Contributed by the Society for Conservation Biology 
A map showing the locations where plants have gone extinct in the U.S. and Canada since European settlers arrived.

Contributed by the Society for Conservation Biology A map showing the locations where plants have gone extinct in the U.S. and Canada since European settlers arrived.

Study: 65 plant species have gone extinct in U.S., Canada

More than 65 species of plants have gone extinct in the U.S. and Canada since European colonization, according to a new study.

The study was conducted by a group of 16 experts from across the U.S., including University of Washington Biology Professor Richard Olmstead. The study showed that far more plant species have gone extinct on the continent than previously documented.

Most of the plants that disappeared existed in the western parts of the country, and particularly the Southwest. Although Washington state did have two plants — the thistle milk-vetch and pale bugseed —- which went extinct in Eastern Washington.

Extinction likely occurred before the plants were analyzed by scientists, and were likely due to human impacts on changing land use, a press release from the University of Washington states. One reason suggested by the study for why more extinctions were found on the West Coast was that scientists had more of a change to examine plants before they were destroyed by human development.

Extinction rates have growing due to human causes. One study found plant and animal extinctions are happening.




Talk to us

Please share your story tips by emailing editor@seattleweekly.com.

More in News & Comment

West Point Wastewater Treatment Plant. Photo courtesy of Washington Department of Ecology.
EPA loans King County $96.8 million to prevent untreated water from spilling into Puget Sound

Loan comes a week after an over 10 million gallon overflow into the Puget Sound and Lake Washington.

Puget Sound renters will need housing assistance
Puget Sound renters will need housing assistance

Nonprofits, activists are expecting greater need as workers are laid off.

National Guard troops, pictured Jan. 11 at the state Capitol in Olympia, have been on standby in case of violent protests. (Photo by Roger Harnack, Cheney Free Press)
At the state Capitol, a quiet day amid heightened security

There were no protests or arrests as troopers patrolled and the National Guard assumed a lower profile.

West Point Treatment Plant in Seattle. Photo courtesy of King County
Power outages cause massive wastewater spill into Puget Sound, Lake Washington

King County estimates millions gallons of untreated wastewater overflowed into surrounding waters.

Democrats in the Washington State House are proposing to pay for transportation improvements partly by raising the gas tax by 18 cents. (Sound Publishing file photo)
House Democrats lay out massive $26B transportation package funded by gas tax hike

An 18-cent gas tax increase and a fee on carbon emissions would fund new roads and more.

File photo
Report: 70 percent of gun deaths in Washington are attributable to suicide

Research done at The Firearm Injury and Policy Research Program at Harborview… Continue reading

June 2018 algae bloom. Photo courtesy of Department of Ecology
Human-caused ‘dead zones’ threaten health of Puget Sound

Wastewater treatment plants account for about 70% of the excess nutrients.

Robert Allen, 61, had never been homeless in his life before 2019, when he lost his housing. The chef has been trying to get back on his feet, and hopes to open a nonprofit and make hot sauce. File photo
King County implements 0.01% sales tax to raise money for housing the homeless

Officials plan to buy hotels, motels and nursing homes for conversion into permanent housing.

Teaser
Social media site Parler returns after registering with Sammamish company

The right-wing social media website is not being hosted by Epik, but registered its domain.

Most Read