The concern about the disappearance of monarch butterflies has intensified. In the northern spring of 2013, conservation organizations reported that the amount of Mexican forest the butterflies occupied was at its lowest in 20 years. The World Wildlife Fund, in partnership with a Mexican wireless company and Mexico’s National Commission of Protected Areas, found nine hibernating colonies occupied almost 3 acres during the 2012-13 winter, a 59% decrease from the previous winter. Illegal logging in the Mexican forests, where the butterflies spend the winter, is being blamed for the shrinking acreage. Climate change is also thought to contributing to the butterfly population crash; it is causing the disappearance of milkweed, the only plant on which monarchs lay their eggs and on which their caterpillars feed. Monarch butterfly populations are known and loved for their beauty and long-distance migrations. Follow the links below to learn more about monarch butterflies.
The number of acres that monarch butterfly colonies occupied this past winter in the Mexican forest was at a 20-year low. Photo and caption via The (Westchester County, N.Y.) Journal News via USAToday.Travis Brady is director of education and living collections at Greenburgh Nature Center in Greenville, NY. He is featured in an interesting video at USA Today, talking about what monarchs need and why their population is thought to be declining. Photo via Joe Larese, The (Westchester, N.Y.) Journal News via USAToday.
Bottom line: Monarch butterfly habitat in Mexican forests is at a 20-year low, due, it’s thought, to illegal logging. Climate change may also be contributing to the butterflies’ demise.
Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.
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