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Stefan Lovgren

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Research Scientist in River Ecosystems, University of Nevada, Reno

Alligator gar can grow to gargantuan sizes. Zeb Hogan

July 25, 2023

In search of the world’s largest freshwater fish – the wonderfully weird giants lurking in Earth’s rivers

Stefan Lovgren, University of Nevada, Reno

Freshwater megafish numbers have fallen by 94%, according to one study.

Establishing the financial worth of a river’s fish is complicated when many people don’t sell the fish they catch. Tang Chhin Sothy/AFP via Getty Images

April 4, 2023

How much is the world’s most productive river worth? Here’s how experts estimate the value of nature

Stefan Lovgren, University of Nevada, Reno

Putting a dollar value on nature has staunch opponents who say it’s morally wrong, but without it, building dams and other infrastructure can run roughshod over vital ecosystems.

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Location: Reno, Nevada, U.S.
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Joined January 9, 2023