A 'large infrequent disturbance' in an East African savanna

African Journal of Ecology

Volumn 44, Issue 4, 2006, Pages 458-467

  Gillson, Lindsey ^a  

^a UNIVERSITY OF OXFORD   (United Kingdom)

Author keywords

Charcoal; Drought; Fire; Pollen; Rinderpest; Threshold

Indexed keywords

CHARCOAL; DATA SET; DROUGHT; HISTORICAL RECORD; NINETEENTH CENTURY; PALEOECOLOGY; SAVANNA; SEDIMENT; STATISTICAL CONCEPT;

AFRICA; EAST AFRICA; SUB-SAHARAN AFRICA;

BOS TAURUS;

EID: 33751291229     PISSN: 01416707     EISSN: 13652028     Source Type: Journal    
DOI: 10.1111/j.1365-2028.2006.00662.x     Document Type: Article

References (45)

1. APPLEBY, P. & OLDFIELD, F. (1978) The calculation of 210Pb dates assuming a constant rate of supply of unsupported 210Pb to the sediment. Catena 5, 1-8.
2. BELSKY, A. (1995) Spatial and temporal landscape patterns in arid and semi-arid African savannas. In: Mosaic Landscapes and Ecological Processes (Eds L. HANSSON, L. FAHRIG and G. MERRIAM). Chapman and Hall, London.
3. BEN-SHAHAR, R. (1998) Changes in structure of savanna woodlands in northern Botswana following the impacts of elephants and fire. Plant Ecol. 136, 189-194.
4. BENNETT, K.D. (1996) Determination of the number of zones in a biostratigraphical sequence. New Phytol. 132, 155-170.
5. BENNETT, K.D. (1998) Psimpoll 4.25. http://www.kv.geo.uu.se/psimpoll. html.
6. BENNETT, K.D. & WILLIS, K.J. (2001) Pollen. In: Tracking Environmental Change using Lake Sediments (Eds J. P. SMOL, H. J. B. BIRKS and W. M., LAST). Kluwer, Dordrecht.
7. BENNION, M., HELEN, M. & APPLEBY, P. (1999) An assessment of recent environmental change in Llangorse Lake using palaeolimnology. Aquat. Conserv. Mar. Freshw. Ecosyst. 9, 361-375.
8. BERGLUND, B. E. (Ed.) (1986) Handbook of Paleoecology and Paleohydrology. John Wiley, New York. 869 pp.
9. BIRKS, H.J.B. & GORDON, A.D. (1985) Numerical Methods in Quaternary Pollen Analysis. Academic Press Inc., London.
10. BONNEFILLE, R. (1971) Atlas des pollens d'Éthiopie principales espéces des forêts de montagne. Pollen et Spores XIII, 15-72.
11. BONNEFILLE, R. & RIOLLET, G. (1980) Pollens des savannes d'Afrique Orientale. Centre National de la Recherche Scientifique, Paris.
12. BROCKINGTON, D. (2002) Fortress Conservation. The Preservation of the Mkomazi Game Reserve, Tanzania. James Currey, Oxford.
13. van CAMPO, M. (1960) Palynologie africaine, IV. Bull. Inst. fr. Afrique noire XXII, sér. A, 1165-1199.
14. CLARK, R.L. (1982) Point count estimation of charcoal in pollen preparations and thin sections of sediments. Pollen et Spores XXIV, 523-535.
15. D'ODORICO, R.-I.a.P. (1999) Tree-grass coexistence in savannas: the role of spatial dynamics and climate fluctuations. Geophys. Res. Lett. 26, 246-250.
16. DUBLIN, H.T. (1995) Vegetation dynamics in the Serengeti-Mara ecosystem: the role of Elephants, fire and other factors. In: Serengeti II: Dynamics, Management and Conservation of an Ecosystem (Eds A. R. E. SINCLAIR and P. ARCESE). University of Chicago Press, Chicago and London.
17. DUBLIN, H., SINCLAIR, A. & MCGLADE, J. (1990) Elephants and fire as causes of multiple stable states in the Serengeti-Mara woodlands. J. Anim. Ecol. 59, 1147-1164.
18. FAGERLIND, F. (1952) The real significance of pollen diagrams. Botanisker Notiser 105, 185-224.
19. FOSTER, D.R., KNIGHT, D.H. & FRANKLIN, J.F. (1998) Landscape patterns and legacies resulting from large, infrequent disturbances. Ecosystems 1, 497-510.
20. GILLSON, L. (2004) Testing non-equilibrium theories in savannas: 1400 years of vegetation change in Tsavo National Park, Kenya. Ecol. Complex. 1, 281-298.
21. GLOVER, P. (1968) The role of fire and other influences on Savannah habitat, with suggestions for further research. East Afr. Wildl. J. 6, 131-137.
22. HAMILTON, A. (1982) Environmental History of East Africa. Academic Press, London.
23. HILLIARD, J.E. & CAHN, J.W. (1961) An evaluation of procedures in quantitative metallography for volume-fraction analysis. Trans. Metall. Soc. Am. Inst. Min. Metall. Petrol. Eng. 221, 344-352.
24. HOFFMAN, W.A.R.J. (2000) Vegetation-climate feedbacks in the conversion of tropical Savanna to Grassland. J. Clim. 13, 1593-1603.
25. JACKSON, D.A. (1993) Stopping rules in principal components analysis: a comparison of heuristical and statistical approaches. Ecology 77, 2204-2214.
26. LEUTHOLD, W. (1996) Recovery of woody vegetation in Tsavo National Park, Kenya 1970-1994. Afr. J. Ecol. 24, 101-112.
27. LINDEMANN, J.D. & BAKER, W.L. (2001) Attributes of blowdown patches from a severe wind event in the Southern Rocky Mountains, USA. Landsc. Ecol. 16, 313-325.
28. MAHER, L. (1972) Nomograms for computing the 0.95 confidence limits of pollen data. Rev. Palaeobot. Palynol. 13, 95-214.
29. NAPIER-BAX, P. & SHELDRICK D. (1963) Some preliminary observations on the food of elephant in the Tsavo Royal National Park (East) in Kenya. East Afr. Wildl. J. 1, 40-53.
30. NICHOLSON, S.E. (1998) Historical fluctuations of Lake Victoria and other lakes in the Northern Rift Valley of East Africa. In: Environmental Change and Response in East African Lakes (Eds J. T. LEHMAN). Kluwer Academic Publisher, Dordrecht.
31. NICHOLSON, S.E. (2001) Climatic and environmental change in Africa during the last two centuries. Clim. Res. 17, 123-144.
32. OFCANSKY, T.P. (1981) The 1889-1897 rinderpest epidemic and the rise of British and German colonialism in eastern and southern Africa. J. Afr. Stud. 8, 31-38.
33. PEARCE, F. (2000) Inventing Africa. New Sci. 2251, 30-33.
34. RESH, V.H., BROWN, A.V., COVICH, A.P., GURTZ, M.E., LI, H.W., MINSHALL, G.W., REICE, S.R., SHELDON, A.L., WALLACE, J.B. & WISSMAR, R.C. (1988) The role of disturbance in stream ecology. J. North Am. Benthol. Soc. 7, 433-455.
35. ROMME, W.H., EVERHAM, E.H., FRELICH, F.L., MORTIZ, M.A. & SPARKS, R.E. (1998) Are large, infrequent disturbances qualitatively different from small, frequent disturbances? Ecosystems 1, 524-534.
36. SCHOLES, R. & WALKER, B. (1993) An African Savannah: Synthesis of the Nylsvley Study. Cambridge University Press, Cambridge.
37. SOWUNMI, A.S. (1995) Pollen of Nigerian plants. Grana 34, 121-141.
38. TALBOT, M.R. & LIVINGSTONE, D.A. (1989) Hydrogen index and carbon isotopes of lacustrine organic matter as lake level indicators. Palaeogeogr. Palaeoclimatol. Palaeoecol. 70, 121-137.
39. TURNER, M.G. & VALE, V.H. (1998) Comparing large, infrequent disturbances: what have we learned? Ecosystems 1, 493-496.
40. TURNER, M.G., BAKER, W.L., PETERSON, C.J. & PEET, R.K. (1998) Factors influencing succession: lessons from large, infrequent natural disturbances. Ecosystems 1, 511-523.
41. TURNER, M.G., COLLINS, S.L., LUGO, A.L., MAGNUSON, J.J., RUPP, T.S. & SWANSON, F.J. (2003) Disturbance dynamics and ecological response: the contribution of long-term ecological research. BioScience 53, 46-56.
42. VERSCHUREN, D., LAIRD, K.R. & CUMMING, B.F. (2000) Rainfall and drought in equatorial east Africa during the past 1,100 years. Nature 403, 410-414.
43. VETTER, S. (2005) Rangelands at equilibrium and non-equilibrium: recent developments in the debate. J. Arid Environ. 62, 321-341.
44. WALLER, R. (1988) Emutai: crisis and response in Maasailand 1883-1902. In: The Ecology of Survival. Case Studies from Northeast African History (Eds D. JOHNSON and D. ANDERSON). Lester Crook Academic Publishing, London.
45. WIJNGAARDEN, W.V. (1985) Elephants-Trees-Grass-Grazers; Relationships between Soil, Vegetation and Large Herbivores in a Semi-Arid Ecosystem (Tsavo, Kenya). ITC Publication, Enschende, Netherlands 4. 159 pp.