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Browsing by Subject "Ecosystem services"

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Alien plant invasions in South Africa: driving forces and the human dimension

Author: Le Maitre, David C ; Richardson, DM ; Chapman, RA Date: Jan 2004 Invasive alien plants pose a substantial threat to the rich biodiversity of South Africa, and to the sustained delivery of a wide range of ecosystem services. Biological invasions are driven by human activities and mediated by culturally ... Read more
An assessment of the effectiveness of a large, national-scale invasive alien plant control strategy in South Africa

Author: Van Wilgen, BW ; Forsyth, GG ; Le Maitre, David C ; Wannenburgh, A ; Kotzé, JDF ; Van den Berg, E ; Henderson, L Date: Apr 2012 This paper presents an assessment of a large, national-scale alien plant control program that has operated in South Africa for 15 years. We reviewed data from three national-level estimates of the extent of invasion, records of the costs and ... Read more
Biodiversity and Ecosystem Services on the African continent – what is changing, and what are our options?

Author: Archer, E ; Dziba, LE ; Mulongoy, KJ ; Maoela, Malebajoa A ; Walters, Michele ; Biggs, R ; Cormier Salem, M-C ; DeClerck, F ; Diaw, MC ; Dunham, AE Date: Mar 2021 Throughout the world, biodiversity and nature's contributions to people are under threat, with clear changes evident. Biodiversity and ecosystem services have particular value in Africa– yet they are negatively impacted by a range of drivers, ... Read more
Biofuels in Africa: Impacts on ecosystem services, biodiversity and human well-being

Author: Gasparatos, A ; Lee, LY ; Von Maltitz, Graham P ; Mathai, MV ; Puppim de Oliveira, JA ; Willis, KJ Date: 2012 Biofuels are a type of fuels derived from solid biomass through different chemical and biological processes. Currently, liquid biofuels (e.g. bioethanol and biodiesel) produced from edible plants or animal fats are by far the most popular ... Read more
Commercial forestry

Author: Naidoo, Sasha Date: Oct 2017 Forests in southern Africa are critically important for sustainable livelihoods and ecosystems but are vulnerable to changes in climate, most important being accumulated temperature and moisture deficit, as well as to other external stressors, ... Read more
Conceptual risk assessment framework for global change risk analysis SRP

Author: Elphinstone, CD ; Das, Sonali ; Khuluse, S Date: Dec 2007 This report is submitted as a deliverable of the SRP project Global Change Risk Analysis which aims at applying risk analysis as a unifying notion for quantifying and communicating threats to ecosystem services originating from global change ... Read more
Costs and benefits of biological control of invasive alien plants in South Africa

Author: Van Wilgen, BW ; De Lange, Willem J Date: Aug 2011 This paper provides a brief review of the environmental and economic costs of invasive alien plants in South Africa as a background to assessments of returns on investment in weed biological control. The understanding of impacts and their ... Read more
Drivers and barriers towards sustainable water and land management in the Olifants-Doorn Water Management Area, South Africa

Author: Knüppe, K ; Meissner, Richard Date: Nov 2016 Over the last 17 years South Africa's water and land resources management has changed dramatically. This rapid evolution has been accompanied by a growing number of laws and policies to co-balance water allocation for human basic needs and ... Read more
Ecological economic simulation model of mountain fynbos ecosystems - dynamics, valuation and management

Author: Higgins, SI ; Turpie, JK ; Costanza, R ; Cowling, RM ; Le Maitre, David C ; Marais, C ; Midgley, GF Date: Aug 1997 Mountain fynbos ecosystems in South Africa are threatened by alien plant invasions and by a lack of funding for effective management of these invasions. This paper develops an ecological-economic argument for the effective management of plant ... Read more
Ecological Reserve: Towards a common understanding for river management in South Africa

Author: Van Wyk, E ; Breen, CM ; Roux, DJ ; Rogers, KH ; Sherwill, T ; Van Wilgen, BW Date: Jul 2006 The legal requirement for an Ecological Reserve established in South Africa’s water law is commonly regarded by stakeholders as being in direct competition with the needs of humans. This has resulted in much debate and varying interpretations ... Read more
The economics of landscape restoration: Benefits of controlling bush encroachment and invasive plant species in South Africa and Namibia

Author: Stafford, William HL ; Birch, C ; Etter, H ; Blanchard, Ryan ; Mudavanhu, S ; Angelstam, P ; Blignaut, J ; Ferreira, L ; Marais, C Date: Jan 2017 Bush encroachment and alien plant invasions alter the composition and/or balance of species in natural ecosystems and impact biodiversity, land productivity and water availability. Therefore, the appropriate control and management of bush ... Read more
Ecosystem services, efficiency, sustainability and equity: South Africa's Working for Water Programme

Author: Van Wilgen, BW ; Le Maitre, David C ; Cowling, RM Date: Sep 1998 In this paper, South Africa’s working for water programme is described. The programme maximizes an ecosystem services (the delivery of water), enhances sustainability by eliminating invading alien plants, and promotes social equity through ... 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
Future ecosystem services in a Southern African river basin: a scenario planning approach to uncertainty

Author: Bohensky, EL ; Reyers, B ; Van Jaarsveld, AS Date: Aug 2006 Scenario planning is a promising tool for dealing with uncertainty, but it has been underutilized in ecology and conservation. The use of scenarios to explore ecological dynamics of alternative futures has been given a major boost by the ... Read more
Hydrological responses of a valley-bottom wetland to land-use/land-cover change in a South African catchment: making a case for wetland restoration

Author: Rebelo, AJ ; Le Maitre, David C ; Esler, KJ ; Cowling, RM Date: Nov 2015 Valley-bottom wetlands are valuable assets as they provide many ecosystem services to mankind. Despite their value, valley-bottom wetlands are often exploited and land-use/land-cover (LULC) change results in trade-offs in ecosystem services. ... Read more
Linking ecosystem services and water resources: landscape-scale hydrology of the Little Karoo

Author: Le Maitre, David C ; Milton, SJ ; Jarmain, C ; Colvin, C ; Saayman, I ; Vlok, JHJ Date: Jul 2007 There is growing acknowledgement of the dependence of human society on ecosystem services and of the fact that service delivery is being compromised by human impacts on ecosystems. This paper describes the linkage between landscape-scale ... Read more
Local benefits of retaining natural vegetation for soil retention and hydrological services

Author: O'Farrell, Patrick J ; Donaldson, JS ; Hoffman, MT Date: Aug 2009 Renosterveld is a grassy shrubland with a diverse understory of geophytes. Exceptional plant diversity and endemism, combined with considerable fragmentation due to transformation to cropland, make this vegetation type a conservation priority. ... Read more
Managing urban plant invasions: A multi-criteria prioritization approach

Author: Potgieter, LJ ; Gaertner, M ; Irlich, UM ; O’Farrell, Patrick J ; Stafford, L ; Vogt, H ; Richardson, DM Date: Dec 2018 Alien plant invasions in urban areas can have considerable impact on biodiversity and ecosystem services (ES). Managing urban plant invasions is particularly challenging given the complex interactions between ecological, economic and social ... Read more
Measuring conditions and trends in ecosystem services at multiple scales: the Southern African millennium ecosystem assessment (SAFMA) experience

Author: Van Jaarsveld, AS ; Biggs, R ; Scholes, RJ ; Bohensky, E ; Reyers, B ; Lynam, T ; Musvoto, Constansia D ; Fabricius, C Date: Jan 2005 The Southern African Millennium Ecosystem Assessment (SAfMA) evaluated the relationships between ecosystem services and human well-being at multiple scales, ranging from local through to sub-continental. Trends in ecosystem services (fresh ... Read more
Methodological and empirical considerations when assessing freshwater ecosystem service provision in a developing city context: Making the best of what we have

Author: Brill, G ; Anderson, P ; O’Farrell, Patrick Date: May 2017 This study contributes to both the methodological and empirical literature by developing an integrative approach to assessing temporal and spatial change in riparian ecosystem service delivery by drawing on available and diverse data sets. ... Read more

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