Your search found 10 records
1 Bossio, Deborah; van der Zaag, P.; Jewitt, G.; Mahoo, H. (Eds.) 2011. Smallholder system innovation for integrated watershed management in Sub-Saharan Africa. Agricultural Water Management, 98(11):1683-1773. (Special issue on "Smallholder systems innovations for integrated watershed management in Sub-Saharan Africa" with contributions by IWMI authors).
Watershed management ; Smallholders ; Farmers ; Yields ; Tillage ; Farming systems ; Dry farming ; Rainfed farming ; Case studies ; Water productivity ; Water allocation ; Water use ; Simulation models ; Grasslands ; Sloping land ; Land degradation ; Spate irrigation ; Satellite imagery ; River basins / Africa South of Sahara / South Africa / Tanzania / KwaZulu-Natal / Makanya catchment / Thukela River Basin / Pangani River Basin / South Pare Mountains
(Location: IWMI HQ Call no: PER Record No: H044307)
2 Bossio, Deborah; Jewitt, G.; van der Zaag, P. 2011. Smallholder system innovation for integrated watershed management in Sub-Saharan Africa. Editorial. Agricultural Water Management, 98(11):1683-1686. (Special issue on "Smallholder systems innovations for integrated watershed management in Sub-Saharan Africa" with contributions by IWMI authors). [doi: https://doi.org/10.1016/j.agwat.2011.07.00]
Watershed management ; Smallholders ; Farmers ; Crop yield ; Crop production ; Rainfed farming ; Environmental effects ; Governance ; Land degradation / Africa South of Sahara / Semi-Arid Savannah Zones
(Location: IWMI HQ Call no: PER Record No: H044310)
(0.19 MB)
3 Jewitt, G.; Kunz, R. 2011. The impact of biofuel feedstock production on water resources: a developing country perspective. Biofuels, Bioproducts and Biorefining, 5(4):387-398.
Bioenergy ; Biofuels ; Feedstocks ; Water resources ; Water management ; Developing countries ; Environmental flows ; Water use ; Water users ; Land use / Africa South of Sahara
(Location: IWMI HQ Call no: e-copy only Record No: H044736)
(0.57 MB)
Worldwide, the demand for energy has grown rapidly over the past decade, resulting in oil prices peaking during 2008 and again in 2011. Utilizing the potential for the production of fuels from alternative sources has been a priority for many countries, particularly the developed countries of Europe and America. The production of ethanol and diesel from vegetable biomass and oils, (i.e. biofuels) has been promoted as an environmentally friendly alternative to oil-based fuels. However, many have warned against the rush to plant large areas of land for bioenergy production, warning against, inter alia, potential consequences for loss of food production, questions about the sustainability of many initiatives and, very importantly, queries about the water use of bioenergy production, from the crop growth to the fi nal synthesis of the liquid fuel and the inputs required. Many analyses of biofuel feedstock production potential are undertaken at macro levels, based on average conditions. However, the reality is that in many developing countries, particularly those of Africa, consideration of biofuel production and its sustainability requires specifi c consideration of the high natural variability of climatic and other factors governing its production and impact. In this paper, perspectives on the water resources aspects of large-scale biofuel feedstock production in sub-Saharan Africa are provided and the approach taken by South Africa in this regard is described.
4 Bhave, A. G.; Bulcock, L.; Dessai, S.; Conway, D.; Jewitt, G.; Dougill, A. J.; Kolusu, S. R.; Mkwambisi, D. 2020. Lake Malawi’s threshold behaviour: a stakeholder-informed model to simulate sensitivity to climate change. Journal of Hydrology, 584:124671. (Online first) [doi: https://doi.org/10.1016/j.jhydrol.2020.124671]
Climate change ; Hydrology ; Forecasting ; Models ; Water resources ; Water balance ; Rain ; Stakeholders ; Reservoirs ; Rivers ; Lakes ; Catchment areas / Malawi / United Republic of Tanzania / Mozambique / Lake Malawi / Shire River
(Location: IWMI HQ Call no: e-copy only Record No: H049529)
(2.06 MB)
Over 90% of Malawi’s electricity generation and irrigation depend on Lake Malawi outflows into the Shire River. Recent lake level declines have raised concerns over future climate change impacts, including the risk of no outflows if the Lake Malawi Outflow Threshold (LMOT) is passed. Addressing calls for model co-production, we iteratively engage stakeholders in data collection, and eliciting local system insights and management priorities, to inform the development of a Water Evaluation And Planning (WEAP) model for the Lake Malawi Shire River Basin. We use a simple model setup and manual calibration to allow for data sparsity and limited documentation of historical management decisions. The model satisfactorily captures limited observed streamflow patterns of Lake Malawi tributaries and lake level variations for the period 1960–2009, however, small errors in lake level simulation significantly affect simulation of monthly outflows. The riparian countries, Malawi, Tanzania and Mozambique contribute approximately 55%, 41% and 4% respectively to lake inflows (1960–2009 average). Forced with 29 bias-corrected global climate model projections (2021–2050) and assuming no change in current operating rules of key infrastructure, the WEAP model simulates wide-ranging changes. These include much higher lake levels that would cause downstream floods, and much lower lake levels, including 11 projections that fall below the LMOT. Both outcomes would have major implications for downstream hydropower and irrigation. Future water management plans require identification and evaluation of strategies that can address multi-year shifts in lake levels and the uncertainty inherent in future climate and hydrological model outputs.
5 de Souza, M.; Koo-Oshima, S.; Kahil, T.; Wada, Y.; Qadir, M.; Jewitt, G.; Cudennec, C.; Uhlenbrook, Stefan; Zhang, L. 2021. Food and agriculture. In UNESCO World Water Assessment Programme (WWAP); UN-Water. The United Nations World Water Development Report 2021: valuing water. Paris, France: UNESCO. pp.67-78.
Food security ; Sustainable agriculture ; Food production ; Multiple use water services ; Water resources ; Water management ; Water scarcity ; Water use efficiency ; Water productivity ; Water supply ; Water pricing ; Rainfed farming ; Irrigated farming ; Intensification ; Wastewater irrigation ; Water quality ; Ecosystems ; Groundwater ; Poverty alleviation ; Diets ; Costs
(Location: IWMI HQ Call no: e-copy only Record No: H050380)
https://unesdoc.unesco.org/in/documentViewer.xhtml?v=2.1.196&id=p::usmarcdef_0000375724&file=/in/rest/annotationSVC/DownloadWatermarkedAttachment/attach_import_db06f7c4-b33f-4833-be56-bbf54afdee3f%3F_%3D375724eng.pdf&locale=en&multi=true&ark=/ark:/48223/pf0000375724/PDF/375724eng.pdf#page=82
https://vlibrary.iwmi.org/pdf/H050380.pdf
https://vlibrary.iwmi.org/pdf/H050380.pdf
(1.12 MB) (15.9 MB)
6 Mabhaudhi, Tafadzwanashe; Senzanje, A.; Modi, A.; Jewitt, G.; Massawe, F. (Eds.) 2022. Water - energy - food nexus narratives and resource securities: a global south perspective. Amsterdam, Netherlands: Elsevier. 332p. [doi: https://doi.org/10.1016/C2020-0-03951-4]
Water resources ; Energy resources ; Food security ; Nexus ; Sustainable Development Goals ; Goal 2 Zero hunger ; Goal 6 Clean water and sanitation ; Goal 7 Affordable and clean energy ; Transboundary waters ; Catchment areas ; Public health ; Environmental health ; Ecosystems ; Financing ; Smallholders ; Farmers ; Capacity development ; SADC countries ; Spatial data ; Modelling ; Case studies / Southern Africa / Middle East / North Africa / Latin America / South Asia / South East Asia / United Republic of Tanzania / Malawi / Zimbabwe / Malaysia / Jordan / Morocco / Argentina / Brazil / Songwe River Basin / Tugwi-Mukosi Dam
(Location: IWMI HQ Call no: e-copy SF Record No: H051168)
(0.13 MB)
7 Mpandeli, S.; Nhamo, L.; Senzanje, A.; Jewitt, G.; Modi, A.; Massawe, F.; Mabhaudhi, Tafadzwanashe. 2022. The water-energy-food nexus: its transition into a transformative approach. In Mabhaudhi, Tafadzwanashe; Senzanje, A.; Modi, A.; Jewitt, G.; Massawe, F. (Eds.). Water - energy - food nexus narratives and resource securities: a global south perspective. Amsterdam, Netherlands: Elsevier. pp.1-13. [doi: https://doi.org/10.1016/B978-0-323-91223-5.00004-6]
(Location: IWMI HQ Call no: e-copy only Record No: H051169)
(0.30 MB)
Water, energy, and food are vital resources for human wellbeing. Yet, they are under increased pressure to meet demand from a growing population at a time of worsening insecurity due to depletion and degradation of reserves. These challenges prompted the formulation of the Sustainable Development Goals (SDGs) in 2015. All the 17 SDGs are connected. They recognize that developments in one sector will impact other sectors and that any proposed development must balance socioeconomic and environmental sustainability. Also, as the three resources are the most impacted by climate change, they provide a close link between adaptation, climate system, human society, and the environment. The intricate interlinkages between water, energy, and food resources with the related relationships with socioeconomic development, healthy ecosystems, human development, and sustainable development caused the rapid growth of the water–energy–food (WEF) nexus concept since the United Nations General Assembly of September 2015. Although the concept existed before 2015, its progression increased after the World Economic Forum of 2011 after a presentation by the Stockholm Environment Institute (SEI) in anticipation of the SDGs. This chapter discusses the evolution of the WEF nexus before and after 2015. The emphasis is on the importance of the concept in establishing the interconnectedness of resources and as a guide for coherent policy decisions that lead to sustainable development.
8 Kiala, Z.; Jewitt, G.; Senzanje, A.; Mutanga, O.; Dube, T.; Mabhaudhi, Tafadzwanashe. 2022. EO-WEF: a earth observations for water, energy, and food nexus geotool for spatial data visualization and generation. In Mabhaudhi, Tafadzwanashe; Senzanje, A.; Modi, A.; Jewitt, G.; Massawe, F. (Eds.). Water - energy - food nexus narratives and resource securities: a global south perspective. Amsterdam, Netherlands: Elsevier. pp.33-48. [doi: https://doi.org/10.1016/B978-0-323-91223-5.00011-3]
(Location: IWMI HQ Call no: e-copy only Record No: H051170)
(0.35 MB)
WEF (water–energy–food) nexus analyses have become a rapidly growing field since the Conference on Water, Energy and Food Security Nexus–Solutions for the Green Economy in Bonn in 2011. They have the potential to help stakeholders and policymakers to better understand the interlinkages between the different components of a nexus system and lead to solutions that are socially and environmentally beneficial. However, assembling wide-scope nexus has been challenged by issues such as proprietary considerations and data evolution over time, among others. Earth observations (EOs) have a huge offering of data sets that can provide data for most of the components of a nexus at a relatively low cost and various temporal and spatial resolutions. Furthermore, the advent of cloud computing has made possible the processing of massive information. This chapter introduces the Earth Observation for WEF nexus (EO-WEF), a multisectorial information system to visualize customizable data and generate time series data at any location. Google Earth Engine, a cloud computing platform that includes data archives of regularly updated EO and scientific data sets for a period of more than 40 years, powers this application. The capability of EO-WEF in generating spatial data was tested in the Songwe River Basin case study. Overall, the EO-WEF application provides data for key variables of a nexus that can be supplemented by other kinds of data that cannot be captured by EOs.
9 Mabhaudhi, Tafadzwanashe; Senzanje, A.; Modi, A.; Jewitt, G.; Massawe, F. 2022. WEF nexus narratives: toward sustainable resource security. In Mabhaudhi, Tafadzwanashe; Senzanje, A.; Modi, A.; Jewitt, G.; Massawe, F. (Eds.). Water - energy - food nexus narratives and resource securities: a global south perspective. Amsterdam, Netherlands: Elsevier. pp.321-326. [doi: https://doi.org/10.1016/B978-0-323-91223-5.00009-5]
(Location: IWMI HQ Call no: e-copy only Record No: H051173)
(0.07 MB)
The water–food–energy (WEF) nexus narratives is a collection of expert inputs on the concepts, analytical tools and case studies, and key developments on the importance and applicability of the WEF nexus as a transformative and circular approach. This chapter provides a detailed summary of each chapter, providing the reader with what has been achieved through the WEF nexus application. The chapters provide practical applications of integrated resource management and the pathways toward sustainable development. The main subjects of discussion include data availability, modeling tools, indices development, and metrics and their application across multiple spatiotemporal scales.
10 John, T. W.; Susnik, J.; Masia, S.; Jewitt, G.. 2023. Towards realization of nexus-doing at the grassroots level: water-energy-food governance assessment in the Songwe River Basin (Tanzania and Malawi). Environmental Science and Policy, 150:103596. (Online first) [doi: https://doi.org/10.1016/j.envsci.2023.103596]
Governance ; Nexus approaches ; Food security ; Infrastructure ; Investment ; Policies ; Grassroots organizations / United Republic of Tanzania / Malawi / Songwe River Basin
(Location: IWMI HQ Call no: e-copy only Record No: H052355)
https://www.sciencedirect.com/science/article/pii/S1462901123002459/pdfft?md5=fedff8619587723581caca6b751694c0&pid=1-s2.0-S1462901123002459-main.pdf
https://vlibrary.iwmi.org/pdf/H052355.pdf
https://vlibrary.iwmi.org/pdf/H052355.pdf
(4.37 MB) (4.37 MB)
The intricate connections between water, land, food, energy, and climate change require a multicentric approach to evaluating the trade-offs and synergies needed to achieve sustainable development. For example, the amount of water required in irrigated agriculture, consumptive water uses, and hydro-power production can potentially lead to water pollution, and negatively affect hydrological regimes. However, Operationalizing Water Energy Food (WEF)-nexus thinking has evolved such that a division between researchers (e.g., academia), political actors (e.g., policymakers), and development partners (e.g., promoters) has formed. This lack of connection can lead to a situation where there is incoherent governance of WEF resources management. In the Southern African Development Community (SADC) context, the WEF nexus approach is at the core of regional sustainable development plans and strategies. This paper analyses the ambitions and the expected outcomes of the Songwe River Basin Development Programme (SRBDP) and reflects on how governance coherence of WEF resources rooted at the grassroots level contributes toward achieving “nexus-doing”. The SRBDP exhibits a multi-stakeholder connection of interests geared towards a common target (i.e. stabilisation of the River Songwe flow). The SRBDP creates a multi-centric action system within the water, energy, food, and climate change adaptation role-players to achieve this overarching goal. The connections espoused in this system form the basis for nexus-doing in the Songwe River Basin. The major findings are: (i) there is a significant infrastructural demand in the Southern Africa Development Community (SADC), anchored in the development of water, land, food, and energy resources; (ii) governance coherence in the SADC context can be identified at both vertical and horizontal levels; (iii) the nature of trade-offs and synergies exhibited in SRBDP is valuable for making progress towards the operationalization of integrated WEF-nexus resource management; (iv) governance inconsistencies/ambiguities are better diagnosed and addressed in implementing nexus-doing initiatives such as SRBDP. Based on the findings, the following recommendations are proposed: (i) build upon small wins and support snow-balling successes to upscale promising initiatives-for instance the joint agreement by Tanzanian and Malawian governments to stabilize Songwe River flow by inaugurating the joint cooperation and equitable sharing of the Songwe watercourses (AFDB, 2019); (ii) invest in capacity building and human resources for the Songwe River Basin Commission and associated stakeholders to become more effective;-for posterity of sustainable developments in the Songwe River Basin; both the Tanzanian and Malawian governments in partnership with development partners need to upscale the investment in human capacity development and resource capacity development of the Songwe River Basin Commission (SRBC) as the joint development vehicle for the basin. and (iii) enrich policy assessment tools tailor-made for SADC. This tool will help in policy accounting to help minimize duplication, and ambiguities by fostering cooperation and policy mapping across the WEF-nexus sectors in the SADC region. This work can guide approaches to close the gap between nexus-thinking, and nexus-doing, something that is increasingly called for.
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