A long-term study across Amazonia reveals an unexpected trend. The Amazonian trees are increasing in girth, with average growth of 3.2 per cent per decade. This is a striking signal that the world’s largest rainforest is responding towards environment change.
The Role of Carbon Dioxide
The scientists suggest that rising atmospheric carbon dioxide may be fuelling this growth. This phenomenon is known as CO₂ fertilisation. Elevated levels of the gas enhance photosynthesis, allowing trees to store more carbon and size expansion. Crucially, the increase is seen across both massive canopy giants and smaller understory species. This indication is a broad ecological trend.
Beyond the Numbers
While larger trees hold vast carbon stocks, researchers warn that this should not be mistaken for a permanent climate solution. Amazon rainforest is a dynamic network of organisms, soils, microbes and microclimates, all interacting over centuries.
A Call for Preservation
Deforestation, habitat fragmentation, fires and shifting rainfall patterns could erode these gains. Large old trees are especially vulnerable, once they are lost, they take centuries to replace.
Scientists focus on a simple truth which is to protect Amazonian forests. This climate approach is essential. Bigger trees are absorbing more carbon today, but without strong conservation, tomorrow’s forest giants may never reach their full stature.
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