Knowledge for better food systems

Showing results for: Water security / scarcity

Image: ales_kartal, Harvest harvester tractor, Pixabay, CC0 Creative Commons
31 July 2018

Farmers in Britain and other European countries have been affected by the ongoing heatwave and dry weather. Oxfordshire farmer Lesley Chandler told the Guardian, “It’s like a tinderbox out here… Just a spark could set it all alight” (read more here). Combine harvesters can create sparks if their blades hit a stone.

10 July 2018

The European Commission's Joint Research Centre has published a new World Atlas of Desertification, which provides maps of different factors relevant to desertification such as land use, human appropriation of biological productivity, virtual water use, smallholder agriculture and livestock production.

Image: Sumita Roy Dutta, Ice stupas near Phyang monastery, Wikimedia Commons, Creative Commons Attribution-Share Alike 4.0 International
11 June 2018

A project in Ladakh, India, creates “ice stupas”, a form of artificial glacier, to complement intermittent water flow from retreating natural glaciers. Water from streams is sprayed from vertical pipes during the winter, freezing into pointed mounds, which melt slowly throughout the year, irrigating crops in the summer.

Image: olle svensson, avocado, Flickr, Creative Commons Attribution 2.0 Generic
4 June 2018

Some avocado plantation owners in Chile are illegally diverting water from rivers and leaving local villagers without enough water, according to a feature in the Guardian. Demand for avocados has increased by 27% in the UK in the last year. Activist Veronica Vilches claimed that local people are getting sick because of the lack of water, while activist Rodrigo Mundaca says that the water provided to resident by trucks is of poor quality.

Image: Hydrosami, Drought land dry mud BOUHANIFIA Algeria, Wikimedia Commons, Creative Commons Attribution-Share Alike 4.0 International
26 May 2018

Researchers from Nasa have used satellite data to identify areas where freshwater reserves have increased or decreased. The study found that in 14 regions, the changes were likely due to human factors (e.g. groundwater pumping), and in 8 areas, the changes were caused mainly by climate (e.g. drought or ice-sheet melting). Freshwater availability decreased in several areas including northern India, north-east China, the Caspian and Aral Seas and some of the Middle East.

Photo: USDA NRCS, Flickr, Creative Commons License 2.0
21 January 2018

This article examines global overuse of freshwater resources and how more sustainable irrigation practices could impact other environmental and developmental targets in the SDGs. It finds that the main likely effects are 1) increased food prices due to lower productivity and/or production costs as water prices increase, and 2) cropland expansion and associated extra GHG emissions of 0.87 gigatonnes of carbon.

28 November 2017

This new book, edited by Laura M. Pereira, Caitlin A. McElroy, Alexandra Littaye and Alexandra M. Girard, presents a diversity of collaborations between various governance actors in the management of the Food-Energy-Water (FEW) nexus and analyses the ability of emergent governance structures to cope with the complexity of future challenges across FEW systems worldwide.

30 October 2017

Countries attending FAO’s 40th conference in Rome discussed climate change and food security from different perspectives linking climate-action, nutrition and migration to the 2030 Agenda for Sustainable Development. Four side events related to climate change took place during this conference, which can now be watched online.

Photo: Chris Happel, irrigation at dawn, Flickr, Creative Commons License 2.0 generic.
19 April 2017

This research identifies the major crops and countries contributing to groundwater depletion. The authors found that 11 percent of unsustainable groundwater used for irrigation is embedded in international crop trade. They highlight the main exporters and importers of these crops, and the associated risks for local and global food and water security.

Photo credit: Neil Palmer, CIAT, Flickr, Creative Commons License 2.0
29 November 2016

This study models the water demand of land acquisitions in Africa as a function of crop choice, local climate, and irrigation scenarios. Its authors distinguish between green and blue water, equating to water from rainfall and that provided to crops by irrigation respectively. 

18 October 2016

The ‘2016 Food, Water, Energy and Climate Outlook’ by the MIT Joint Program on the Science and Policy of Global Change finds that even if commitments from the  COP21 climate agreement are kept, many staple crops in various regions are still at risk of crop failures through extreme events, but at the same time, yields in many regions are projected to increase.

20 April 2016

This report entitled 'Mitigating risks and vulnerabilities in the energy-food-water nexus in developing countries' analyses global nexus interconnections (such as the dependence of food systems on energy at every stage of the food value chain) and identifies key challenges for food, energy and water security, which include economic and population growth, resource depletion, environmental degradation, climate change and globalisation.

Photo credit: U.S Department of Agriculture (Flickr, creative commons)
10 March 2016

In this paper by researchers from Germany, Kenya, Australia and Sweden, a modeling approach is taken to ascertain the efficacy of applying improved water management techniques on a large scale to increase yields to help meet global demand for food.

16 February 2016

The book provides an analysis of impacts of climate change on water for agriculture, and the adaptation strategies in water management to deal with these impacts.

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