Tue. Apr 20th, 2021

“If a tree lives 500 years, it carries the carbon assimilated and stocked for the last 500 years,” says Giuliano Locosselli, a researcher at the University of São Paulo (USP) in Brazil. “If instead, the tree lives 300 years, it means the carbon will be stocked by 200 years less. So we are accelerating the carbon cycle, and the result is that we have more carbon in the atmosphere.” Trees have always been our main allies in the fight against global warming, thanks to their capacity to take the carbon dioxide out of the air and store it for dozens or even hundreds of years in their trunks, branches, leaves and roots. Our recklessness, however, has sabotaged this capacity. That’s the conclusion of two studies published at the end of last year, which show that rising temperatures, resulting from our runaway greenhouse gas emissions, are reducing the longevity of the trees in many forests worldwide, including in the Amazon, the largest tropical forest on the planet. The studies — one led by Locosselli and published in the , and the other by Roel Brienen of the University of Leeds in the U.K., published in  — look at the links between rising temperatures and tree growth and mortality rates. Locosselli and Brienen have worked together for many years and are co-authors on both studies, alongside 20 other researchers from Brazil, Chile, Argentina, Canada, the U.S., the U.K., Germany, France, Italy and Finland. Both studies use data from the International Tree-Ring Data…This article was originally published on Mongabay
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