The finding surprised researchers from the National Park Service, the University of California at Davis and the U.S. Geological Survey, who conducted tests at 75 locations in the waterways of Alaska’s Brooks Range. The rivers and streams in the range appeared to rust and became cloudy and orange over the past five to 10 years, according to the study published in the journal Communications: Earth & Environment.
“At several of the locations it happened, the most drastic increases were between 2017 and 2018 and they coincided with the warmest years on record at that point,” said Poulin.This discoloration has been linked to “dramatic declines” in aquatic life, raising concerns about how the continued melting of permafrost will affect communities that rely on those waterways for drinking and fishing.
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