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WATER POLITICS

As reported in an interesting new online magazine, Yale’s Environment 360, there is a firm connection between the world’s current food shortages and both the over consumption of water & its increasing scarcity,  As the article notes:

“…After decades in the doldrums, food prices have been soaring this year, causing more misery for the world’s poor than any credit crunch… But what are the underlying trends that have sown the seeds for this perfect food storm?

Biofuels are part of it, clearly….  But there is something else going on that has hardly been mentioned, and that some believe is the great slow-burning, and hopelessly underreported, resource crisis of the 21st century: water.

….We are using these rivers to death. And we are also pumping out underground water reserves almost everywhere in the world. With two-thirds of the water abstracted from nature going to irrigate crops — a figure that rises above 90 percent in many arid countries — water shortages equal food shortages.

Consider the two underlying causes of the current crisis over world food prices: falling supplies from some of the major agricultural regions that supply world markets, and rising demand in booming economies like China and India.

Why falling supplies? Farm yields per hectare have been stagnating in many countries for a while now. The green revolution that caused yields to soar 20 years ago may be faltering. But the immediate trigger, according to most analysts, has been droughts, particularly in Australia, one of the world’s largest grain exporters, but also in some other major suppliers, like Ukraine. Australia’s wheat exports were 60 percent down last year; its rice exports were 90 percent down.

…Some press reports have recently suggested that China is being sucked dry to provide water for the Beijing Olympics. Would that it were so simple. The Olympics will require only trivial amounts of water. China’s water shortages are deep-seated, escalating, and tied to agriculture. Even hugely expensive plans to bring water from the wetter south to the arid north will only provide marginal relief.

The same is true of India, the world’s second most populous country. Forty years ago, India was a basket case. Millions died in famines. The green revolution then turned India into a food exporter. Its neighbor Bangladesh came to rely on India for rice. But Indian food production has stagnated recently, even as demand from richer residents has soared. And the main reason is water.

With river water fully used, Indian farmers have been trying to increase supplies by tapping underground reserves. In the last 15 years, they have bought a staggering 20 million Yamaha pumps to suck water from beneath their fields. Tushaar Shah, director of the International Water Management Institute’s groundwater research station in Gujarat, estimates those farmers are pumping annually to the surface 100 cubic kilometers more water than the monsoon rains replace. Water tables are plunging, and in many places water supplies are giving out.

…More and more countries are up against the limits of food production because they are up against the limits of water supply. Most of the Middle East reached this point years ago. In Egypt, where bread riots occurred this spring, the Nile River no longer reaches the sea because all its water is taken for irrigation.

A map of world food trade increasingly looks like a map of the water haves and have-nots, because in recent years the global food trade has become almost a proxy trade in water — or rather, the water needed to grow food. “Virtual water,” some economists call it. The trade has kept the hungry in dry lands fed. But now that system is breaking down, because there are too many buyers and not enough sellers.

According to estimates by UNESCO’s hydrology institute, the world’s largest net supplier of virtual water until recently was Australia. It exported a staggering 70 cubic kilometers of water a year in the form of crops, mainly food. With the Murray-Darling Basin, Australia’s main farming zone, virtually dry for the past two years, that figure has been cut in half.

The largest gross exporter of virtual water is the United States, but its exports have also slumped as corn is diverted to domestic biofuels, and because of continuing drought in the American West.

….For too long, we have seen water as a cheap and unlimited resource. Those days are coming to an end — not just in dry places, but everywhere. For if the current world food crisis shows anything, it is that in an era of global trade in “virtual water,” local water shortages can reverberate throughout the world — creating higher food prices and food shortages everywhere.”