Smithsonian: UC student interprets bison 'mummy'

Smithsonian talked to Joshua Miller, an assistant professor of geology in UC's College of Arts and Sciences, and UC doctoral student Abby Kelly. They are using isotopic analysis and other tools to study extinct populations of animals that lived during the Pleistocene's ice ages.

Miller has studied ancient ecosystems around the world, from Yellowstone National Park in Wyoming to Amboseli National Park in Kenya.

"By studying mummies and fossils from periods prior to the Anthropocene, we can track how populations and ecosystems changed through time in the absence of outsize human impacts,” Miller told Smithsonian. “This allows us to think more critically about how we impact living populations and informs strategies for how we preserve species and ecosystems today.”

Researchers are interested in the Pleistocene in part because it was a time of dramatic changes in climate.

"Bison are relative newcomers to North America, having migrated across the Bering Land Bridge about 200,000 to 170,000 years ago," Kelly told Smithsonian.

Today, North America is home to wood bison and American bison.

Read the Smithsonian article.