NATIONAL PARK; SOUTH AFRICA; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

ACACIA; ACACIA NIGRESCENS; ELEPHANTIDAE; LOXODONTA AFRICANA;

EID: 57349170231     PISSN: 02664674     EISSN: 14697831     Source Type: Journal    
DOI: 10.1017/S0266467408005476     Document Type: Article

References (31)

1. BALFOUR, D. A. & MIDGLEY, J. J. 2006. Fire induced stem death in an African acacia is not caused by canopy scorching. Austral Ecology 31:892-896.
2. BARNES, R. F. W. 1983. The elephant problem in Ruaha National Park, Tanzania. Biological Conservation 26:127-148.
3. BELSKY, A. J. 1994. Influences of trees on savanna productivity: tests of shade, nutrients, and tree-grass competition. Ecology 75:922-932.
4. BEN-SHAHAR, R. 1993. Patterns of elephant damage in vegetation in northern Botswana. Biological Conservation 65:249-256.
5. BEUCHNER, H. K. & DAWKINS, H. C. 1961. Vegetation change induced by elephants and fire in Murchison Falls National Park, Uganda. Ecology 42:752-766.
6. BOND, W. J. & VAN WILGEN, B.W. 1996. Fire and plants. Chapman & Hall, London. 276 pp.
7. BOVA, A. S. & DICKINSON, M. B. 2005. Linking surface-fire behaviour, stem heating, and tissue necrosis. Canadian Journal of Forest Research 35:814-822.
8. DEAN, W. R. J., MILTON, S. J. & JELTSCH, F. 1998. Large trees, fertile islands and birds inarid savanna. Journal of Arid Environments 41:61-78.
9. DUBLIN, H. T., SINCLAIR, A. R. E. & MCGLADE, J. 1990. Elephants and fire as causes of multiple stable states in the Serengeti-Mara woodlands. Journal of Animal Ecology 59:1147-1164.
10. ECKHARDT, H. C., VAN WILGEN, B. W. & BIGGS, H. C. 2000. Trends in woody vegetation cover in the Kruger National Park, South Africa, between 1940 and 1998. African Journal of Ecology 38:108-113.
11. GADD, M. E. 2002. The impact of elephants on the marula tree Sclerocarya birrea. African Journal of Ecology 40:328-336.
12. GERTENBACH, W. P. D. 1983. Landscapes of the Kruger National Park. Koedoe 26:9-21.
13. GIGNOUX, J., CLOBERT, J. & MENAUT, J. C. 1997. Alternative fire resistance strategies in savanna trees. Oecologia 110:576-583.
14. GILL, A. & ASHTON, D. 1968. The role of bark type in relative tolerance to fire of three central Victorian eucalypts. Australian Journal of Botany 16:491-498.
15. GUY, P. R. 1989. The influence of elephants and fire on a Brachystegia-Julbernardia woodland in Zimbabwe. Journal of Tropical Ecology 5:215-226.
16. HARE, R. C. 1965a. Contribution of bark to fire resistance of southern trees. Journal of Forestry 63:248-251.
17. HARE, R. C. 1965b. Bark surface and cambium temperatures in simulated forest fires. Journal of Forestry 63:437-440.
18. HIGGINS, S. I., BOND, W. J. & TROLLOPE, W. S. W. 2000. Fire, resprouting and variability: a recipe for grass-tree coexistence in savanna. Journal of Ecology 88:213-229.
19. HOFFMANN, W. A & SOLBRIG, O. T. 2003. The role of topkill in the differential response of savanna woody species to fire. Forest Ecology and Management 180:273-286.
20. HOLDO, R. 2005. Stem mortality following fire in Kalahari sand vegetation: effects of frost, prior damage, and tree neighbourhoods. Plant Ecology 180:77-86.
21. JONES, J. L., WEBB, B. W., BUTLER, B. W., DICKINSON, M. B., JIMENEZ, D., REARDON, J. & BOVA, A. S. 2006. Prediction and measurement of thermally induced cambial tissue necrosis in tree stems. International Journal of Wildland Fire 15:3-17.
22. LUDWIG, F., DE KROON, H., BERENDSE, F. & PRINS, H. T. T. 2004. The influence of savanna trees on nutrient, water and light availability and the understorey vegetation. Plant Ecology 170:93-105.
23. MACGREGOR, S. D. & O'CONNOR, T. G. 2004. Response of Acacia tortilis to utilization by elephants in a semi-arid African savanna. South African Journal of Wildlife Research 34:55-66.
24. PÉREZ, B. & MORENO, J. M. 1998. Methods for quantifying fire severity in shrubland-fires. Plant Ecology 139:91-101.
25. RUNDEL, P. W. 1973. The relationship between basal fire scars and crown damage in giant sequoia. Ecology 54:210-213.
26. SHANNON, G., DRUCE, D. J., PAGE, B. R., ECKHARDT, H, C., GRANT, R. & SLOTOW, R. 2008. The utilization of large savanna trees by elephant in southern Kruger National Park. Journal of Tropical Ecology 24:281-289.
27. TROLLOPE, W. S. W. 1984. Fire in savanna. Pp. 149-175 in Booysen, P. D. V. & Tainton, N. M. (eds.). Ecological effect of fire in South African ecosystems. Springer-Verlag, Berlin.
28. TYREE, M. T. & SPERRY, J. S. 1988. Vulnerability of xylem to cavitation and embolism. Annual Review of Plant Physiology and Plant Molecular Biology 40:19-36.
29. UHL, C. & KAUFFMAN, J. B. 1990. Deforestation, fire susceptibility, and potential tree responses to fire in the Eastern Amazon. Ecology 71:437-439.
30. VINES, R. G. 1968. Heat transfer through bark, and the resistance of trees to fire. Australian Journal of Botany 16:499-514.
31. YEATON, R. I. 1988. Porcupines, fires and the dynamics of the tree layer of the Burkea africana savanna. Journal of Ecology 76:1017-1029.