From: Washington State University
Published September 7, 2017 03:15 PM

Monarch butterflies disappearing from western North America

Monarch butterfly populations from western North America have declined far more dramatically than was previously known and face a greater risk of extinction than eastern monarchs, according to a new study in the journal Biological Conservation.

“Western monarchs are faring worse than their eastern counterparts,” said Cheryl Schultz, an associate professor at Washington State University Vancouver and lead author of the study. “In the 1980s, 10 million monarchs spent the winter in coastal California. Today there are barely 300,000.”

Schultz adds, “This study doesn’t just show that there are fewer monarchs now than 35 years ago. It also tells us that, if things stay the same, western monarchs probably won’t be around as we know them in another 35 years.”

Read more at Washington State University

Photo: Cheryl Schultz, associate professor in conservation biology at WSU Vancouver.  Credit: Washington State University

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