Ponce is head of the Uirapuru indigenous community which has allowed local farmers to produce crops on one-third of its 44,500-acre (18,000-hectare) reservation in southwestern Mato Grosso state.

The one-tenth or less share of the harvests has helped the Pareci natives to buy cars and smartphones, replace hammocks with beds and equip their thatched huts with widescreen TVs, freezers and broadband Internet antennas.

"We're surrounded by farmers. We can't live off hunting anymore. The animals are gone," he said, sitting in a hammock in his thatched hut.