Bolivia's lake Poopo dries up and scientists fear refill unlikely

Scientists say the one-time lake, which sprawls across Bolivia's sun-drenched, high-altitude altiplano, has fallen victim to decades of water diversion for regional irrigation needs. And a warmer, drier climate has made its recovery increasingly unlikely.

"It's like a perfect storm," says Jorge Molina, a researcher with the Universidad Mayor de San Andres. "Every year that passes the situation gets worse."

The lake, Bolivia's second largest, is very shallow, and has traditionally ebbed and flowed, according to both scientists and the lake's long-time Aymara inhabitants.

Valerio Rojas, who once made a living from fishing the lake, says village elders tell of the lake recharging every 50 years. But looking out across the parched, white-rimmed salt flat that remains, he has his doubts.

"Will the lake fill again? With this climate change and pollution, it seems to me that the weather can no longer be predicted," Rojas said. "In our Aymara language it is said that: 'Our mother earth is tired'."

Scientists are also growing skeptical. Molina says the Andes are outpacing the global average temperature rise, especially during the day, which means evaporation has ramped up, making it especially hard for a shallow lake - and its flora and fauna - to survive.

“It is no longer a functional lake. A lake that dries up too often is no longer functional for fauna, flora and biodiversity," Molina told Reuters.

The drought is also driving away the communities that once lived along its banks, says Benedicta Uguera, an indigenous woman from Untavi who once raised livestock on an island in the lake.