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The curious case of the missing extinctions

 Botanist William Nichols calls Rock Rimmon a “botanical hotspot.”  It was once home to species of crabgrass now deemed extinct.
Taylor Quimby
/
NHPR
Botanist William Nichols calls Rock Rimmon a “botanical hotspot.” It was once home to species of crabgrass now deemed extinct.
Digitaria laeviglumis, now deemed extinct
Photographer: CyberFlora NO
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Digitaria filiformis var. laeviglumis (Fernald) Wipff SEINet Portal Network. 2022. Accessed on October 13.
Digitaria laeviglumis, now deemed extinct

When it comes to protecting the biodiversity of Planet Earth, there is perhaps no greater failure than extinction. Thankfully, only a few dozen species have been officially declared extinct by the U.S. Fish and Wildlife Service in the half century since the passage of the Endangered Species Act.

But, hold on. Aren’t we in the middle of the sixth mass extinction? A recent reportfrom the World Wildlife Fund estimates that, on average, animal populations have dropped by nearly 70% since 1970. Shouldn’t the list of extinct species be way longer?

Well, yeah. Maybe.

Producer Taylor Quimby sets out to understand why it’s so difficult to officially declare an animal extinct. Along the way, he compares rare animals to missing socks, finds a way to invoke Lizzo during an investigation of an endangered species of crabgrass and learns about the disturbing concept of “dark extinctions.”

Featuring Sharon Marino, Arne Mooers, Sean O’Brien, Bill Nichols and Wes Knapp.

The ivory-billed woodpecker. Possibly extinct.
“Birds & Nature” Marble, Charles C; Higley, William Kerr (1896) Via American Museum of Natural History Library & Biodiversity Heritage Library
The ivory-billed woodpecker. Possibly extinct.

Links

Check out this 2005 feature from the CBS Sunday Morning archives: In search of the Ivory-billed Woodpecker

…And this onefrom 60 minutes, also from 2005, pulled from the archive and rebroadcast after the proposed delisting.

Nate’s favorite ivory-billed story came from NPR, and featured songwriter Sufjan Stevens.

Watch the U.S. Fish and Wildlife Service virtual public meetingabout the proposed delisting of the ivory-billed woodpecker on January 26th, 2022.

Read this 2016 paper that outlines, among other things, the consequences of being waitlisted under the ESA: “Taxa, petitioning agency, and lawsuits affect time spent awaiting listing under the US Endangered Species Act.”

From Simon Fraser University, “Lost or extinct? Study finds the existence of 562 animal species remains uncertain.”

More on the unknown status of Cambodia’s national mammal, the kouprey.

Wes Knapps’ paper on “Dark Extinctions” among vascular plants in the continental United States and Canada.

Read about theextinction of smooth slender crabgrass, the first documented extinction in New Hampshire.

Taylor Quimby is Supervising Senior Producer of the environmental podcast Outside/In, Producer/Reporter/Host of Patient Zero, and Senior Producer of the serialized true crime podcast Bear Brook.
Outside/In is a show where curiosity and the natural world collide. Click here for podcast episodes and more.

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