Rabi Mohtar

Rabi Mohtar
American University of Beirut and Texas A&M University · (AUB) Faculty of Agricultural and Food Sciences; (TX A&M) Civil and Biological and Agricultural Engineering

Ph.D. Agricultural Technology and Systems Management, Michigan State University

About

237
Publications
36,327
Reads
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3,248
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Introduction
Mohtar’s research focuses on analytic frameworks for linking science and policy, pedostructure characterization of the soil-water medium, non-traditional water in agriculture, and applications for sustainable integrated water management. He is currently Dean, Faculty of Agricultural and Food Sciences (FAFS), the American University of Beirut, and a TEES Research Professor at Texas A&M University where he founded the Water-Energy-Food Nexus Initiative and serves as an Advisor to the Energy Institute. Mohtar developed the concept of Global Design Teams: real-world, full-cycle design experiences that help raise global awareness.

Publications

Publications (237)
Article
Full-text available
This paper describes the beginning of the WEF Nexus Journey in the classroom and shows how the Nexus emerged into the discipline that it is today. The paper offers definitions, shares some success stories from around the world, reflects on future opportunities, and provides a few concluding remarks.
Article
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This perspective highlights a place for Health (H) in the Water, Energy, and Water (WEF) nexus. It reviews the reference to health in the WEF nexus literature and makes the case for its inclusion into the WEF Nexus. We argue that although the nexus concept of water, energy, and food is relatively recent, it has been adopted by several UN agencies a...
Article
Full-text available
The American Chemical Society’s Division of Environmental Chemistry symposium Toward Creating a Water-Energy-Food (WEF) Nexus Community of Practice, brought together 25 cross-disciplinary speakers in five thematic areas: 1) state of the art models and approaches, 2) WEF Nexus initiatives and case studies, 3) WEF governance and stakeholder engagemen...
Article
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Globally, water is a bottleneck to food security and, as such, a new approach for water for food is needed. Food insecurity is knocking at every nation's door, including those of the most developed. Moreover, the disruptions in food supply chains that result from continued reliance on a business-as-usual approach of traditional, non-sustainable foo...
Article
Food security and water sustainability in arid and semiarid regions are threatened by rapid population growth, declining natural resources, and global climate change. Countries in the arid regions compensate meat import by raising domestic livestock with cultivated green fodder, which diminishes lands for other crops and depletes precious water res...
Preprint
Full-text available
The upper and lower bounds of amplification factors of lumped finite element schemes are compared with nodal (integer or half-integer multiple of) eigen-value solutions of consistent finite element scheme at element and node levels of error analysis. The closeness or proximity between bounds on solutions of amplification factors and eigen-solutions...
Article
Sustainable Development Goals (SDGs) are the blueprints for achieving a sustainable future, and understanding the interlinkages among social, economic, and environmental fields is a key factor in accomplishing them. The goal of this study was to analyze a framework for sustainable economic growth considering the trade-offs among economic inequality...
Article
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Water poverty index (WPI) is widely considered a simple and clear tool to evaluate the effects of combined factors on water shortage and resources stress. In this research, we tried to focus on water tensions in the upstream part of the Karoon basin in Iran for analyzing the water status of the area. For this purpose, the required data were firstly...
Article
Estimates are that 70% of the global population will be concentrated in urban areas by 2050; therefore, CEFAS will be critical to sustain these future communities. This article briefly covered the challenges and opportunities for three types of CEPPS, including the opportunities for increasing the circularity of these systems. The short-term and lo...
Article
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The subject of this article is the dynamics of water in a soil pedostructure sample whose internal environment is subjected to a potential gradient created by the departure of water through surface evaporation. This work refers entirely to the results and conclusions of a fundamental theoretical study focused on the molecular thermodynamic equilibr...
Article
en The complexity of water, food and energy security is analysed from the perspectives of (i) water and food and (ii) water and energy and their interconnectivity and focuses ultimately on water as a primary input into processes, the entry point for participants of the Third World Irrigation Forum. The paper provides an overview of trends in water,...
Article
Highlights Quantitative evaluation was performed of dairy waste on soil water-holding capacity. Considering the soil variability on a farm is significant for management practices. Soil aggregate structure plays a pivotal role in studying the impact of waste reuse. Abstract . The livestock sector contributes about 40% of global agricultural output...
Preprint
The subject of this article is the dynamics of water in a soil pedostructure sample whose internal environment is subjected to a potential gradient created by the departure of water through surface evaporation. This work refers entirely to the results and conclusions of a fundamental theoretical study focused on the molecular thermodynamic equilibr...
Preprint
Full-text available
The subject of this article is the dynamics of water in a soil pedostructure sample whose internal environment is subjected to a potential gradient created by the departure of water through surface evaporation. This work refers entirely to the results and conclusions of a fundamental theoretical study focused on the molecular thermodynamic equilibr...
Article
Full-text available
The study objective was to develop and use the Water-Energy-Food Nexus Phosphate (WEF-P) Tool to evaluate the impact of Morocco's phosphate industry on water, energy, and food sectors of Khouribga, which is the representative phosphate mining region of Morocco. The developed WEF-P Tool enabled a trade-off analysis based on integrating supply-chain...
Article
Full-text available
The interdependent fundamental systems, water and energy, face abundant challenges, one of which is climate change that expected to aggravate water and energy securities. The hydropower industry benefits have led to its development and growth around the world. Nonetheless, climate change is expected to disturb the future performance of hydropower p...
Preprint
Full-text available
Abstract. The aim of the study is to apply the Nexus approach for conducting trade-off analysis between industrial and agricultural area, thus we developed Water-Energy-Food Nexus-Phosphate (WEF-P) Tool based on integrating the supply chain processes, transportation, and water-energy footprints. This study evaluated the impact of phosphate industry...
Chapter
Throughout this book, we note the interdisciplinary nature of nexus research: engaging the full range of physical, life, social, and engineering sciences and integrating them through sophisticated models. Because the objective of Nexus research is to support decision-making ranging from the level of an individual facility to the global Sustainable...
Chapter
In this chapter, we shift from “what is” to “what might be.” We begin by exploring some criteria for identifying real-world challenges that provide greater impetus and opportunity for applying integrated FEW science to real-world practice. There is the greatest opportunity for FEW Nexus applications to improve outcomes where there is a specific com...
Article
In the past decade, research on interconnected resource challenges has primarily focused on quantifying physical resource interconnections, and there is a growing focus on the social, economic, and policy dimensions of these interconnections. While the nature of the complexity of interconnected resource challenges resulted in emphasizing the need f...
Conference Paper
Full-text available
The objective of this study was to reveal the concept water, energy and food (WEF) nexus approach for sustainable agriculture. Water, energy and food are linked to one another since an output from one can be an input to another. Water can be used for irrigation purposes while it is also used for energy production. Some crops are also used for energ...
Article
Full-text available
Soil plays a pivotal role in enhancing global water and food security. Irrigation water constitutes more than 70% of the global water demand. The anticipated demographic increase and changing climate will impose more pressures on the global water and food systems. Therefore, and to achieve the target of “more crop per drop per area”, water manageme...
Article
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This study assesses the sustainability of crop production system in Gediz Basin, Turkey and develops forward-looking scenarios for optimal utilization and sustainable allocation of its resources using the water, energy, and food (WEF) Nexus holistic systems approach. Gediz basin data for the year 2014 are used to analyze the current situation and t...
Article
Farmers along the main reach of the Zarqa River Basin (ZRB) commonly utilize treated wastewater for irrigation. Deep percolation is expected to occur as a result of irrigation, and it is expected that preferential flow pathways may facilitate the downward movement of irrigation water. Therefore, the aim of this research was to investigate the susce...
Article
Full-text available
Nations, particularly those with well-established infrastructure, have started to look for new, innovative solutions to address the expected, inevitable high demand for primary resources. The WEF (water-energy-food) Nexus approach, which holistically considers the dynamic interlinkages between water, energy, and food resources, has come to the fore...
Article
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The Middle East and North Africa (MENA) region has the largest water deficit in the world. It also has the least food self-sufficiency. Increasing food imports and decreasing domestic food production can contribute to water savings and hence to increased water security. However, increased domestic food production is a better way to achieve food sec...
Article
The purpose of this study was to evaluate the use of the pedostructure concept to determine the soil available water capacity, specifically the field capacity (FC). Pedostructure describes the soil aggregate structure and its thermodynamic interaction with water. Specifically, this work compared the calculation of soil water-holding properties base...
Article
The San Antonio Region is home to a rapidly growing population with developing energy and agricultural sectors competing for water, land, and financial resources. Despite the tight inter-connectedness between water, energy, and food challenges, little is known about the levels of communication and coordination among the various officials responsibl...
Article
Full-text available
The aim of this study is to assess the impact of rice-based food security on water, energy, land, and CO2 emissions from a holistic point of view using the Nexus approach, which analyzes tradeoffs between water, energy, and food management. In Japan, both rice consumption and the area harvested for rice have decreased. Maintaining a high self-suffi...
Article
Full-text available
The Middle East and North Africa (MENA) region has the largest water deficit in the world. It also has the least food self-sufficiency. Increasing food imports and decreasing domestic food production can contribute to water savings and hence to increased water security. However, increased domestic food production is a better way to achieve food sec...
Article
Full-text available
Using a new paradigm of soil characterization and modeling in agro environmental sciences, named hydrostructural pedology, we were able to show that the "green water" concept of agronomists corresponds exactly to the pedostructural water concept which was physically defined in this paradigm. The water in the pedostructure of soils is composed of tw...
Article
Approaching water, energy, and food, as interconnected system of systems, as an alternative to traditional silo-based resources planning and management approaches continues to fall short of expectations of its research-backed benefits. The lack of nexus applications in policy and decision making can be related to numerous factors, with the main bar...
Article
One possible approach for addressing water and food insecurity involves food production, trade, and water used elsewhere. In this study, we introduce a water footprint for Korean rice products and focus on the impacts of localized cultivation and water supply systems on the water footprint. In addition, we discuss several studies on the application...
Article
Securing sources for water reuse and coordinating efforts of water governing agencies to do so are critical to realizing the potential of reused water to provide nearly 24% of the water demand of the San Antonio Region, defined as regions "L" and "K" by the Texas Water Development Board (TWDB). This research identifies key governance factors that c...
Article
The paper introduces a holistic framework that identifies the links between energy and other systems (water, land, environment, finance, etc.), and measures the impact of energy portfolios, to offer a solid foundation for the best sustainable decision making in energy planning. The paper presents a scenario-based holistic nexus tool, Energy Portfol...
Article
Full-text available
Soil aggregates structure (pedostructure) plays a pivotal role in regulating water and nutrient circulation, and consequently defines soil health, productivity, and water use efficiency. However, the soil aggregates structure is not currently considered in the quantification of soil-water holding properties. The authors applied a thermodynamic and...
Article
Moving resource management and allocation away from sectoral silos to a paradigm founded in integration and leveraging cross-sectoral and trans-disciplinary synergies will result in expanded opportunities for economic development and improved social well-being (Mohtar, 2017; Mohtar and Daher, 2017). Interventions to address complex resource challen...
Article
Full-text available
Conventional tillage (CT) cropping systems in semiarid regions of south Texas are associated with soil degradation and increasing fuel costs. The objective of the study was to evaluate the effects of no-till (NT) compared with CT on a dryland cotton (Gossypium hirsutum L.)–grain sorghum [Sorghum bicolor (L.) Moench] rotation system with respect to...
Article
The long-term effect of using treated wastewater is not clearly defined: some researchers argue that it is better than freshwater for the soil health; others disapprove, claiming that irrigation with unconventional water resources causes soil degradation. This study assesses the impact of irrigation with non-traditional water on the chemical and mi...
Article
This research investigates the relation between water, energy, and transportation systems, using the growing hydraulic fracturing activity in the Eagle Ford shale play region of southwest Texas in which the local water systems and road infrastructure were not designed for the frequent transport of water into the production site and of produced gas...
Article
Wastewater reuse is a practice that has been gaining attention for the past few decades as the world's population rises and water resources become scarce. Wastewater application on soil can affect soil health, and the manner and extent to which this occurs depends heavily on soil type and water quality. This study compared the long-term (15+ years)...
Chapter
The environmental challenges within drylands to providing sustainable water, food, and energy for an increased population test the capacity of integrated science to represent, apply, and project our knowledge to future forecasts. Scientists in this discipline need to provide (i) quantitative understanding of natural resources (land and water), thei...
Book
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The interconnection of water, energy, and food resources is complex, with the availability of these resources increasingly stressed by climatic, social, political, economic, demographic, technologic, and other pressures. Addressing these challenges requires a better understanding of the nexus formed by the interconnections between the resources. O...
Article
Heads of households, farmers, and experts in wastewater and agriculture in the West Bank, Tunisia and Qatar were engaged in consultations to understand their farming/gardening practices, perceived benefits and risks of using treated wastewater, willingness to pay for various qualities of water, safe handling practices, and knowledge of local organi...
Conference Paper
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Smart water networks integrate sensor data, computation, control, and communication technologies to enhance system performance, reliability and consumer satisfaction. The cyber-physical systems are built from, and rely upon, the tight integration of physical elements of real-time sensors and data integration and cyber algorithmic, control computati...
Article
Full-text available
The original version of this article, published in Current Sustainable Renewable Energy Reports, Volume 4, Issue 3, September 2017, inadvertently misspelled an author’s last name on the title page as Haimanote Baybil. The correct name is Haimanote Bayabil.
Article
Full-text available
The challenge of meeting increasing water, energy, and food needs is linked not only to growing demands globally, but also to the growing interdependency between these interconnected resource systems. Pressures on these systems will emerge to become hotspots with different characteristics, and will require a fresh look at the challenges existing bo...
Article
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The aim of this study is to analyze the impacts of food trade on food security and water-land savings in the Arab World in terms of virtual water trade (VWT). We estimated the total volume of virtual water imported for four major crops – barley, maize, rice, and wheat – from 2000 to 2012, and assessed their impacts on water and land savings, and fo...
Article
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Three forums were held between February 2015 and November 2016, bringing together Texas water experts from business, industry, government, academia, research, and the investment community in impartially facilitated sessions to determine ways to secure Texas’ water future through accelerating growth of infrastructure, technologies, research, educati...
Chapter
Uneven distribution of water, food, and energy (WEF) resources, together with demographic, geographic, political, and other natural constraints, burden WEF security plans in many regions of the world. Decision makers are under pressure to bridge the WEF supply-demand gap, and often propose reactive, rather than preventive, strategies that are assoc...
Article
The 2030 goal for the implementation of the Sustainable Development Goals (SDGs) gives rise to challenging questions stemming from the inherent interconnections and potential competition between primary resources. ‘Economic Growth’ and ‘Clean Water and Sanitation’ are intimately related SDGs. Access to quality water is critical to growth, but as ec...
Article
The interlinkage between the food, energy and water (FEW) supply systems, known as the nexus, has received considerable attention in recent years. Despite this intense interest, there is little work focusing on how to design a sustainable FEW system that can consistently meet its food, energy, and water demands. In an effort to better understand th...
Conference Paper
Full-text available
Due to disinfection process of desalinated water, distribution networks can carry disinfection by-products (DBPs) that may pose threats to human health, induce high rates of hematological responses, and cause multiple carcinogenic effects. This study was conducted to determine the correlation between chlorine dioxide (ClO2), chlorite (ClO2−), chlor...
Article
Full-text available
Purpose Existing assessment and decision support tools have limited application to real-world food-energy-water (FEW) Nexus challenges. Integrated assessment approaches are often discipline-specific or highly theoretical, lacking grounding in real-world FEW issues. Recent Findings FEW systems require application of integrated techniques that addre...
Article
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Purpose of Review The purpose of this review is to discuss challenges regarding assembly and use of water-energy-food (WEF) nexus data. Recent Findings WEF nexus analysis endeavors including nexus-wide-scoped data are relatively new although component data has been gathered for years. However, such data are not frequently comprehensive across all...
Article
Full-text available
Purpose of Review Soil is the medium for plant growth and the substrate for all biogeochemical and biogeophysical processes. Soil’s unique natural organization forms the foundation of any food–water–energy nexus system. It forms a habitat for billions of diverse micro, meso, and macrofauna and flora and is the basis of numerous ecosystem services e...
Article
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Purpose of Review The purposes of this paper are to examine the literature for common threads and attributes inherent to scientific-based communities of practice, and to identify challenges and potential solutions for building a community of scientists to address the water-energy-food nexus. Recent Findings The latest research suggests several gui...
Article
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Article
The aim of this study was to evaluate virtual water export through five crops (barley, rice, maize, soybeans,