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Severe water scarcity affects 2/3rd of global population, says FAO chief
Thursday, 22 March, 2018, 08 : 00 AM [IST]
Two-thirds of the global population lives under conditions of severe water scarcity for at least a part of the year. This was stated by Jose Graziano da Silva, director general, Food and Agriculture Organization (FAO), in a video message for the eighth essay of the World Water Forum in Brasilia.

The crisis has a particularly heavy impact on people who depend on agriculture, and some, especially the poorest, may see no alternative to migrate and in search of better livelihoods. “But migration should be a choice, and not the only remaining option,” he added.

Global water use has increased by a factor of six over the past century, twice the rate of population growth, and its scarcity is now a looming human challenge due to a host of factors, ranging from climate change and pollution to lack of capacity and infrastructure.

The United Nations (UN) agency presented new research, done with Global Water Partnership and Oregon State University, USA, on the nexus between water and migration at a high-level panel at the forum recently.

Titled Water stress and human migration, it reviewed over 100 detailed studies, analysing their results in terms of demographics, surface temperatures and rainfall histories. The agency also contributed to a chapter on nature-based solutions for managing water availability in the UN report launched at the Forum.

“Agricultural adaptation strategies affect many people’s need to migrate and should be explicitly factored into climate change and other policies. Analysing water scarcity trends and engaging in preparedness are particularly valuable, allowing time to intervene to mitigate pressure for forced migration,” said Eduardo Mansur, director, Land and Water Division, FAO.

“Enabling proactive adaptation is a more effective and sustainable strategy than offering a reactive humanitarian response in the face of large-scale distress,” he  added.

A key finding of the report is that more information on the dynamics of the migration-water linkage is needed for India, Central Asia, the Middle-East and the Central Sahel - all areas that are expected to be among the earliest to face above-average surface temperature increases and intensifying water scarcity in the next 30 years.

South and Southeast Asia are also relatively understudied given their long coastlines and low-lying river deltas, and while water scarcity in South America and North Asia is less intense, evidence about migration pressures there is scant.

The findings
Water stress typically refers to situations in which demand is not met due to a combination of access issues and decline in the availability and/or the quality of water.

It tends to increase as a result of higher temperatures, growing demand from the agricultural, energy and industrial sectors, and may reflect greater rainfall extremes or vulnerability to flooding as well as more frequent drought-like conditions. Inadequate infrastructure can exacerbate shortfalls in water quantity and quality.

“While some studies demonstrate a correlation between water stress and higher outmigration, the causal interaction is still not clearly understood,” said the report.

“It is essential to make sure the interaction between water scarcity and migration does not become one of mutual aggravation,” said Olcay Unver, deputy director, land and water, FAO.

“Migration is a universal and common process and linked to development in multiple ways, and FAO strongly backs policies that help make it a choice, not a necessity. Evidence suggests that public investments in agriculture adaptation can attenuate the adverse drivers of rural outmigration,” the report noted.

While timely interventions may be able to mitigate involuntary migration, the impact of migrants on water stress in the places they go also warrants closer attention, especially as informal settlements often entails form of land use that make inefficient use of water, damage local hydrological cycles or disrupt traditional systems that incentivise water conservation.

At the same time, migrants can positively contribute to water management as well as development in both origin and host communities through good practices, skills and knowledge transfer, and the use of remittances.

The concept of environmental migrants is increasingly drawing attention, and more data is required both to understand and pre-empt trends in a timely way.

That is a message FAO and the International Organization of Migration are emphasising as co-chairs of the Global Migration Group’s efforts in 2018 to help craft a Global Compact for Safe, Orderly and Regular Migration.
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