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monarch butterflies
Fears of Monarch Butterfly Extinction as Numbers Plummet 22% in Annual Count
"Despite heroic efforts to save monarchs by planting milkweed, we could still lose these extraordinary butterflies by not taking bolder action," Tierra Curry, a senior scientist at the Center for Biological Diversity (CBD), said in a statement.
"Monarchs were once incredibly common," she added. "Now they're the face of the extinction crisis as U.S. populations crash amid habitat loss and the climate meltdown."
Renowned for its epic annual migrations from the northern U.S. and southern Canada to Florida, California, and Mexico, monarchs have suffered a precipitous plunge in population in North America this century.
According to the U.S. Fish and Wildlife Service (FWS), the number of eastern monarchs fell from around 384 million in 1996 to 60 million in 2019, and in the West their numbers declined from 1.2 million in 1997 to fewer than 30,000 last year.
As CBD noted:
At the end of summer, eastern monarchs migrate from the northern United States and southern Canada to high-elevation fir forests in central Mexico. Scientists estimate the population size by measuring the area of trees turned orange by the clustering butterflies...The eastern population has been perilously low since 2008.
Last year, the International Union for Conservation of Nature formally listed the monarch butterfly as endangered, citing critical threats posed by the climate emergency, deforestation, pesticides, and logging.
(Graphic: Center for Biological Diversity)
In the United States, the Trump administration in 2020 placed monarchs on the wait list for consideration for Endangered Species Act protection. FWS has until next year to make a final listing determination.
"It is not just about conserving a species, it's also about conserving a unique migratory phenomenon in nature," said WWF Mexico general director Jorge Rickards. "Monarchs contribute to healthy and diverse terrestrial ecosystems across North America as they carry pollen from one plant to another."
"With 80% of agricultural food production depending on pollinators like monarchs, when people help the species, we are also helping ourselves," he added.
'Grim' Report Warns 40% of US Animals at Risk of Extinction
"It's suicidal of us to pretend that business as usual is more important than safeguarding the natural world we all depend on."
"Two-fifths of our ecosystems are in trouble. Freshwater invertebrates and many pollinators, the foundation of a healthy, functional planet, are in precipitous decline," she pointed out. "Understanding and addressing these risks is critical if we are to forestall devastating consequences for the biodiversity that humanity needs to survive."
Noting that roughly a third of plants are in danger, the report—Biodiversity in Focus: United States Edition—explains that "this is an alarming general finding, but certain taxa face even greater threats. For example, 48% of cactus species are at risk of extinction, while around 200 tree species (about 20%) are at risk of extinction."
"Of the hundreds of grass species that form our nation's great prairies and marshes, about 19% are at risk of vanishing forever," the document states. "Preventing plant extinction is essential to maintaining ecosystem function and the services that wildlife and people rely upon."
As for animals, the analysis says that "as a group, species associated with fresh water, including amphibians, snails, mussels, crayfish, and many aquatic insects, have the highest percentage of at-risk species, highlighting the importance of conservation strategies to protect freshwater ecosystems."
"Among pollinators, bees are particularly threatened, with 37% of assessed species at risk," the report continues. "The conservation needs of these, and other invertebrate species, are often overlooked, yet many invertebrates are integral to maintaining the ecological functions of freshwater and terrestrial ecosystems."
Ecosystems across the country face potential "range-wide collapse due to extensive threats such as land-cover conversion," the publication warns. "Tropical ecosystems in the U.S. are all under substantial risk, but account for relatively small proportions in number and area."
"Temperate grasslands, boreal grasslands, and shrublands stand out among highly threatened ecosystems that extend over vast areas of the country, with 51% of the 78 grassland types known to be at risk of range-wide collapse," the report adds. "Temperate forests, boreal forests, and woodlands have also experienced multiple pressures, leading to an at-risk status for 40% of the 107 types of native U.S. forests."
(Image: NatureServe)
NatureServe president and CEO Sean T. O'Brien stressed that "we are currently experiencing and causing the Sixth Extinction—the mass extinction of species across the planet. NatureServe's data highlight where the threats are right here at home."
"The plants, animals, and ecosystems found in our state, tribal, and federal lands are key components of our cultural and natural heritage," he said. "We should be proud of the biodiversity in our backyard and should prioritize protecting what is here, now."
The report is just the latest to emphasize the growing threat to various species. Others include the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, updated in December during a summit in Montreal that ultimately produced what many experts and advocates agree is a "weak" global framework to protect biodiversity.
The IUCN update revealed "a perfect storm of unsustainable human activity decimating marine life around the globe," Bruno Oberle, the group's director general, said at the time. He warned that "we urgently need to address the linked climate and biodiversity crises, with profound changes to our economic systems, or we risk losing the crucial benefits the oceans provide us with."
The NatureServe analysis provoked similar demands for action. As Reuters reported:
Vivian Negron-Ortiz, the president of the Botanical Society of America and a botanist with the U.S. Fish and Wildlife Service, who was not involved in the NatureServe report, said there is still a lot scientists do not know and have not yet discovered about biodiversity in the United States, and that NatureServe's data helped illuminate that darkness.
More than anything, she sees the new data as a call to action.
"This report shows the need for the public to help prevent the disappearance of many of our plant species," she said. "The public can help by finding and engaging with local organizations that are actively working to protect wild places and conserve rare species."
Tierra Curry, a senior scientist at the Center for Biological Diversity, said in a statement Monday that "this grim assessment adds to the mountain of science showing that we're creating an extinction crisis."
"It's suicidal of us to pretend that business as usual is more important than safeguarding the natural world we all depend on," Curry declared, spotlighting some potential solutions including the Extinction Prevention Act and Recovering America's Wildlife Act.
"Grassland loss is the biggest U.S. environmental disaster that gets the least attention," she said. "Conversion of grasslands to suburban sprawl and pesticide-intensive agriculture is a primary reason we've lost 3 billion birds and why we could lose monarch butterflies and vital pollinators."
"By taking nature for granted we've pushed natural systems to the brink of collapse," Curry continued. "We've been so neglectful for so long, but we can create a different world that doesn't exploit nature and vulnerable human communities for never-ending sprawl and consumption."
Infrastructure Bill Would Help Protect Bees and Butterflies
America's pollinators face an imperiled future due to decades of exposure to toxic pesticides, disappearing habitat and a changing climate.
But there's hope, and it comes from an unexpected place: the Biden administration's infrastructure agenda.
In addition to supporting traditional infrastructure such as roads and bridges, the current version of the Infrastructure Investments and Jobs Act in Congress contains funding for pollinator-friendly roadsides, as well as provisions to revegetate areas devastated by invasive species.
Throughout the United States, there are 10 million acres of prime space for habitat along roadsides. Why not use it to rebuild populations for butterflies and bees? That's the opportunity before us, and the infrastructure bill would provide $2 million annually to relevant agencies for pollinator-friendly plantings. Grants of up to $150,000 would go toward much-needed projects for "planting and seeding of native, locally appropriate grasses and wildflowers, including milkweed." Other techniques to protect pollinators detailed in the bill--yes, it's that thorough--are as simple as reducing mowing frequency, timing mowing to avoid disturbing pollinators, and using pesticides more judiciously.
Roadside milkweed. Photo: Katie McVey/USFWS
None of these concepts are new. Earlier this year, similar language appeared in the Monarch and Pollinator Highway Act of 2021, a bill introduced by Rep. Jimmy Panetta (D-Calif.) and Sen. Jeff Merkley (D-Ore). Several years before that, the U.S. Department of Transportation issued best management practices for this type of roadside habitat. On a more local level, nine state departments of transportation--including those in California, Iowa and Florida--have led the way on these common-sense projects.
Another piece of the infrastructure bill would provide $50 million annually in grants to eliminate, control and prevent invasive plants, which throw native ecosystems out of balance. The Invasive Plant Elimination Program would prioritize funding to revegetation programs utilizing native plants and wildflowers, including pollinator-friendly species. This strategy offers a boon to pollinators and other wildlife in these healing ecosystems.
And they need the help. America's pollinators face an imperiled future due to decades of exposure to toxic pesticides, disappearing habitat and a changing climate. In addition to monarchs, one report found that more than half of native bee species in North America are in decline, including the rusty patched bumblebee. We need infrastructure that prioritizes these creatures.
Smooth coneflower growing under transmission lines. Photo: Caroline S. Krom, U.S. Fish and Wildlife Service, NC Sandhills Safe Harbor Coordinator
If we're wise, we'll invest in pollinator habitats for several reasons. First, given that insect pollinators contribute tens of billions of dollars of value to our agriculture, it makes economic sense to ensure they're abundant and healthy themselves. Roadside habitats near farms can increase pollination services and boost crop yields while reducing crop pests in the process.
Second, losing pollinators--especially native species--can have permanent ecological repercussions. Tremors in the web of life caused by the extinction of our pollinators affect animals that depend on them for food and nearly 90% of all flowering plants, including those that have co-evolved with these pollinators.
Third, losing monarch butterflies and other pollinators would make our lives less rich and less beautiful.
Endangered mission blue butterfly (Icaricia icarioides missionensis). Photo: Stuart Weiss/USFWS
Congress can help. While building roads and a more robust infrastructure system, Congress should also vote for the bill so we can build roadside habitats and increase the resiliency of pollinator populations. Providing diverse, healthy habitat will meet a long-neglected need for the thousands of native pollinators in the country. Along the way, it will help put these vital insects to work--for nature's benefit and for our own.
The work to save our pollinators will not end with the infrastructure bill, but with this added to the protections already in place, we can halt the monarch's flutter toward extinction.
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