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Amazon rainforest greens up in the dry season

re of Amazon health, because in the disturbed areas we don't see the greenness increase during the dry season," Huete said. " A lot of people are interested in the rainforest because of the humongous amount of carbon it stores. A very slight change in the forest's activity will make a tremendous change in the global carbon cycle."

Saleska and his colleagues and other research teams had conducted studies at local sites in the Amazon that suggested the intact rainforest grows more during the dry season. Those studies analyzed data from flux towers, which measure the seasonal gas exchange by vegetation. The new research confirms the local studies and indicates that the greener-in-the-dry-season pattern is basin-wide.

"With the satellite, we can say the whole Amazon basin is doing something," Huete said.

The team's next step, Huete said, is to see if other tropical rainforests behave the same way and how the rainforests behave in El Niño years. He added, "We also want to look harder at the transition zones at the edge of the rainforest to see whether different kinds of disturbance cause different growth patterns."


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Source:University of Arizona


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