Landscape-wide approaches integrating agriculture, forestry, energy, and water are considered key to address complex environmental problems and to avoid trade-offs. The objective of this paper is to analyse how knowledge production through multi-stakeholder dialogues on water, landscapes, forests, and agriculture can inform governance and the management of landscapes. Multi-stakeholder learning dialogues and platforms (MSPs) were established related to water and natural resources management, complemented by targeted reviews, to establish a shared understanding of the drivers of change and impacts on the hydrology of landscapes and ecosystem services. The MSP dialogues illustrate the need to address water as an integral part of landscape management and governance to achieve the wide range of the Sustainable Development Goals related to water and food security, climate action, life on land, as well as sustainable production and consumption, equality, and strong institutions. The co-production of knowledge through MSPs contributes to continuous learning that informs adaptive management of water flows in landscapes, above and below ground, as well as in the atmosphere. It helps to build a shared understanding of system dynamics and integrate knowledge about hydrology and water flows into policy recommendations. Co-production of knowledge also contributes to stakeholder participation at different levels, inclusiveness, and transparency, and to water stewardship.

Exploring interactions between factors is a critical step to understand, quantify and govern the WEF-Nexus. However, current research mainly focuses on mapping causal loops and the hierarchy structure; equations in interaction exploration have been largely ignored. Using the panel data of China’s 30 provinces from 2005 to 2016, this paper adopts a simultaneous equations model (SEM) to evaluate intensities between related factors in the local WEF-Nexus. We define a local WEF-Nexus as containing core, peripheral and interactive sub-nexuses, and decouple the core sub-nexus from the supply, consumption and waste disposal processes. Results show that effective irrigated area, secondary industry rate and crop sown area are key positive influencing factors in the WEF subsystem, with positive impact coefficients of 1.0426, 0.6986 and 1.149, respectively. Food production (-0.303) and chemical fertilizer used per sown area unit (-0.3129) are key negative factors in the WEF subsystem. Additionally, urban green land (0.4436) and total population (0.5815) exert specific influences on the water and energy subsystems, with a 1% increase in urban green land resulting in a 0.4436% increase in water consumption. The system boundary, two positive feedback loops and seven nexus points are identified, with total groundwater pumping being the only nexus point exerting an holistic impact across the WEF equations. The results in this paper complement recent nexus modeling work, and give a better understand of interaction mechanism in China’s local WEF nexus, with useful implications for future policy development.

The spatiotemporal change of cultivated land can exert significant effects on food production and the associated water consumption. The quantification of these effects is meaningful for guiding relevant policies. However, few studies have explored systematic methods assessing changes of food production and water consumption and the relations between them, caused by cultivated land change. This study developed new spatially explicit datasets for constant food crop yield and constant food crop water consumption, combining agricultural statistical data, the China-AEZ model, and the GIS spatial analysis method, and estimated the impact of cultivated land change on food crop production, food crop water consumption and food-water relations characterized by two major indicators, i.e., crop water productivity (CWP) and green water proportion (GWP), in China during 1990–2015. The results showed that the increase of approximately 0.80% in cultivated land area in China resulted in a decrease of approximately 0.37% in average food crop yield per unit area, an increase of approximately 1.97% in blue water consumption per unit area (ETbₗᵤₑ), and continuous decreases in both total water consumption per unit area (ETₐ) and green water consumption per unit area (ETgᵣₑₑₙ), with overall rates of 2.41% and 3.11%, respectively, at the national scale from 1990 to 2015. Concurrently, the average CWP continuously increased with an overall rate of 2.06%, while the average GWP continuously decreased with an overall rate of 0.86% at the national scale. A low-level coupling trend of food-water relations was concluded, together with a negative environmental effect. The food-water relations were getting even worse in major cultivated land expansion areas and during the later period of 2000–2015. The findings of this study can be useful for providing a deep understanding of food-water relations corresponding to cultivated land change and giving suggestions for the sustainable development of cultivated land and the integrated management of water resources.

Bioinorganic chemistry is found as a sizzling field in today’s era. It deals with chemistry amongst the heavy metals with natural resources, i.e., air, soil, water, plant byproducts (foods), and environmental essences. The aim of this research is to determine the concentration of heavy metals present in the food waste water sample and to study the environmental effects of metal ion concentration. To conduct the research work, the physicochemical parameters and levels of five heavy metals of food waste water samples were collected from five sampling points of renowned hotels, restaurants, canteens, and confectionaries of a state of India and assessed using the standard analytical procedure. Sampling was carried out from January 2017 up to December 2017. The physicochemical parameters were determined such as pH, temperature, turbidity, conductivity, total dissolved solids, total suspended solids, total alkalinity, biological oxygen demand, chemical oxygen demand, dissolved oxygen, total organic carbon, sulphate, nitrate, and phosphate. The heavy metal concentration was determined by using the UV-spectrophotometer, and the results were compared with the standards prescribed by the WHO, BIS, ICMR, and municipal authorities. The results obtained in the physicochemical analysis revealed that a few parameters were found beyond limits, and the metal ion concentration (iron and zinc) results were found above the permissible limits set by the CPCB (Central Pollution Control Board), ICMR, BIS, and World Health Organization (WHO), most especially, effluent from point P1. It was concluded that all the effluents required further treatment before releasing them into the water body or land to prevent pollution. The obtained results reveal that waste water used for irrigation and farming of nearby areas and water drained from restaurant kitchens were considerably polluted and not suitable for aquatic organisms, irrigation, and agricultural purposes.

PURPOSE: The French Nutri-Bébé 2013 study aimed to assess the nutritional intake of infants and young children in comparison with the recommendations of the 2013 European Food Safety Authority (EFSA). METHODS: This cross-sectional study enrolled a random sample of families selected according to the Quota sampling method. A 3-day dietary record was conducted and supervised by two face-to-face interviews. All foods and beverages consumed were qualitatively and quantitatively reported in a diary, and their composition calculated using a food composition database. RESULTS: A total of 1035 non-breastfed children were included. Formula was abandoned early, amounting to approximately 50% of the total food intake at 7 months in 50% of infants and 22% at 1 year. A similar trend was observed for specific complementary foods. After 1 year, 50% of children consumed cow’s milk, which was semi-skimmed in 88% of cases. Drinking water intake was low. Protein intake reached 1.4 times the average requirements before 3 months, 2 times at 8–9 months, and > 4 times at 30–35 months. Fat intake was below the EFSA adequate intake (AI) in > 90% of children. Alpha-linolenic acid intake was equal to or greater than the AI in all infants < 3 months, 85% of children at 6 months, 34% at 12–17 months, and 8% >24 months. Regardless of age, docosahexaenoic acid (DHA) intake was less than the AI. CONCLUSION: Strong discrepancies are observed between the actual and recommended intake in young, non-breastfed children namely, a high-protein intake, and a low fat intake, especially DHA.

Hybrid hydropower and floating photovoltaic power generation has far-reaching effects on the intertwined water, food and energy (WFE) nexus, but the complementary operation is fundamentally challenging especially under high uncertainties of hydro-meteorological conditions. This study proposed an artificial intelligence-based WFE system-overarching solution driven by hybrid hydro-floating photovoltaic power generation for promoting nexus synergies. A multi-objective optimization model grounded upon the Grasshopper Optimization Algorithm was developed to simultaneously maximize hydro-floating photovoltaic power output, the ratio of water storage to reservoir capacity, and the ratio of water supply to water demand. The Shihmen Reservoir watershed and its WFE system in northern Taiwan constituted the case study. The results demonstrated that the proposed optimization model could significantly improve synergistic benefits of the WFE nexus by reaching 13%, 13.3% and 15.1% in water storage, food production and hydro-floating photovoltaic power output, respectively. The optimal tilt angles of floating photovoltaic installation would vary between −11.9° (Summer) and 44.3° (Winter). This study opens up new perspectives on green energy production expansion while stimulating WFE nexus synergies in support of policy-makers with feasible schemes on floating photovoltaic deployment in the interest of social sustainability. In consequence, new niches are exploited for floating photovoltaic deployment and give rise to impact mitigation concerning hydro-meteorological uncertainties on WFE nexus management.

Water is a fundamental component in primary food production, whether it be rainfall, irrigation used to water crops, or for supplying drinking water for animals, while the amount of water in the soil determines it capacity to support machinery and animals. We identify that UK agriculture is exposed to five main water-related risks: agricultural drought, scarcity of water resources, restrictions on the right to abstract water, excess soil water, and inundation. Projected milder, wetter winters and hotter, drier summers by the end of the century will change the frequency, persistence, or severity of each of these risks. This paper critically reviews and synthesizes the scientific literature on the impact of these risks on primary food production and the technological and managerial strategies employed to build resilience to these changing risks. At the farm scale, the emphasis has been on strategies to build robustness to reduce the impact of a water-related risk. However, collaborative partnerships allow for a more optimal allocation of water during times of scarcity. Enhancing cross-scale interactions, learning opportunities, and catchment-scale autonomy will be key to ensuring the agricultural system can build adaptive and transformational capacity

Water is the most essential resource for food production and socioeconomic development worldwide. Currently, industry and agriculture are the most water consuming activities, creating high levels of pollution, and intensifying the scarcity of water especially in arid regions. The term “hydroSOStainable products” has been used to define those foodstuffs grown under irrigation strategies that involve optimized water management. A study to understand how consumers perceive options to save water in the food chain and how to identify the water sustainable products by a logo, was conducted in Brazil, China, India, Mexico, Spain and USA, with 600 consumers per country. In all countries, consumers think that the food categories in which it is possible to save the most water are those linked directly to agricultural products: (i) “grains and grain products” and (ii) “vegetables, nuts and beans”. Also, consumers do not associate processed products, such as snacks, with high water consumption, even though they come from agricultural products such as grains and require more processing. The logo was positively rated by consumers, especially by young generations. There is a need to properly inform consumers about water sustainability to gain their confidence in the hydroSOS logo.

Dissertation (MSc)--University of Pretoria, 2019. | As mining and industry continue to impact agricultural lands and waterways, and as competition for access to fresh water increases, the agricultural industry must adapt to grow crops in increasingly polluted lands using ever more contaminated water sources. As a result, the likelihood that crops grown under such conditions could pose a food safety risk is set to rise. This research assesses the extent to which potentially hazardous trace elements, As and Pb, present in irrigation water at concentrations deemed acceptable by the Irrigation Water Quality Guidelines, impact the food (and feed) safety of crops. Four crops are investigated under two glasshouse trials. The first assesses foliar absorption of As and Pb under irrigation to the aboveground biomass and the second assesses root uptake of As and Pb via the effects of medium- to long-term irrigation programs. Results indicate that under such trace element loaded conditions, some crop parts exceed food (or feed) safety thresholds, with concentrations ranging from 0.01 mg.kg-1 to 33.38 mg.kg-1 As, and 0.01 mg.kg-1 to 62.41 mg.kg-1 Pb, on a dry mass basis. Leafy vegetables present the highest food safety risk. Therefore, if international food safety standards for fresh produce are to be adhered to, the Irrigation Water Quality Guidelines for As and Pb should be critically reviewed so as to negate all possible future contamination of fresh produce as a result of irrigation inputs. A food (and feed) safety consequence matrix is proposed as a means of modelling the effect of irrigating according to the Irrigation Water Quality Guidelines on food (and feed) safety. | Plant Production and Soil Science | MSc | Unrestricted

The increasing demands of the population and the need for development obliged the optimal use and adaptive management of the watershed resources. Accordingly, it is necessary to adopt comprehensive measures to reach sustainable development goals. This objective can be achieved by the application of interdisciplinary and professional approaches through establishing dynamic and optimal balance in supply and demand resources. However, such important optimization approaches have been rarely practiced at the watershed scale. The present study has been therefore formulated to apply a linear water-energy-food nexus optimization for the Shazand watershed, Markazi Province, Iran. This approach was applied for planning 14 crops planted in orchard, irrigated farms, and rain-fed farms, between 2006 and 2014, and targeting water-energy-food nexus index (WEFNI) maximization. The connections among the water, energy, and food were then evaluated through determining the amount of consumption, mass productivity, and economic productivity of water and energy. The results of WEFNIs revealed that almond has the highest WEFNI with values of 0.92, 0.76, 0.76, 0.83, 0.86, 0.86, 0.87, 0.87, and 0.88. Whilst, potato with WEFNI of 0.05, 0.05, 0.05, 0.06, 0.09, 0.10 and 0.11, sugar cane with WEFNI of 0.10 and cucumber with WEFNI of 0.13 had the lowest scores and the corresponding lowest performance among the study crops. The outcomes of optimization study explained that the current situation of land use in the Shazand Watershed is unsuitable to minimize water and energy consumption and maximize benefit. The results can be used as an effective tool for designating proper soil and water resource management strategies in the region.