https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Application of environmental magnetism to trace sediment sources contributing to Kruger National Park reservoirs https://commons.ru.ac.za/vital/access/manager/Repository/vital:45269 Wed 23 Mar 2022 11:35:51 SAST ]]> Geomorphological connectivity and sensitivity examined in a recently degraded gravel-bed stream: implications for river-floodplain rehabilitation https://commons.ru.ac.za/vital/access/manager/Repository/vital:26313 Wed 12 May 2021 23:08:33 SAST ]]> Aquatic habitat shift assessment in a groundwater-fed semi-arid stream: an investigation into the response of Karoo hydroecology to system variability https://commons.ru.ac.za/vital/access/manager/Repository/vital:28072 Wed 12 May 2021 20:53:20 SAST ]]> A baseline survey of channel geomorphology with particular reference to the effects of sediment characteristics on ecosystem health in the Tsitsa River, Eastern Cape, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:27040 Wed 12 May 2021 18:33:38 SAST ]]> Developing a citizen technician based approach to suspended sediment monitoring in the Tsitsa River catchment, Eastern Cape, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:28211 Wed 12 May 2021 16:44:41 SAST ]]> An investigation into the performance of smallholder irrigation schemes in Limpopo Province, South Africa: success factors, typologies and implications for development https://commons.ru.ac.za/vital/access/manager/Repository/vital:30709 150% intensity) were old gravity schemes. Farmers on approximately 75% of Limpopo smallholder schemes are currently engaging in land exchange transactions in a highly insecure and un-formalised institutional setup. Land exchange prevalence longer than two years was moderately associated with cropping intensity and strongly associated with commercialisation. This result has three important implications. First, it suggests that more land is utilised on the schemes when there is vibrant land-leasing activity. Secondly, schemes with a higher prevalence of long-term leasing seem to have a strong tendency to be more commercialised. Thirdly, the duration of the lease is significant, as neither single-season, nor annual leases yielded any positive associations, while those exchanges that were two years or longer, were associated with increased performance. These findings highlight the potential for longer-term land-exchange interventions to address the widespread low land utilisation on smallholder schemes, and to catalyse more commercially-oriented farming. An irrigation scheme typology was derived from the cluster analysis and was aligned to a contemporary irrigation farming typology. The key descriptors included technology type, purpose of farming and scheme management type. By matching scheme type to the farmer typology (or typologies), strategic decisions regarding technology choices for infrastructure, land, and water institutional interventions can be better informed. All schemes demand attention to the multiple factors required to achieve performance, not least water-tenure security, irrigation management organisational development, and infrastructure modernisation. Complexity was demonstrated by the finding that multiple factors contribute to success, and that there are many dimensions that change independently and have a cascading effect through the system in ways that are difficult to predict. Agricultural systems support to achieve productivity and profitability are essential for success. The research findings lead to the recommendation that, in addition, strategic planners must also consider the implications of the dominant factors of water-technology choices so that these are manageable, and the dynamics of farm-size change based on land exchange processes, in order to harness new opportunities to maximise irrigation scheme performance in future.]]> Thu 13 May 2021 11:26:49 SAST ]]> Human-river relationships in the Kat River catchment and the implications for integrated water resource management (IWRM) : an exploraratory study https://commons.ru.ac.za/vital/access/manager/Repository/vital:4838 Thu 13 May 2021 05:38:18 SAST ]]> The suspended sediment yield and provenance of the Inxu River Catchment, Eastern Cape https://commons.ru.ac.za/vital/access/manager/Repository/vital:30010 Thu 13 May 2021 03:52:20 SAST ]]>