The new study, conducted in cooperation with researchers at Portland State University, adds evidence to the critical state of the world's glaciers.
"While the shrinkage in Montana is more severe than some other places in the US, it is in line with trends that have been happening on a global scale," said Portland State geologist Andrew G. Fountain in a statement.
As to the short-term ramifications, researchers warm that the shrinking glaciers will almost certainly have an impact on local wildlife.
"The park-wide loss of ice can have ecological effects on aquatic species by changing stream water volume, water temperature, and run-off timing in the higher elevations of the park," said lead USGS scientist Daniel Fagre.
The park, established in 1910, attracted over 2 million visitors in 2007, according to the US National Park Service.
Lisa McKeon, a USGS scientist, has documented glacier change since 1997.
"Tracking these small alpine glaciers," she said, "has been instrumental in describing climate change effects on Glacier National Park to park management and the public."
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