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Alien tree invasion into a South African montane grassland ecosystem: impact of Acacia species on rangeland condition and livestock carrying capacity

Author: Yapi, Thozamile S ; O’Farrell, Patrick J ; Dziba, Luthando E ; Esler, KJ Date: Mar 2018 The degree to which invasive Acacia species affect South Africa’s livestock production has received little attention. We investigated the ecological impacts of Acacia mearnsii invasion on forage quality and quantity and on soil resources, ... Read more
Assessing the impacts of Acacia mearnsii on grazing provision and livestock production

Author: Yapi, T ; O'Farrell, P ; Dziba, L ; Esler, K Date: Oct 2012 In this presentation the author shares some of his MSc research findings to highlight the effects of Acacia mearnsii density and clearing on grazing provision and related resources. Read more
Assessing the impacts of Acacia mearnsii (black wattle) on grazing provision and livestock production in South Africa

Author: Yapi, T ; O'Farrell, Patrick J ; Dziba, LE ; Esler, K Date: Oct 2012 The central aim of this research is to develop a deeper understanding of the ecological impacts of A. mearnsiiinvasions on the functioning and productivity of rangelands in South Africa and their ability to sustain livestock production. Read more
Costs, benefits and management options for an invasive alien tree species: the case of mesquite in the Northern Cape, South Africa

Author: Wise, RM ; Van Wilgen, BW ; Le Maitre, David C Date: Aug 2012 Mesquite (Prosopis species) were introduced to South Africa to provide fodder and shade for livestock, but some have become invasive, impacting on water and grazing resources. Mesquite’s net economic effects are unclear and their unequal ... Read more
Economic assessment of the contribution of biological control to the management of invasive alien plants and to the protection of ecosystem services in South Africa

Author: De Lange, Willem J ; Van Wilgen, BW Date: Jul 2010 This study is a first attempt at a holistic economic evaluation of South African endeavours to manage invasive alien plants using biological control. The author’s focus was on the delivery of ecosystem services from habitats that are invaded ... Read more
Ecosystem services, land-cover change, and stakeholders: finding a sustainable foothold for a semiarid biodiversity hotspot

Author: Reyers, B ; O'Farrell, Patrick J ; Cowling, RM ; Egoh, Benis N ; Le Maitre, David C ; Vlok, JHJ Date: 2009 Land-cover change has been identified as one of the most important drivers of change in ecosystems and their services. However, information on the consequences of land cover change for ecosystem services and human well-being at local scales ... Read more
Multi-functional landscapes in semi arid environments: implications for biodiversity and ecosystem services

Author: O'Farrell, Patrick J ; Reyers, B ; Le Maitre, David C ; Milton, SJ ; Egoh, Benis N ; Maherry, A ; Colvin, C ; Atkinson, D ; De Lange, Willem J ; Blignaut, JN ; Cowling, RM Date: Jun 2010 Synergies between biodiversity conservation objectives and ecosystem service management were investigated in the Succulent Karoo biome (83,000 km2) of South Africa, a recognised biodiversity hotspot. Our study complemented a previous biodiversity ... Read more
Relevance of rangeland degradation in semiarid Northeastern South Africa to the nonequilibrium theory

Author: Wessels, Konrad J ; Prince, SD ; Carroll, M ; Malherbe, Johan Date: Apr 2007 According to the nonequilibrium theory, livestock grazing has a limited effect on long-term vegetation productivity of semiarid rangelands, which is largely determined by rainfall. The communal lands in northeastern South Africa contain ... Read more
Seasonal forecasts for the Limpopo Province in estimating deviations from grazing capacity

Author: Maluleke, P ; Landman, WA ; Malherbe, Johan ; Archer, Emma RM Date: Nov 2018 Application of seasonal forecasts in agriculture has significant potential and realized utility. Other sectors that may also benefit from using seasonal forecasts include (but are not limited to) health, hydrology, water, and energy. This ... Read more

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Browsing by Subject "Grazing"

Browsing by Subject "Grazing"

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