Your search found 7 records
1 Davies, J.; Baxter, J.; Bradley, M.; Connor, D.; Khan, J.; Murray, E.; Sanderson, W.; Turnbull, C.; Vincent, M. (Eds.) 2001. Marine monitoring handbook, March 2001. Peterborough, UK: Joint Nature Conservation Committee. 405p.
(Location: IWMI-HQ Call no: P 5974 Record No: H029638)
2 Robins, N.; Davies, J.; Hankin, P.; Sauer, D. 2003. Groundwater and data: An African experience. Waterlines, 21(4):19-21.
(Location: IWMI-HQ Call no: PER Record No: H031739)
3 Robins, N. S.; Davies, J.; Farr, J. L.; Calow, R. C. 2006. The changing role of hydrogeology in semi-arid southern and eastern Africa. Hydrogeology Journal, 14:1483-1492.
(Location: IWMI HQ Call no: P 7849 Record No: H039952)
4 MacDonald, A. M.; Davies, J.. 2000. A brief review of groundwater for rural water supply in sub-Saharan Africa. Keyworth, Nottingham, UK: British Geological Survey. 24p. (BGS Technical Report WC/00/33 / Overseas Geology Series)
Water supply ; Rural development ; Groundwater ; Sedimentary materials ; Aquifers ; Hydrology ; Wells / Africa South of Sahara
(Location: IWMI HQ Call no: e-copy only Record No: H042022)
http://siteresources.worldbank.org/INTWRD/864188-1171045933145/21215329/31BGSAfricaRuralGW.pdf
https://vlibrary.iwmi.org/PDF/H042022.pdf
https://vlibrary.iwmi.org/PDF/H042022.pdf
(2.25 MB)
5 Sorensen, J. P. R.; Davies, J.; Ebrahim, Girma Y.; Lindle, J.; Marchant, B. P.; Ascott, M. J.; Bloomfield, J. P.; Cuthbert, M. O.; Holland, M.; Jensen, K. H.; Shamsudduha, M.; Villholth, Karen G.; MacDonald, A. M.; Taylor, R. G. 2021. The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa. Hydrogeology Journal, 29(8):2773-2787. [doi: https://doi.org/10.1007/s10040-021-02391-3]
Groundwater extraction ; Groundwater recharge ; Well hydrographs ; Semiarid climate ; Catchment areas ; Groundwater table ; Rain ; River flow ; Stream flow ; Extreme weather events ; El Nino-Southern Oscillation ; Hydrogeology ; Boreholes ; Spatial distribution ; Land use / South Africa / Limpopo / Mogalakwena Catchment / Sand River Catchment
(Location: IWMI HQ Call no: e-copy only Record No: H050671)
https://link.springer.com/content/pdf/10.1007/s10040-021-02391-3.pdf
https://vlibrary.iwmi.org/pdf/H050671.pdf
https://vlibrary.iwmi.org/pdf/H050671.pdf
(6.26 MB) (6.26 MB)
There is a scarcity of long-term groundwater hydrographs from sub-Saharan Africa to investigate groundwater sustainability, processes and controls. This paper presents an analysis of 21 hydrographs from semi-arid South Africa. Hydrographs from 1980 to 2000 were converted to standardised groundwater level indices and rationalised into four types (C1–C4) using hierarchical cluster analysis. Mean hydrographs for each type were cross-correlated with standardised precipitation and streamflow indices. Relationships with the El Nino– Southern Oscillation (ENSO) were also investigated. The four hydrograph types show a transition of autocorrelation over increasing timescales and increasingly subdued responses to rainfall. Type C1 strongly relates to rainfall, responding in most years, whereas C4 notably responds to only a single extreme event in 2000 and has limited relationship with rainfall. Types C2, C3 and C4 have stronger statistical relationships with standardised streamflow than standardised rainfall. C3 and C4 changes are significantly (p < 0.05) correlated to the mean wet season ENSO anomaly, indicating a tendency for substantial or minimal recharge to occur during extreme negative and positive ENSO years, respectively. The range of different hydrograph types, sometimes within only a few kilometres of each other, appears to be a result of abstraction interference and cannot be confidently attributed to variations in climate or hydrogeological setting. It is possible that high groundwater abstraction near C3/C4 sites masks frequent small-scale recharge events observed at C1/C2 sites, resulting in extreme events associated with negative ENSO years being more visible in the time series.
6 Davies, J.; Blekking, J.; Hannah, C.; Zimmer, A.; Joshi, N.; Anderson, P.; Chilenga, A.; Evans, T. 2022. Governance of traditional markets and rural-urban food systems in Sub-Saharan Africa. Habitat International, 127:102620. [doi: https://doi.org/10.1016/j.habitatint.2022.102620]
Markets ; Rural-urban food supply chains ; Food systems ; Governance ; Institutions ; Food security ; Local government ; Smallholders ; Infrastructure ; Households ; Urbanization ; Towns ; Committees / Africa South of Sahara / Zambia
(Location: IWMI HQ Call no: e-copy only Record No: H051343)
(2.75 MB)
Traditional markets form a critical part of rural-urban food systems in sub-Saharan Africa (SSA). Aside from providing more affordable and physically accessible food to low-income consumers, traditional markets serve as wholesalers to street vendors, create market entry points for smallholder farmers, and provide essential employment opportunities for sellers. However, many traditional markets face ongoing challenges such as infrastructure deficits, poor waste management, and internal conflict that undermine their effectiveness. Markets that perform effectively can provide requisite services to vendors and manage relationships between actors within and outside the market. We propose that the degree to which traditional markets are able to play an effective role in rural-urban food systems depends on the governance structures in place in individual markets. We aim to take initial steps toward developing an institutional analysis methodology that can be used to identify the set of institutional arrangements that are appropriate for successfully governing traditional markets. Using data from a 2021 phone call survey of 81 urban and rural markets in Zambia, and drawing inspiration from Ostrom's design principles for enduring common pool resources, we identify some of the institutional arrangements that tend to lead to effective market performance in Zambia, including market formality, the role of market committees, government engagement in markets, and conflict resolution protocols. Our study alone does not definitively identify the set of institutions that are appropriate for successfully governing traditional markets, particularly beyond the Zambian context. However, we highlight the types of data that need to be collected to achieve this objective by contributing a survey instrument and an empirical dataset of traditional markets across the rural-urban food system.
7 Devenish, A. J. M.; Schmitter, Petra; Jellason, N. P.; Esmail, N.; Abdi, N. M.; Adanu, S. K.; Adolph, B.; Al-Zu’bi, Maha; Amali, A. A.; Barron, J.; Chapman, A. S. A.; Chausson, A. M.; Chibesa, M.; Davies, J.; Dugan, E.; Edwards, G. I.; Egeru, A.; Gebrehiwot, T.; Griffiths, G. H.; Haile, A.; Hunga, H. G.; Igbine, L.; Jarju, O. M.; Keya, F.; Khalifa, M.; Ledoux, W. A.; Lejissa, L. T.; Loupa, P.; Lwanga, J.; Mapedza, Everisto D.; Marchant, R.; McLoud, T.; Mukuyu, Patience; Musah, L. M.; Mwanza, M.; Mwitwa, J.; Neina, D.; Newbold, T.; Njogo, S.; Robinson, E. J. Z.; Singini, W.; Umar, B. B.; Wesonga, F.; Willcock, S.; Yang, J.; Tobias, J. A. 2023. One hundred priority questions for the development of sustainable food systems in Sub-Saharan Africa. Land, 12(10):1879. (Special issue: Social and Environmental Trade-Offs in African Agriculture: Achieving Sustainable Development Goals) [doi: https://doi.org/10.3390/land12101879]
Food systems ; Sustainable Development Goals ; Agricultural development ; Agroecosystems ; Environmental impact ; Food security ; Social inclusion ; Gender equality ; Women ; Food production ; Technology adoption ; Postharvest technology ; Land-use planning ; Policies ; Investment ; Urbanization ; Climate change ; Natural resources management ; Indigenous Peoples' knowledge / Africa South of Sahara
(Location: IWMI HQ Call no: e-copy only Record No: H052331)
https://www.mdpi.com/2073-445X/12/10/1879/pdf?version=1696902404
https://vlibrary.iwmi.org/pdf/H052331.pdf
https://vlibrary.iwmi.org/pdf/H052331.pdf
(1.62 MB) (1.62 MB)
Sub-Saharan Africa is facing an expected doubling of human population and tripling of food demand over the next quarter century, posing a range of severe environmental, political, and socio-economic challenges. In some cases, key Sustainable Development Goals (SDGs) are in direct conflict, raising difficult policy and funding decisions, particularly in relation to trade-offs between food production, social inequality, and ecosystem health. In this study, we used a horizon-scanning approach to identify 100 practical or research-focused questions that, if answered, would have the greatest positive impact on addressing these trade-offs and ensuring future productivity and resilience of food-production systems across sub-Saharan Africa. Through direct canvassing of opinions, we obtained 1339 questions from 331 experts based in 55 countries. We then used online voting and participatory workshops to produce a final list of 100 questions divided into 12 thematic sections spanning topics from gender inequality to technological adoption and climate change. Using data on the background of respondents, we show that perspectives and priorities can vary, but they are largely consistent across different professional and geographical contexts. We hope these questions provide a template for establishing new research directions and prioritising funding decisions in sub-Saharan Africa.
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