Latin America's water needs could foster collaboration to curb warming

Ask the mayor of a city in the Andes mountains about the outcome of December’s climate negotiations in Copenhagen, and you will probably receive a perfunctory reply. Ask about the plummeting levels of local freshwater reservoirs, and you will get an earful.

The reason goes to the heart of the disagreements that split the industrialized and developing countries and prevented a long-term, binding agreement to curb global warming. But it also offers a path toward a more productive approach to north-south collaboration on climate change.

In Latin America, water is more tightly linked to human potential and economic competitiveness than in any other part of the world. The region has roughly 31% of the planet’s freshwater resources, while being home to only 8% of its population. This huge water advantage has enabled Latin America to get 68% of its electricity from hydroelectric sources, compared with a global average of less than 16%.

The region’s key commodity exports — in agriculture and mining — depend on extraordinary quantities of water. About half the world’s beef exports and nearly two-thirds of all soya come from Latin America, where they are produced cheaply, thanks to typically abundant rainfall.

But after the severe droughts of recent years, this water advantage has become a stark vulnerability. In 2008, Argentina lost 1.5 million head of cattle and nearly half its wheat crop to drought, while hydroelectric output in the most populous part of Chile plunged by 34%.

LA Times