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Chauruka, Moline (author), Duker, Annelieke (author), Prasad, Pooja (author), van der Zaag, P. (author)In Zimbabwe, farmer-led irrigation is far more widespread than planners and policy makers realise. Along the Shashani sand river, in the arid to semi-arid lands of south-western Zimbabwe, diverse farmer-initiated irrigation ventures exist. This qualitative case study focuses on bucket irrigation, in which very small vegetable fields of up to...journal article 2023
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Duker, Annelieke E.C. (author), Maseko, Sambulisiwe (author), Moyo, Mehluli A. (author), Karimba, Benson M. (author), Bolding, Alex (author), Prasad, Pooja (author), de Fraiture, Charlotte (author), van der Zaag, P. (author)Farmer-led irrigation is valued for its resilience and ability to cope with shocks and benefit from opportunities. Yet, typologies of farmer-led irrigation are mostly static categorisations without analysing farmers’ decision-making over time, and without studying ‘failed’ cases. We therefore analysed temporal changes in farmers’ irrigation...journal article 2023
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Duker, Annelieke E.C. (author), Karimba, Benson Mutuma (author), Wani, Grace E. (author), Prasad, Pooja (author), van der Zaag, P. (author), De Fraiture, Charlotte (author)In the semi-arid lands of southern Kenya, a dynamic process of farmer-led irrigation has developed over the past two decades. It is characterised by short-term agreements to access land and water. Resident and migrant farmers, capital providers and local landowners have engaged in diverse partnerships to benefit from water and land along the...journal article 2022
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Karimba, Benson Mutuma (author), Duker, Annelieke (author), Prasad, Pooja (author), Karimi, Poolad (author), de Fraiture, Charlotte (author), van der Zaag, P. (author)Irrigation is commonly viewed as an activity fixed in time and place requiring permanent infrastructure. However, smallholder farmers in Sub-Saharan Africa engage in irrigation in diverse locations under different organizational modalities. This research analyses a flexible and dynamic form of irrigation driven by unique partnerships between...journal article 2022
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Owusu, A.G. (author), Mul, Marloes (author), Strauch, Michael (author), van der Zaag, P. (author), Volk, Martin (author), Slinger, J (author)The Volta clam, Galatea paradoxa, is a freshwater macrobenthic bivalve which is endemic to the Lower Volta River in Ghana. The range of occurrence of the clam has been influenced by the flow regime in the Lower Volta which is in turn controlled by operation of two dams located upstream. Previous research has documented the changes to the Lower...journal article 2021
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Duker, A. (author), Cambaza, C. (author), Saveca, P. (author), Ponguane, S. (author), Mawoyo, T. A. (author), Hulshof, M. (author), Nkomo, L. (author), Hussey, S. (author), van der Zaag, P. (author)Alluvial aquifers in seasonal rivers are a yet underutilised resource in many (semi-)arid regions of Africa. These so-called sand river aquifers provide nature-based water storage within easy reach because they are shallow. They form a significant potential renewable source of water for irrigation development. Innovative approaches and solutions...journal article 2020
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Gebremicael, T.G. (author), van der Zaag, P. (author), Abbas Mohamedali, Y. (author), Hagos, Eyasu Y. (author)Understanding the natural low flow of a catchment is critical for effective water management policy in semi-arid and arid lands. The Geba catchment in Ethiopia, forming the headwaters of Tekeze-Atbara basin was known for its severe land degradation before the recent large scale Soil and Water conservation (SWC) programs. Such interventions...journal article 2020
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Duker, A.E.C. (author), Mawoyo, T.A. (author), Bolding, A. (author), de Fraiture, C. (author), van der Zaag, P. (author)In recent years more recognition is given to the benefits and risks of private smallholder irrigation development across sub-Saharan Africa. It is acknowledged for its capacity to adapt to local circumstances and challenges. This study assesses the heterogeneous character of private smallholder irrigation in the challenging environment of...journal article 2020
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Renner, Tobias (author), Meijerink, Sander (author), van der Zaag, P. (author), Smits, Toine (author)The combined effects of socio-economic growth as well as climate change exert increasing pressure on international river basins and require dedicated cooperative efforts to jointly manage international rivers. Cooperative strategies drawn from scientific literature, empirical research and practitioner’s handbooks are explored and clustered...journal article 2020
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Ekka, A. (author), Pande, S. (author), Jiang, Yong (author), van der Zaag, P. (author)The process of development has led to the modification of river landscapes. This has created imbalances between ecological, economic, and socio-cultural uses of ecosystem services (ESs), threatening the biotic and social integrity of rivers. Anthropogenic modifications influence river landscapes on multiple scales, which impact river-flow...review 2020
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Sifundza, L. S. (author), van der Zaag, P. (author), Masih, I. (author)Future climate projections for Southern Africa indicate an increase in the severity of droughts. Drought preparedness and management are important in such regions to minimise impacts on people and the environment. The aim of this study was to explore the responses of different institutions and actors to the 2015/2016 drought in the Komati...journal article 2019
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Okello, Aline M.L.Saraiva (author), Masih, Ilyas (author), Uhlenbrook, S. (author), Jewitt, Graham P.W. (author), van der Zaag, P. (author)The variability of rainfall and climate, combined with land use and land cover changes, and variation in geology and soils makes it a difficult task to accurately describe the key hydrological processes in a catchment. With the aim to better understand the key hydrological processes and runoff generation mechanisms in the semi-arid meso-scale...journal article 2018
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Digna, R.F.M.O. (author), Castro-Gama, Mario (author), van der Zaag, P. (author), Mohamed, Yasir A. (author), Corzo, Gerald (author), Uhlenbrook, S. (author)The Eastern Nile Basin is facing a number of transboundary issues, including water resources development, and the associated impacts. The Nile Basin, particularly the Eastern Nile Sub-basin, is considered as one of a few international river systems of potential conflicts between riparian countries. The Eastern Nile is characterized by the...journal article 2018
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Digna, R.F.M.O. (author), Mohamed, Yasir A. (author), van der Zaag, P. (author), Uhlenbrook, S. (author), van der Krogt, Wil (author), Corzo, Gerald (author)The Eastern Nile riparian countries are currently developing several reservoir projects to contribute to the needs for energy and food production in the region. In the absence of formal mechanisms for collaboration, the transboundary nature of the Eastern Nile basin makes water resources development challenging. The large seasonal and...journal article 2018
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Abdullah, A.D.A. (author), Castro-Gama, Mario (author), Popescu, Ioana (author), van der Zaag, P. (author), Karim, Usama (author), Al Suhail, Qusay (author)Wastewater effluents from irrigation and the domestic and industrial sectors have serious impacts in deteriorating water quality in many rivers, particularly in areas under tidal influence. There is a need to develop an approach that considers the impact of human and natural causes of salinization. This study uses a multi-objective...journal article 2018
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Kahsay, Tewodros Negash (author), Kuik, Onno (author), Brouwer, Roy (author), van der Zaag, P. (author)A multi-country, multi-sector computable general equilibrium (CGE) model is used for the first time to evaluate the economic and water resource availability effects of trade liberalization (removal of import tariffs) and facilitation (reducing non-tariff barriers) under climate change in the Nile Basin. The analysis uses the GTAP 9 Database...journal article 2018
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Renner, T. (author), Meijerink, S (author), van der Zaag, P. (author)In this study, we look at the evolution of a cooperative water regime in the delta of the Rhine catchment. In a Dutch–German case study, we focus on cross-border cooperation on the local and regional scale, describing and analyzing how a remarkably resilient and robust transboundary water regime has evolved over the course of 50 years....journal article 2017
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Kahsay, Tewodros Negash (author), Kuik, Onno (author), Brouwer, Roy (author), van der Zaag, P. (author)A multi-country, multi-sector computable general equilibrium (CGE) model is employed to evaluate the economy-wide impacts of climate change under the IPCC's A2 and B1 scenarios and existing irrigation development plans in the Nile basin. The study reveals that climate change adversely affects mainly downstream Egypt and to a lesser extent...journal article 2017
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Kemerink-Seyoum, J.S. (author), Chinguno, N. L.T. (author), Seyoum, S.D. (author), Ahlers, R (author), Bolding, J. A. (author), van der Zaag, P. (author)This paper contributes to the ongoing discussion on the implementation of water reforms in rural African waterscapes and explores how farmers in a tertiary catchment in Zimbabwe react to these reforms. It shows how privileged farmers have jumped the water queue by moving their agricultural activities upstream where they illegally divert water...journal article 2017