Shrinking sable antelope numbers in Kruger National Park: What is suppressing population recovery?

Animal Conservation

Volumn 15, Issue 2, 2012, Pages 195-204

  Owen Smith, N ^a   Chirima, G J ^a   Macandza, V ^a   Le Roux, E ^a  

^a UNIVERSITY OF THE WITWATERSRAND   (South Africa)

Author keywords

Allee effect; Drought impacts; Herd size effects; Hippotragus niger; Kruger National Park; Population extirpation; Predation; Range contraction

Indexed keywords

ALLEE EFFECT; DROUGHT; POPULATION DECLINE; POPULATION DISTRIBUTION; POPULATION GROWTH; POPULATION SIZE; PREDATION; RANGE EXPANSION; UNGULATE;

KRUGER NATIONAL PARK; SOUTH AFRICA;

EQUUS SUBG. HIPPOTIGRIS; HIPPOTRAGUS; HIPPOTRAGUS NIGER;

EID: 84859267158     PISSN: 13679430     EISSN: 14691795     Source Type: Journal    
DOI: 10.1111/j.1469-1795.2011.00504.x     Document Type: Article

References (33)

1. Bourbeau-Lemieux, A., Festa-Bianchet, M., Gaillard, J.-M. & Pelletier, F. (2011). Predator-driven component Allee effects in a wild ungulate. Ecol. Lett. 14, 358-363.
2. Courchamp, F., Clutton-Brock, T.H. & Grenfell, B. (1999). Inverse density dependence and the Allee effect. Trends Ecol. Evol. 14, 405-410.
3. Dennis, B. (1989). Allee effects: population growth, critical density, and the chance of extinction. Nat. Res. Model. 3, 481-538.
4. Eckhardt, H.C., van Wilgen, B.W. & Biggs, H.C. (2000). Trends in woody vegetation cover in Kruger National Park, South Africa, between 1940 and 1998. Afr. J. Ecol. 38, 108-115.
5. Estes, R. (1991). The behaviour guide to African mammals. Berkeley: University of California Press.
6. Ferreira, S.M. & Funston, P.J. (2010). Estimating lion population variables: prey and disease effects in Kruger National Park, South Africa. Wildl. Res. 37, 194-206.
7. Fryxell, J.M., Mosser, A., Sinclair, A.R.E. & Packer, C. (2007). Group formation stabilizes predator-prey dynamics. Nature 449, 1041-1044.
8. Funston, P.J., Mills, M.G.L., Biggs, H.C. & Richardson, P.K.R. (1998). Hunting by male lions: ecological influences and sociological implications. Anim. Behav. 56, 1333-1345.
9. Getz, W.M. & Wilmers, C. (2004). A local nearest-neighbor convex-hull construction of home ranges and utilization distributions. Ecography 27, 498-505.
10. Getz, W.M., Fortmann-Roe, S., Cross, P.C., Lyons, A.J., Ryan, S.J. & Wilmers, C.C. (2007). LoCoH: nonparametric kernel methods for constructing home ranges and utilization distributions. PLoS ONE 2, 1-11.
11. Harrington, R., Owen-Smith, N., Viljoen, P.C., Biggs, H.C., Mason, D.R. & Funston, P. (1999). Establishing the causes of roan antelope decline in the Kruger National Park, South Africa. Biol. Conserv. 90, 69-78.
12. Jarman, P.J. (1974). The social organization of antelope in relation to their ecology. Behaviour 48, 215-267.
13. Kennedy, A.D., Biggs, H. & Zambatis, N. (2003). Relationship between grass species richness and ecosystem stability in Kruger National Park, South Africa. Afr. J. Ecol. 41, 131-140.
14. McCarthy, M.A. (1997). The Allee effect, finding mates and theoretical models. Ecol. Model. 103, 99-102.
15. McKinney, N.L. & Lockwood, J.L. (1999). Biotic homogenization: a few winners replacing many losers in the next mass extinction. Trends Ecol. Evol. 14, 450-453.
16. McLellan, B.N., Serrouya, R., Wittmer, H.U. & Boutin, S. (2010). Predator-mediated Allee effects in multi-prey systems. Ecology 91, 286-292.
17. McLoughlin, C.A. & Owen-Smith, N. (2003). Viability of a diminishing roan antelope population: predation is the threat. Anim. Conserv. 6, 231-236.
18. Ogutu, J.O. & Owen-Smith, N. (2003). ENSO, rainfall and temperature influences on extreme population declines among African savanna ungulates. Ecol. Lett. 6, 412-419.
19. Owen-Smith, N. & Mason, D.R. (2005). Comparative changes in adult versus juvenile survival affecting population trends of African ungulates. J. Anim. Ecol. 74, 762-773.
20. Owen-Smith, N. & Mills, M.G.L. (2006). Manifold interactive influences on the population dynamics of a multispecies ungulate assemblage. Ecol. Monogr. 76, 73-92.
21. Owen-Smith, N. & Mills, M.G.L. (2008). Shifting prey selection generates contrasting herbivore dynamics within a large-mammal predator-prey web. Ecology 89, 1120-1133.
22. Owen-Smith, N., Mason, D.R. & Ogutu, J.O. (2005). Correlates of survival rates for ten African ungulate populations: density, rainfall and predation. J. Anim. Ecol. 74, 774-788.
23. Pienaar, U.deV. (1970). Water resources of the Kruger National Park. Afr. Wild Life 24, 181-193.
24. Rahimi, S. & Owen-Smith, N. (2007). Movement patterns of sable antelope in the Kruger National Park from GPS/GSM collars: a preliminary analysis. S. Afr. J. Wildl. Res. 37, 143-151.
25. Redfern, J.V., Viljoen, P.C., Kruger, J.M. & Getz, W.M. (2002). Biases in estimating population size from aerial census: a case study in the Kruger National Park, South Africa. S. Afr. J. Sci. 98, 455-461.
26. Sinclair, A.R.E., Pech, R.P., Dickman, C.R., Hik, D., Mahon, P. & Newsome, A.E. (1998). Predicting effects of predation on conservation of endangered prey. Conserv. Biol. 12, 564-575.
27. Skinner, J.D. & Chimimba, C.T. (2005). The mammals of the southern African subregion. 3rd edn. Cambridge: Cambridge University Press.
28. Smit, I.P.J. & Grant, C.C. (2010). Managing surface-water sources in a large semi-arid savanna park: effects of grazer distribution patterns. J. Nat. Cons. 17, 61-71.
29. Stephens, P.A. & Sutherland, W.J. (1999). Consequences of the Allee effect for behaviour, ecology and conservation. Trends Ecol. Evol. 14, 401-405.
30. Trollope, W.S.W., Trollope, L.A., Biggs, H.C., Pienaar, D. & Potgieter, A.L.F. (1998). Long-term changes in the woody vegetation of the Kruger National Park, with special reference to the effects of elephants and fire. Koedoe 41, 103-112.
31. Venter, F.J., Scholes, R.J. & Eckhardt, H.C. (2003). The abiotic template and its associated vegetation pattern. In The Kruger experience: ecology and management of savanna heterogeneity: 82-129. du Toit, J.T., Rogers, K.H. & Biggs, H.C. (Eds). Washington, DC: Island Press.
32. Viljoen, P.C. & Retief, P.F. (1994). The use of the Global Positioning System for real-time data collected during ecological aerial surveys in the Kruger National Park, South Africa. Koedoe 37, 183-189.
33. Whyte, I.J. (2006). Rare antelope in the Kruger National Park: trends, current status, and options for future management. Scientific Report 01/2006. South African National Parks, Skukuza.