Climate change crisis for rainforests ( Quirin Schiermeier,2009, Nature, doi:10.1038/news.2009.136 )

Drought could turn carbon sinks into sources.

The tropical forests of South America, Africa and Asia take up and release huge amounts of carbon each year. On the whole, they are a significant 'sink' for atmospheric carbon dioxide, but their future role in sequestering the greenhouse gas is uncertain. If rainforests are hit by serious drought, as they were in the Amazon basin during 2005, they could turn into a carbon 'source' sooner than we thought. So, are we in danger of losing our closest allies in the fight against climate change?

How is climate change affecting the growth of the forests?

So does climate change mean that rainforests will not be carbon sinks in the future?

How large a carbon sink are the world's tropical forests at the moment?

How reliable are these figures?

How long will old forests continue to get better at taking up CO₂?

What does all this mean for forest management and the politics of climate change?

It is an interesting and complex scientific question about the carbon banlance in the tropical

forests!

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