Big Trees in Amazon More Climate-Resistant Than Previously Believed

The biggest trees in the Amazon are growing larger and more numerous, according to a new study that shows how an intact rainforest can help draw carbon dioxide out of the atmosphere and sequester it in bark, trunk, branch and root. From a report: Scientists said the paper, published in Nature Plants on Thursday, was welcome confirmation that big trees are proving more climate resilient than previously believed, and undisturbed tropical vegetation continues to act as an effective carbon sink despite rising temperatures and strong droughts.

However, the authors warned this vital role was increasingly at risk from fires, fragmentation and land clearance caused by the expansion of roads and farms. 'It is good news but it is qualified good news,' said Prof Oliver Phillips from the University of Leeds. 'Our results apply only to intact, mature forests, which is where we are watching closely. They suggest the Amazon forest is remarkably resilient to climate change. My fear is that may count for little, unless we can stop the deforestation itself.'

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