A Review of the Water–Energy–Food Nexus Research in Africa
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Water–Energy–Food Nexus Research Trends
3.2. Network Analysis
3.3. Keyword Analysis
3.4. Thematic Analysis
3.5. Reflections on the Pathways of the WEF Nexus Research in AFRICA Based on Content Analysis
4. Discussion: Salient Features of WEF Nexus Research Progression from Theory to Practice
4.1. Institutional Support for the WEF Nexus Research across Africa
4.2. Challenges, Opportunities and Antecedents of Transitioning WEF Nexus from Theory to Practice
4.3. Some Theories Underpinning the WEF Nexus Transition from Theory to Practice
- (a)
- From the unconnected silo paradigms that focus on nexus resources (security concerns) to interconnected (and sometimes interdependent or nested) linkages or systems incorporating environmental, social-economic and political drivers in a bid to holistically support the SDGs.
- (b)
- In the evaluation of the WEF nexus scholarship based on novel analytical approaches that are (i) innovative—the methods are capable of quantifying and delineating WEF nexus linkages and system boundaries; (ii) content specific—while scalable, the methods are increasingly attuned to include multi-scalar socio-physical networks, as well as locally contextualized, (iii) collaborative and participatory—this enables the WEF nexus methodology to be aligned to stakeholder needs (while promoting advocacy and co-production of WEF nexus research), as well as enhancing data sharing (vital for improved model parameterization), and (iv) supportive of the ultimate transition of research outputs to practice, i.e., operationalizing the WEF nexus outputs.
5. Conclusions
- (a)
- Using trends, network, keywords and thematic analyses of the accumulated collection of intellectual scientific outputs from the WEF nexus scholar–practitioner community in the African continent, a review of the WEF nexus empirical research using bibliometric analysis shows evidence of an inherent growth in the conceptual, intellectual and social structures of the WEF nexus in the African continent. These shifts have resulted in the emergence of hot topics (subfields) including modelling and optimization, climate variability and change, environmental ecosystem services sustainability, and sustainable development and livelihoods.
- (b)
- Based on content analysis of the WEF nexus literature in Africa, there is evidence that these structures have evolved along two main perspectives of WEF nexus research development, i.e., the interdisciplinary and transdisciplinary perspectives. In support of the interpretation of intellectual and changing structures of the WEF nexus research, it can be situated at the centre of the positivist, interpretivist and pragmatic paradigmatic perspectives (these are underpinned by the ontology, epistemology, and methodology and methods).
- (c)
- The WEF nexus research methodology has slowly transcended from interdisciplinary approaches to those that are inclusive, i.e., the scholars, practitioners and society are co-creators of the WEF knowledge.
- (d)
- We contend that whilst the theories of science change underpin the apparent expansion in WEF nexus scholarship, the macro-economic theory could be useful to explain how the WEF nexus research agenda is negotiated; the Integrative Environmental Governance (IEG) is the duly suited governance theory to bridge the inherent disconnect between WEF nexus output and governance processes abuzz in the literature.
- (e)
- Operationalizing the WEF nexus research in the African continent is prone to various challenges including:
- (1)
- the limited number of duly suited optimised and scalable WEF nexus modelling frameworks,
- (2)
- insufficient relevant input data (at appropriate spatial-temporal scales),
- (3)
- lack of requisite knowledge and skillset required to operationalise the WEF nexus, and
- (4)
- limited application of transdisciplinary research approaches that bring scholars, practitioners and society as co-creators of WEF nexus knowledge.
- (f)
- There exists opportunities for transitioning WEF nexus thinking to practice. These include co-developing adequate resource assessment and visualization tools, expertise, and institutional capacity to support the nexus dialogue.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Appendix A
References | Corresponding Author | Year of Publication | Country of Lead Author | Theme of the Study |
---|---|---|---|---|
[61] | Gulati M | 2013 | South Africa | Assesses the interlinkages of water, energy and food resources and potential influences of energy and water costs on food prices in South Africa |
[62] | Hanjra MA | 2013 | Australia | Reviewed existing approaches, interventions and policies that support agricultural development and food security within and beyond the agriculture sector |
[63] | Keulertz M | 2015 | USA | A study that examines five different pathways of financing green growth projects conceptualized from the WEF nexus perspective across the Arab countries using funds from regional markets and/or loans from oil-rich Gulf countries |
[64] | Jobbins G | 2015 | UK | A summary of findings of three case studies on the bottom-up application of WEF nexus framework for drip irrigation in Morocco |
[65] | Conway D | 2015 | UK | A study that explores the linkages between climate and water–energy–food nexus while underscoring the sectoral and spatial interdependencies that mediate policies, institutions and investments in support of security of the resources |
[66] | King C | 2015 | UK | A study that analyzes the complex relationships between water, energy and food trade-offs and assesses rural households’ green water management strategies across six basin agro-ecosystems in the Middle East and North Africa in the context of WEF nexus |
[50] | Ozturk I | 2015 | Turkey | The study used selected ecological indicators to assess sustainability of food–energy–water resources in the BRICS countries; three indicators, e.g., food security index, cereal production and agricultural value, were constructed using principal component analysis and dynamic panel modelling |
[67] | Amos CC | 2016 | Australia | The study underscored the role rainwater harvesting (RWH) plays in water security for individuals and governments. In particular, the study discussed the economics, quality and quantity, and WEF nexus of domestic urban and peri-urban RWH in Kenya and Australia |
[68] | Gleeson EH | 2016 | Switzerland | Reviewed abstracts submitted to the 2015th Perth III conference, focusing on knowledge exchange, as well as establish and strengthen collaborations within mountain scientific research community; the WEF nexus is one of the future earth focal challenges that received substantial attention in this forum. |
[69] | Li G | 2016 | China | The study used the Data Envelopment Analysis (DEA) model and city-level input-out index system derived from the interactions between the WEF nexus and population, economic and environment systems, to evaluate WEF nexus input-out efficiency. |
[70] | Borgomeo E | 2016 | USA | The study proposed the use of scenarios analysis and integrated assessment modelling essential for building a sustainable future of water–energy–food resources in the Middle East and North Africa |
[71] | Pieters H | 2016 | Belgium | The book chapter presents the assessment of interaction of water shortage, energy, and food production, by considering food security in the Kingdom of Saudi Arabia, through global perspective in a WEF nexus framework. |
[51] | Ozturk I | 2017 | Turkey | Dynamic interlinkages between agricultural sustainability and food–energy–water poverty were assessed based on multi-techniques such as pooled least squares regression, fixed and random effects regression approaches |
[7] | Endo A | 2017 | Japan | Provides a review and analysis of WEF nexus to assess the current status and developments |
[72] | Phiri Z | 2017 | Zimbabwe | Provides a comprehensive review on the availability, management and sustainability of water resources in the Zambezi River Basin |
[73] | Hoffmann HK | 2017 | Germany | The WEF nexus method was used to assess different multi-phases in Africa’s charcoal value chain, thereby optimizing socio-economic and environmental outcomes |
[74] | Zaman K | 2017 | Pakistan | A panel random effect model was utilized to assess the association between the WEF resources and air pollutions in 19 selected sub-Saharan African countries |
[75] | Guta DD | 2017 | Ethiopia | Investigates factors that influence failures and achievements of decentralized energy outcomes in Asia, sub-Saharan Africa and South America. |
[76] | Siciliano G | 2017 | UK | The study explored the land–water–energy–food nexus with respect to large-scale farmland investments in selected countries, with the aim to support investors and policy makers particularly on land investments |
[77] | Ololade OO | 2017 | South Africa | The study underscores the disparities in equitable access to water, energy and food in South Africa and argues for emergent new policy paradigms and research needs requisite for sustainable development due to the interconnectedness and interdependencies of WEF resources |
[78] | Urban F | 2017 | UK | This book presents an assessment of governance and socio-economic implications of building dams in low- and middle-income countries in Asia and Africa; the book also highlights potential benefits of infrastructure projects, particularly in promoting local and national establishments in those countries. |
[79] | Adeel Z | 2017 | Canada | The book chapter presents aspects of regional security that includes flow of resources, sustainable economic development, alleviation of poverty, and peaceful co-existence, focusing on the WEF nexus and its role in regional security; the chapter identifies regional integration and political stability as the key ingredients for achieving regional security. |
[80] | Zhang X | 2018 | USA | A review of climate change impacts on hydropower development at a global scale from the policy and WEF nexus perspectives |
[81] | Udias A | 2018 | Italy | In the study, an E-NEXUS open software Decision Support System (DSS) was developed and applied in the Water Energy Food Ecosystem (WEFE) nexus framework across the Mékrou transboundary river basin (shared among Benin, Burkina Faso and Niger) to enhance food crop security |
[21] | Nhamo L | 2018 | South Africa | An appraisal study status of WEF-related policies, institutions and interlinkages |
[28] | Mpandeli S | 2018 | South Africa | A review study on climate change impacts, as well as mitigation and adaptation options, on water, energy and food resources across southern Africa |
[25] | Mabhaudhi T | 2018 | South Africa | A review study that assessed the current status (gaps and opportunities) of irrigated Agriculture in Southern Africa based on the WEF nexus lens |
[82] | Antwi-Agyei P | 2018 | Ghana | The study explored key themes for adaptation and mitigation within the National Determined Contributions (NDCs) of across eleven Western African States |
[9] | Pardoe J | 2018 | UK | A case study (in Tanzania) that examined climate change policy integration and coordination across the water, energy, agriculture sectors |
[83] | Yang J | 2018 | China | The study assessed the impacts of climate and anthropogenic changes on WEF and ecosystem sectors in the Nigel River Basin in West Africa |
[84] | Dombrowsky I | 2018 | Germany | The study utilizes the regime theory in international relations and the benefit of sharing literature to investigate the role regional organizations such as the International River Basin Organizations (IRBOs) play in the governance of hydropower WEF nexus projects using Rusumo Falls and Ruzizi III hydropower projects in the Great Lakes region as case studies |
[85] | Yang YCE | 2018 | USA | The study used an advanced water modelling approach and simulated the WEF nexus competition system in order to decipher the coupled human–nature interactions in the Great Ruaha River basin and used the Web-based visualization to disseminate the results to nontechnical practitioners |
[86] | Mwampamba TH | 2018 | Mexico | The study synthesized existing literature and proposed a theoretical and conceptual framework for analyzing the interlinkages between charcoal, livestock, and hydrological processes. The proposed charcoal-livestock-water nexus is posited to have a wide range of outcomes for hydrological applications |
[87] | Seeliger L | 2018 | South Africa | The study explores the interlinkages amongst WEF resources and also deliberates on the nexus in the context of the South African water sector, focusing on the Breede River Catchment |
[88] | Matthews N | 2018 | UK | The study analyzed the challenges of building resilience and the related WEF nexus risks associated with the construction of dams using one case study each in Africa and in Asia. |
[89] | Ding KJ | 2019 | USA | The study developed a data-driven framework for sub-Saharan African countries experiencing food–energy–water challenges; the framework employed food–energy–water resources, food–energy–water services, and food–energy–water health outcomes |
[90] | Mabhaudhi T | 2019 | South Africa | The study assessed the rural livelihoods, health and wellbeing of the population in South Africa using a WEF nexus analytical livelihoods model from a complex systems perspective |
[91] | Gush M | 2019 | UK | The study focused on the use of the water footprint network approach to determine water footprint information of growing crops under Mediterranean climate conditions in South Africa |
[92] | Ding K | 2019 | USA | The study presents exploration of different methods, including an agent-based model, to manage the food–energy–water nexus in Cape Town, South Africa |
[93] | Salmoral G | 2019 | UK | Investigated interrelationships between nexus governance and water diplomacy and their benefits for enhanced transboundary resources management, using the Zambezi River Basin as the case study |
[94] | Simpson GB | 2019 | South Africa | Reviewed interlinkages between energy, food, and water security and their corresponding trade-offs in the Mpumalanga Province of South Africa |
[95] | Hameed M | 2019 | USA | Reviewed current challenges related to food, energy and water security in sixteen countries in the Middle East of Africa |
[96] | Siderius C | 2020 | England | Multi-scale analysis was used in this study to quantify the oil-dominated WEF nexus in Gulf Cooperation Council countries; based on virtual water trade, the study also assessed potential exposure to nexus stresses, including groundwater depletion in other countries, including the Middle-East and North Africa. |
[97] | Nhamo L | 2020 | South Africa | WEF nexus sustainability indicators used to develop an analytical model for managing WEF resources |
[52] | Laubscher RK | 2020 | South Africa | The study demonstrates an implementation of an algae-to-energy sewage treatment system in southern Africa through an operation of an Integrated Algal Pond System (IAPS). The proposed IAPS-based algae-to-energy sewage treatment provides alternative energy co-production in a peri-urban setting under a constrained WEF nexus |
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Search Topic (First Row) | Areal Restriction (Second Row) |
---|---|
Water-Energy-Food Nexus | [AND] Africa |
Water-energy-food security nexus | [AND] Africa |
Water-energy-food climate nexus | [AND] Africa |
Water-energy-food nexus governance | [AND] Africa |
Water-energy-food nexus policy | [AND] Africa |
Water-energy-food nexus trade-offs | [AND] Africa |
Water-energy-food nexus decision making | [AND] Africa |
Water-energy-food nexus interdisciplinary analysis | [AND] Africa |
Water-energy-food nexus transdisciplinary approaches | [AND] Africa |
Water-energy-food nexus case studies | [AND] Africa |
Food-Energy-Water nexus | [AND] Africa |
Document Type | No. of Documents |
---|---|
Article | 27 |
Conference and proceedings papers | 4 |
Book chapter | 2 |
Book | 2 |
Review | 10 |
Total | 45 |
Cluster | No. of Keywords | Selected Keywords [Country and no. of Links Connected to the Institution] | Remarks |
---|---|---|---|
Red | 10 | Univ. of KwaZulu-Natal [SA, 10]; Univ. of Venda [SA, 8]; Water Research Commission [SA, 7]; Int. Rice Research Inst. [5]; Int. Water Management Inst. [SA, 5]; UNISA [SA, 3]; Addis Ababa Univ. [Ethiopia, 1] | Collaborations are mostly between South African institutions |
Green | 9 | London School of Economics and Political Science [England; 9]; CSIR [SA, 6]; Humboldt-Universitt zu Berlin [Germany, 6]; Univ. of East Anglia [England; 6]; Univ. of Pretoria [SA, 6]; Univ. of Witwatersrand [SA, 6]; Univ. of Leeds [England; 3]; Sokoine Univ. of Agric. [Tanzania, 3] | Significant collaborations from Germany and England with institutions in Africa, e.g., mostly in South Africa and Tanzania |
Blue | 7 | United Nations Univ. Inst. For Water [Canada, 7]; University of Massachusetts Amherst [USA, 7]; Xi’an University of Technology [China, 7]; Univ. de Montpellier [France, 7] | Most of the institutions have shown collaborations with the International Food Policy Research Institute in the purple cluster |
Purple | 5 | International Food Policy Research Institute [USA, 17]; Atmospheric Sciences and Global Change Division [USA, 4]; Montana State Univ. [USA, 4] | The International Food Policy Research Institute is the key institution that has collaborated with most institutions in the green and blue cluster |
Yellow | 6 | University in Bern [Switzerland, 5]; Oregon State Univ. [USA, 5]; Univ. of Highlands [UK, 5] | None of the institutions in this cluster have collaboration links with African institutions |
Cluster | No. of Keywords | Selected Keywords | Remark |
---|---|---|---|
Red | 21 | acclimatization, climate change, decision support system, energy, food, humans, livelihood resource allocation, resource management, sustainable development, water supply, wellbeing | Draws uttermost attention from researchers in WEF nexus research field |
Green | 16 | biodiversity, energy resource, environmental management, governance approach, investments, sustainability, environmental protection, carbon dioxide, economic development | Draws high attention from researchers in WEF nexus research field |
Blue | 13 | agriculture, ecology, economic and social effects, ecosystems, energy use, food production, trade-off, water-energy, water footprint, water management, water resources | Draws moderate attention from researchers in WEF nexus research field |
Yellow | 10 | crop production, food security, irrigation, river basin, watersheds, decision making, productivity, food supply, rivers | Draws minimal attention from researchers in WEF nexus research field |
Paradigm | Ontology | Epistemology | Theoretical (Conceptual Framework) | Methodology (WEF Nexus Process) | Method/Techniques | Visible in the WEF Literature Reviewed |
---|---|---|---|---|---|---|
Positivism (knowledge gap-filling) | The WEF nexus three-component sectors are viewed as real | Robust tools exist for WEF nexus that utilize the observable and measureable data | Underpinnings of the WEF nexus scholarly enterprise relate the causal relationships of sectors | WEF nexus research through experimentation, simulation, survey design | Quantitative: Sampling, statistical analysis and focused group interviews | Yes; more prominent in recent publications. |
Constructivism/Interpretivism (problem-solving) | The scope of WEF nexus research created by individuals in groups, socially constructed through language and culture | Interpret the WEF nexus in order to uncover the underlying meaning of inter-relationships, linkages and behaviours of all stakeholders of the nexus | Use phenomenology or critical inquiry to conceptualize WEF nexus in terms of system components and the stakeholders | WEF nexus research premised on culture (ethnography), phenomenological/lived experience research on material flows within WEF nexus, transformative action research | Qualitative: Interviews, observation (researcher as participant/nonparticipant); case studies and narratives | Yes; more prominent in recent publications. |
Pragmatism (transdisciplinary research) | WEF nexus is continuously renegotiated, debated, re-interpreted under, e.g., changing climate and pandemics (COVID-19) | The best method is one that solves the WEF optimisation problem considering the trade-offs among the resources and humankind | Research through transdisciplinary design from “the world of human experience.” [43] | Apply mixed methods and transformative action research | Combination of any of the above, as well as data mining, usability testing, physical prototypes | Yes; more prominent in recent publications. |
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Share and Cite
Botai, J.O.; Botai, C.M.; Ncongwane, K.P.; Mpandeli, S.; Nhamo, L.; Masinde, M.; Adeola, A.M.; Mengistu, M.G.; Tazvinga, H.; Murambadoro, M.D.; et al. A Review of the Water–Energy–Food Nexus Research in Africa. Sustainability 2021, 13, 1762. https://doi.org/10.3390/su13041762
Botai JO, Botai CM, Ncongwane KP, Mpandeli S, Nhamo L, Masinde M, Adeola AM, Mengistu MG, Tazvinga H, Murambadoro MD, et al. A Review of the Water–Energy–Food Nexus Research in Africa. Sustainability. 2021; 13(4):1762. https://doi.org/10.3390/su13041762
Chicago/Turabian StyleBotai, Joel O., Christina M. Botai, Katlego P. Ncongwane, Sylvester Mpandeli, Luxon Nhamo, Muthoni Masinde, Abiodun M. Adeola, Michael G. Mengistu, Henerica Tazvinga, Miriam D. Murambadoro, and et al. 2021. "A Review of the Water–Energy–Food Nexus Research in Africa" Sustainability 13, no. 4: 1762. https://doi.org/10.3390/su13041762