To Cull or Not to Cull: Lessons from a Southern African Drought

Walker, B. H.; Emslie, Richard; Owen-Smith, R. Norman; Scholes, R. J.

doi:10.2307/2403882

Cited by 195 publications

(141 citation statements)

References 4 publications

Supporting

Mentioning

139

Contrasting

Order By: Relevance

“…Translocation as a wildlife management tool has been widely applied during times of drought, but it would probably be of limited application under changed climate conditions since these will be characterized by a general drought condition (Walker et al 1987). Secondly, within Malawi, translocation could only be to an adjacent wildlife reserve (Mwabvi) capable of holding only a small translocated population.…”

Section: Summary and Adaptation Optionsmentioning

confidence: 99%

“…Provision of artificial water supplies would help alleviate the impacts of water deficits if applied as an anticipatory adaptation measure (Walker et al 1987). This could reduce access of animals to water.…”

Section: Summary and Adaptation Optionsmentioning

confidence: 99%

“…Studying impacts of droughts on some conservation areas in southern Africa, Walker et al (1987) asserted that culling was ecologically unnecessary where sufficient spatial heterogeneity existed to provide reserve forage. The GCM scenarios analyzed in thls study imply that water deficits would be continuous.…”

Section: Summary and Adaptation Optionsmentioning

confidence: 99%

See 2 more Smart Citations

Potential impacts of future climate change on nyala Tragelaphus angasi in Lengwe National Park, Malawi

Fx¹

1996

Clim. Res.

View full text Add to dashboard Cite

General Circulation Models (GCMs) were used to develop climate change scenarios for the Lengwe National Park in Malawi Scenanos of future precipitation and ambient temperature were in turn used to evaluate habitat suitabihty of 5 ungulate populations and to rank their vulnerabihty to global climate change in the park Preliminary results suggest that ambient temperatures may n s e with a doubling of atmospheric COz, and precipitation will be more vanable The vulnerability assessment results suggest that all the ungulates, especially nyala antelope Tragelaphus angasi, could be highly susceptible to climate induced changes in habitat and food supply Adaptive measures, such as translocation, culling, and expanding the water supply, may alleviate climatic change impacts on nyala and other ungulates

show abstract

Section: Summary and Adaptation Optionsmentioning

confidence: 99%

Section: Summary and Adaptation Optionsmentioning

confidence: 99%

See 1 more Smart Citation

Potential impacts of future climate change on nyala Tragelaphus angasi in Lengwe National Park, Malawi

Fx¹

1996

Clim. Res.

View full text Add to dashboard Cite

show abstract

“…Kamvazina (1981) reported that the drought of 1980 resulted in poor regeneration of vegetation and nyala Tragelaphus angasi Gray mortality in Lengwe National Park, Malawi. Similar effects of the drought occurred in wildlife conservation areas in Botswana and South Africa (Walker et al 1987) and in Zimbabwe (Magadza 1994).…”

Section: Introductionmentioning

confidence: 62%

Drought as an analogue climate change scenario for prediction of potential impacts on Malawi's wildlife habitats

Mkanda¹

1999

Clim. Res.

View full text Add to dashboard Cite

This study compares precipitation and temperature from recent drought episodes with general circulation model outputs to examine the likely effects of climate change on herbaceous layer productivity, ground cover, and forage utilization in Malawi's Lengwe National Park. There are no differences in precipitation distribution and temperature during the drought episodes and climate change scenarios. The implication is that deteriorating habitat conditions such as those observed during the drought incidents might occur under climate change. Herbacious layer productivity was 2 to 6 times lower than in a normal year; ground cover was reduced to 22-32%; and the number of intensely browsed plants increased significantly (chi-square = 10.5, p = 0.01) as the drought progressed. Consequently, it is unlikely that the degraded habitat would support large mammal populations in Lengwe specifically, or in Malawi in general.

show abstract

“…Others suggest that the distance between drinkable water sources should not exceed 3.2 km (BCMAL Fact sheet 2004). In either scenario, during drought, the effective grazing area is increased as forage supply diminishes (Squires 1982, Walker et al 1987, Smith 1988. Also, rough terrain, such as gullies, steep slopes, and/or rocky outcrops, restricts animal movements even when water sources are within otherwise acceptable distances (Stuth 1991 (Sampson 1919, Berry 1973, Perala 1979.…”

Section: The Landscape Level Diet Selectionmentioning

confidence: 99%

Integrating production functions of timber, forage, and cattle to achieve sustainable resource management.

Bondaroff¹

View full text Add to dashboard Cite

To Cull or Not to Cull: Lessons from a Southern African Drought

Cited by 195 publications

References 4 publications

Potential impacts of future climate change on nyala Tragelaphus angasi in Lengwe National Park, Malawi

Potential impacts of future climate change on nyala Tragelaphus angasi in Lengwe National Park, Malawi

Drought as an analogue climate change scenario for prediction of potential impacts on Malawi's wildlife habitats

Integrating production functions of timber, forage, and cattle to achieve sustainable resource management.

Contact Info

Product

Resources

About