Amazon Trees Are Growing Larger Every Decade, and Scientists Say This Defies Logic

Written by Jefferson Augusto

Published on 02/10/2025 at 19:07

Updated on 02/10/2025 at 19:13

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Study Reveals That Large Trees Grew About 3% Per Decade In The Last 30 Years, An Apparent Positive Effect Of Climate Change That May Not Last Forever

The Amazon, known as the “lungs of the planet” for its ability to absorb huge amounts of carbon dioxide (CO₂), is central to the fight against global warming.

Responsible for capturing up to a quarter of the CO₂ absorbed by all terrestrial vegetation, it remains a vital line of defense against the advance of climate change.

Still, news about the region tends to be negative. Over the last 40 years, the forest has lost more than 121 million acres of vegetative cover, an area equivalent to the territory of Spain.

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The Unexpected Effect Of Excess CO₂

The research analyzed 188 permanent plots in the Amazon rainforest and found that the increase in CO₂ levels in the atmosphere has been stimulating tree growth.

While the effect is observed in species of all sizes, the results were most pronounced in large trees. Growth was measured by the basal area, the cross-section of the trunk at breast height, and revealed that these “giants” are managing to take advantage of the increased availability of carbon to grow.

This finding challenges the so-called “large tree loss hypothesis,” which suggested that sturdier specimens would be more vulnerable to intense droughts and wind events. On the contrary, at least for now, they are showing remarkable resilience.

“Large trees are critical for absorbing CO₂ from the atmosphere, and this study confirms that,” said Esquivel-Muelbert in a statement. “Despite concerns that climate change may harm the Amazon, the fertilizing effect of CO₂ is still present. This shows the remarkable resilience of the forest, at least for now.”

Rapid Growth, Uncertain Future

The Amazon is not the only forest showing changes related to climate. A 2023 study by the University of New Brunswick in Canada concluded that boreal forests are expected to grow up to 20% faster by 2050, driven by rising temperatures and longer growing seasons.

Nevertheless, scientists warn that this growth does not guarantee a secure future. The increase in size and extra carbon absorption could be offset by other critical factors, such as deforestation, wildfires, insect outbreaks, and extreme weather events. In 2024 alone, according to Reuters, the world recorded one of the largest losses of tropical forest in history.

“The fate of large trees is now a crucial issue,” said Oliver Phillips, co-author of the study and ecologist at the University of Leeds. “They will only remain healthy if the Amazon ecosystem remains connected. Deforestation multiplies threats, and if it continues, it will eventually kill these giants.”

The Critical Mission Of Forests

If the good news is that Amazonian trees are still able to resist and even grow amid environmental stress, the warning is clear: their survival depends on drastically reducing destruction. Keeping the Amazon standing is essential not only for Brazil but for the entire planet’s climate balance.

Tropical forests, along with boreal and temperate forests, will continue to play a decisive role in carbon absorption as humanity seeks a green energy transition. However, as researchers emphasize, this will only be possible if humans halt the devastation and allow nature to continue performing its vital work.

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Amazon Trees Are Growing Larger Every Decade, and Scientists Say This Defies Logic

Study Reveals That Large Trees Grew About 3% Per Decade In The Last 30 Years, An Apparent Positive Effect Of Climate Change That May Not Last Forever

The Unexpected Effect Of Excess CO₂

Rapid Growth, Uncertain Future

The Critical Mission Of Forests

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Amazon Trees Are Growing Larger Every Decade, and Scientists Say This Defies Logic

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Dissatisfied with seeing people sleeping on the street, a man named Ryan Donais started building small mobile homes so that homeless people can escape the cold, each equipped with a bed, running water, electricity, and heating.

Workers were opening a modern road in Dover when they found, 6 meters below the asphalt, a 3,500-year-old boat made of stitched oak and plant fibers.

A giant brown band visible from space, approximately 8,850 kilometers long, connected Africa to America in the Atlantic Ocean, and satellites revealed that it is neither land nor pollution, but the largest accumulation of seaweed in the world, which broke records in 2025.

Engineers want to carve through Africa with a giant canal to bring water from the world’s second-largest river to a dying lake on the edge of the Sahara Desert that has already lost 90% of its water.

Consumers eat six times more chicken than in the 1960s, global meat supply quadruples in 60 years, and FAO report reveals the invisible cost on the plate: livestock could drive 80% of the increase in agricultural emissions over the next decade.

Two 17-year-old Kenyans use coconut shells, corn cobs, and recycled materials to create an exhaust filter that reduces 93.3% of pollutant particles and wins an environmental award in Africa.

Motorcyclist sees excavator arriving at the edge of a river in Bosnia, calls neighbors in minutes and turns a hydroelectric project into a resistance lasting more than 10 years with five expired concessions.

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