top
Newswire
Calendar
Features
From the Open-Publishing Calendar
From the Open-Publishing Newswire
Indybay Feature
Wed Feb 15 2017 (Updated 03/21/17)
Monarch Butterfly Population Drops by Nearly One Third
Wed Feb 15 2017 (Updated 03/21/17)
Number of Monarchs Overwintering in California Remains Low
The annual overwintering count of monarch butterflies released on February 9 confirms Monarch numbers fell by nearly one-third from last year’s count, indicating an ongoing risk of extinction for America’s most well-known butterfly. Scientists report that this year’s population is down by 27 percent from last year’s count, and down by more than 80 percent from the mid-1990s. Additionally, a survey of monarch butterflies overwintering in California shows that the Western population has not rebounded.

A recent study by the U.S. Geological Survey concluded that there is a substantial probability that monarch butterflies east of the Rockies could decline to such low levels that they face extinction. Researchers estimate the probability that the monarch migration could collapse within the next 20 years is between 11 percent and 57 percent. This year’s drastic decline is attributed in part to more extreme winter storms that killed millions of monarchs last March in Mexico’s mountain forests, where 99 percent of the world’s monarchs migrate for the winter.

On the West Coast of California, volunteers with the Xerces Society’s Western Monarch Thanksgiving Count visited 253 sites and tallied a total of 298,464 monarchs—a fraction of the 1.2 million monarchs recorded in the late 1990s. Key sites such as Pismo Beach and Natural Bridges saw lower populations this year, and all but one of the 15 sites which have been continuously monitored since 1997 had lower counts than in the prior year. Monarchs from as far away as Idaho, Utah and Arizona converge to spend the winter in tree groves along the Pacific coast from Mendocino County, California, to northern Baja, Mexico. This gathering of monarchs provides a unique opportunity to gauge the health of the monarch population from the western United States.

Read More: Monarch Butterfly Population Drops by Nearly One-third | Number of Monarchs Overwintering in California Remains Low

Related Features: California Monarch Butterflies Sites in Need of Protection | Lawsuit Launched for Endangered Species Act Protection of Monarch Butterflies
02/13/18 Report Reveals Rapid Growth of Homeless Encampments Across America Front Page | Health, Housing & Public Services | California | U.S. | Santa Cruz Indymedia02/10/18 Worldwide Actions Commemorate Ahed Tamimi’s 17th Birthday, Demand Freedom Front Page | Police State & Prisons | Anti-War | Womyn | East Bay | California | U.S. | International | Palestine02/07/18 Political Education Panel on Resisting the Repression of Black Dissidents Front Page | Police State & Prisons | Racial Justice | East Bay02/07/18 Opposition Grows to Trump's Plan for Offshore Oil Drilling in Pacific and Arctic Front Page | Environment & Forest Defense | Central Valley | California | U.S. | Santa Cruz Indymedia02/05/18 From the Panther 21 to 21st Century Revolutions Front Page | Police State & Prisons | Racial Justice | U.S.02/04/18 Black Disabled Activist, Elder, Black Panther and Community Leader Fights Eviction Front Page | Racial Justice | Health, Housing & Public Services | East Bay02/03/18 San Francisco Rallies for Afrin as Solidarity Demonstrations Spread Front Page | Global Justice & Anti-Capitalism | San Francisco | International02/03/18 Signature Gathering to Begin at Rent Control Campaign Kickoff and Party Front Page | Health, Housing & Public Services | Government & Elections | Santa Cruz Indymedia02/03/18 Monarch Census on California Coast Reveals Lowest Number of Butterflies in Recent Years Front Page | Environment & Forest Defense | California | U.S. | Santa Cruz Indymedia02/02/18 Bay Area Antifascists Burn Identity Evropa Banner Hung on Bay Bridge Front Page | Racial Justice | Global Justice & Anti-Capitalism | San Francisco | Immigrant Rights01/22/18 Women Across North America, Europe, Middle East, Africa Rise Up for the 2018 Women's March Front Page | Racial Justice | LGBTI / Queer | Womyn | Central Valley | San Francisco | East Bay | California | U.S. | International | Immigrant Rights | Santa Cruz Indymedia
Related Categories: Americas | California | International | Santa Cruz Indymedia | U.S. | Environment & Forest Defense | Front Page
Western Monarch Butterflies Continue to Decline The Xerces Society Fri Feb 2nd 9:36pm
Ptrotest electoral fraud in Honduras Allan Fisher Sun Dec 17th 9:52pm
Rally to Save Temporary Protected Status for Immigrants Karl Kramer (1 comment) Sat Dec 16th 8:04pm
Protest Electoral Fraud in Honduras Allan Fisher Thu Dec 14th 2:11pm
Honduras forum Allan Fisher Sat Dec 9th 9:15pm
CISPES End of Year Celebration Allan Fisher Sat Dec 9th 9:04pm
Rally to protest electoral fraud in Honduras Allan Fisher (1 comment) Fri Dec 1st 8:16am
LA Binational Conference To Cancel NAFTA and Unite Workers Of Mexico and the US Organizing Committee For Binational Conference Mon Nov 27th 4:14am
Liberated Lens film night & fundraiser for Puerto Rico: "TAINO DACA (I AM)" Liberated Lens film collective Mon Nov 13th 1:44pm
More News...