Changing sounds reveal impact of Amazon fires on animal life

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egret in the Amazon

Sound recordings can give a sense of the health of Amazon ecosystems

Ricardo Lima/Getty Images

Round-the-clock acoustic recordings have been used to monitor the effects of logging and fires on biodiversity in tropical forests.

Danielle Rappaport at the University of Maryland and her colleagues used historical satellite data to select sites in the southern Brazilian Amazon that had experienced logging or forest fires over the past few decades. They placed sound recorders at the sites in September and October 2016 to try to capture the acoustic markers of ecosystem degradation.

The aim was to develop a way to measure …

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