Scientific FrontlineApr 28
Experimental exposure to elevated CO2 demonstrates that understory trees in the Amazon initially increase their carbon uptake and growth, though this long-term capacity is ultimately constrained by soil nutrient availability.
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https://www.sflorg.com/2026/04/eco04282601.html
Amazon understory forests show short-term boost in CO₂ uptake – but this comes at a cost

Experimental increases in CO₂ stimulated plant growth are facilitated by re-distributed root systems to extract nutrient resources more efficiently