Water – the under-reported resource crisis

by frog

Such is the very interesting article by Fred Pearce at the Guardian. (as yet not online) After stating that biofuels are only just beginning to contribute to the food crisis, he describes how water, which underpins all agriculture, is the truly scarce supply. Here are a few excerpts:

The great slow-burning, under-reported resource crisis of the 21st century is water.
Climate change, over-consumption and the criminally inefficient use of this most basic raw material are all to blame. I wrote a book three years ago called When The Rivers Run Dry – because many of the world’s biggest rivers are indeed running dry.

We are using them to death. And with two-thirds of the water abstracted from nature round the world going to irrigate crops, water shortages equal food shortages.

Consider. The two underlying causes of the world food crisis are falling supplies and rising demand on the international market. Add in speculation, panic and hoarding and you have a perfect food storm.

Why falling supplies? Because of major droughts in Australia, one of the world’s big three suppliers, and Ukraine, another major exporter. Those droughts bite hard because both countries are already using their water reserves to the limit. Australia’s wheat exports are 60 per cent down; rice exports are 90 per cent down.

He goes on to say:

In recent years, much of the global food trade has become a proxy trade in water. Or rather, the water needed to grow the food. “Virtual water,” some economists call it.

The virtual water 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.

Till two years ago, the world’s biggest supplier of virtual water was Australia. It exported a staggering 70 cubic kilometres of water a year in the form of crops, mainly food. Drought has more than halved that figure. It may never recover.

Right now, we in Europe can get the food we need – at a price. But we are not immune. Britain imports large amounts of food. It works out at 40 cubic kilometres of virtual water a year, or more than twice the water we use annually within our own borders.

In Britain, we don’t often think about water shortages, except when there is a hosepipe ban. We should. Because even as it rains at home, the world water crisis is encroaching.

I dare say we are a net exporter of ‘virtual water’ and will likely continue to be so. But this does not mean that the crisis will not reach our shores through other means – such as financial or civil strife.

frog says

Published in Campaign | Economy, Work, & Welfare | Environment & Resource Management by frog on Thu, April 24th, 2008   

Tags: , , , , , , , , ,

More posts by frog | more about frog