Scientists reach the tallest tree in the Amazon: about 90 meters high and 10 meters thick | environment

The giant tree, whose summit rises above the canopy in the Irataburu River Nature Reserve in northern Brazil, is a Denisia Excelsa with a height of 88.5 meters and a diameter of 9.9 meters.

Researchers first saw the tree in satellite imagery in 2019, and a team of researchers, ecologists and local guides attempted to access it that same year. But after a ten-day trek over rough terrain, exhausted, with few supplies and a team member sick, they are forced to return.

Three more expeditions to the remote area of ​​the Gary Valley on the border between Amapá and Para states have yielded more giant trees, including the largest Brazil nut ever recorded in the Amazon, a 66-meter-high specimen.

But the massive Dinizia excelsa remained elusive until the expedition from September 12-25, during which the researchers traveled 250 kilometers by boat and more than 20 kilometers on foot through the mountain forest to reach the tree.

The group took samples that will be analyzed to see, among other things, how much carbon they are storing. They also want to know the exact age of the tree — at least 400 to 600 years old, according to forest engineer Diego Armando Silva of the Federal University of Amapá.