After three years of planning, five expeditions and a two-week trek through dense jungle, scientists have reached the tallest tree ever found in the Amazon rainforest, a towering specimen the size of a 25-story building. The giant tree, whose top juts out high above the canopy in the Iratapuru River Nature Reserve in northern Brazil, is an angelim vermelho (Dinizia excelsa) measuring 88.5m tall and 9.9m around — the biggest ever identified in the Amazon, scientists said.
Researchers first spotted the enormous tree in satellite images in 2019 as part of a 3D mapping project. A team of academics, environmentalists and local guides mounted an expedition to try to reach it later that year.
However, after a 10-day trek through difficult terrain, exhausted, low on supplies and with a team member falling ill, they had to turn back.
Photo: AFP
Three more expeditions to the reserve’s remote Jari Valley region, which sits at the border between the states of Amapa and Para, reached several other gigantic trees.
However, the enormous angelim vermelho remained elusive until the expedition last month, when researchers traveled 250km by boat up rivers with treacherous rapids, then another 20km on foot across mountainous jungle terrain to reach it.
One person on the 19-member expedition was bitten by what the team doctor believes was a poisonous spider.
It was worth it, said forest engineer Diego Armando Silva of Amapa Federal University, who helped organize the trip.
“It was one of the most beautiful things I’ve ever seen. Just divine,” Silva said. “You’re in the middle of this forest where humankind has never set foot before, with absolutely exuberant nature.”
After camping under the massive tree, the group collected leaves, soil and other samples, which would be analyzed to study questions including how old the tree is — at least 400 to 600 years, Silva estimated — why the region has so many giant trees and how much carbon they store.
Around half of the weight of the region’s giant trees is carbon absorbed from the atmosphere — fundamental in helping curb climate change, Silva said.
However, despite its remoteness, the region’s giants are under threat. Angelim vermelho wood is prized by loggers, and the Iratapuru reserve is being invaded by illegal gold miners infamous for bringing ecological destruction, Jakeline Pereira from environmental group Imazon said.
“We were so thrilled to make this find,” Pereira said. “It’s super important at a time when the Amazon is facing such frightening levels of deforestation.”
The past three years has seen average annual deforestation in the Brazilian Amazon increase by 75 percent from the previous decade.
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