16
Jan
Western Monarchs Experience Catastrophic Declines Over the Last Year
(Beyond Pesticides, January 16, 2019) Preliminary counts in California indicate the western monarch butterfly population dropped 86% from 2017 to 2018. The survey is a result of an annual effort by volunteer citizen scientists, organized by the nonprofit organization Xerces Society. If the trend from the initial sample (97 sites) holds true, the population of overwintering butterflies is estimated to be less than 30,000 – 0.05% of its historical size. Full and vetted results will be published in late January.
To get an accurate count of monarch populations, volunteers follow a monitoring guide, which recommends beginning a count on a still, cool, and dry morning so that monarchs are still clustered together. Volunteers count a small cluster of monarchs and then extrapolate that number to arrive at a total for the larger cluster they’re observing. Citizen science has been crucial to understanding the decline of monarchs and insects worldwide. As covered by The New York Times, the current “Insect Apocalypse†has largely been documented by volunteers.
The dismal numbers recorded this year are potentially disastrous, as the predicted extinction threshold for overwintering western monarchs is a population of 30,000. However this threshold, based on population densities needed for thermoregulation and mating during winter, will only be verified once the western monarch’s yearly migration patterns cease. And at that point it will likely be too late to save the wild population.
Using statistical analysis of citizen science data, a 2017 study posited the extinction risk of monarch butterflies in western North America to be ~50-70% within 20 years, and ~65-85% within 50 years. The precarious situation of the butterfly population can be attributed to both recent events and long-term stressors, including pesticide use.
To start, western monarch breeding populations in March and April were historically low. Art Shapiro, PhD, a distinguished professor of evolution and ecology at the University of California, Davis, noted in September 2018, “I have not seen a wild egg or caterpillar of the monarch this entire calendar year at low elevations. Not one.â€
The weather in California was less than favorable, beginning with late rainy season storms in March. A severe and extended wildfire season – the most destructive on record – caused a smoky atmosphere and reduced habitat. The historic drought that established conditions for the massive wildfires had a negative impact on butterfly populations in its own right.
Overall, the western monarch population has declined by 95% since the 1980’s. Significant contributors to the dramatic decline are habitat loss, pesticide use (both insecticides and herbicides), and climate change.
As we confront the potential extinction of western monarchs, a swift and drastic response is necessary. In 2017, a number of environmental groups urged the Trump Administration to expand protections and efforts for monarch butterflies. The administration has not responded to this call to action, and continues to roll back federal protections. Interior Department Deputy Secretary David Bernhardt has referred to the implementation of the Endangered Species Act (ESA) as an “unnecessary regulatory burden†on citizens and companies. Regardless, advocates say it is important to keep placing pressure on elected officials, especially those at the local level, to protect biodiversity.
The Xerces Society states, “Key areas to focus habitat protection and restoration efforts include overwintering sites and breeding habitat in California, particularly the Central Valley and foothills. Elsewhere in the western states, important breeding grounds for monarchs can be found in eastern Washington and parts of Oregon, as well as the Snake River Plain of Idaho, areas where habitat has likely been lost.â€
Crucial to long-term recovery of monarchs and other pollinators is comprehensive adoption of organic land care practices. Agricultural lands comprise 77% of all prospective monarch habitat and are therefore critical to foster pesticide-free habitat for pollinator populations. As it stands, many agricultural fields employ a range of toxic pesticides, such as systemic neonicotinoid insecticides, which make the pollen and nectar of plants toxic to pollinators, or genetically engineered crops, which tolerate repeated glyphosate exposure and through drift indirectly lead to the loss of milkweed on which monarchs depend.
Beyond Pesticides has many resources that support monarchs and other declining pollinator populations on the individual level, including Managing Landscapes with Pollinators in Mind and Hedgerows for Biodiversity: Habitat is needed to protect pollinators, other beneficial organisms, and healthy ecosystems.  You can also visit the BEE Protective Habitat Guide and Do-It-Yourself Biodiversity.
All unattributed positions and opinions in this piece are those of Beyond Pesticides.









(Beyond Pesticides, January 14, 2019)Â Â
(Beyond Pesticides, January 14, 2019)Â Tell Congress to stop the Trump administration from opening the floodgates to permit widespread use of antibiotics in citrus production (grapefruits, oranges and tangerines).
(Beyond Pesticides, January 11, 2019) Plans to weaken farmworker protections from toxic pesticides were dropped by Acting U.S. Environmental Protection Agency (EPA) Administrator Andrew Wheeler, according to an undated letter sent to Senator Tom Carper (D-DE) late last year. Reports indicate the action was part of a deal cut by both parties that permitted confirmation of
(Beyond Pesticides, January 9, 2019) It is news to approximately no one that pollinators are in trouble worldwide. A series of papers by biologists at the University of Guelph, Ontario, posits that pesticide regulations aimed at protection of honey bees fall far short of the critical task of protecting the multitude of bee species that are important pollinators of human food crops. These recent papers arose from 2017 workshops that involved 40 bee researchers from various universities, and representatives from Canadian, U.S., and European regulatory agencies, and from the agrochemical industry.
(Beyond Pesticides, January 8, 2019) At the end of December, the U.S. Department of Agriculture (USDA) finalized

(Beyond Pesticides, January 7, 2019)Â As the dust settles on the final Farm Bill, which passed the U.S. Senate and House of Representatives last month, it is clear that neither the substance nor the process on a range of issues meet the urgent need to address key sustainability issues that put the future in peril.
(Beyond Pesticides, January 4, 2019)Â First, the good news: plaintiffs in a
(Beyond Pesticides, January 3, 2019) Bee-toxic pesticides
(Beyond Pesticides, January 2, 2019) The “indoor microbiome†of yoga studios and other athletic facilities often contain significant levels of antibacterial chemicals like
(Beyond Pesticides, December 21-31, 2018)  As we look ahead to the new year, we wish you good health, extend our appreciation for your being a part of the Beyond Pesticides network, and ask you to consider a contribution to Beyond Pesticides. Your support is critical to our program and deeply appreciated.
(Beyond Pesticides, December 21, 2019)
(Beyond Pesticides, December 20, 2018) Using low doses of the herbicide paraquat and common proteins found in food called lectins, researchers were able to recreate the symptoms of Parkinson’s disease in rats. Results of this study,
(Beyond Pesticides, December 19, 2018)Â As the dust still settles on the final Farm Bill, which passed the U.S. Senate and House of Representatives last week, it is clear that neither the substance nor the process on a range of issues meet the urgent need to address key sustainability issues that put the future in peril.
(Beyond Pesticides, December 18, 2018) The ingredients not listed on a pesticide product are not fully reviewed for their adverse effects may be the most toxic chemicals in the formulation. Recent research, Toxicity of formulants and heavy metals in glyphosate-based herbicides and other pesticides (Toxicology Reports 5, 2018), by Defarge, de Vendômois, and Séralini demonstrates the need to disclose and test all ingredients in pesticide products, as well as the full formulation that includes “inert†or nondisclosed ingredients. While glyphosate/Roundup is obviously not allowed to be used in organic production, this research reaffirms the need to evaluate full formulations of substances allowed for use in organic.
(Beyond Pesticides, December 17, 2018)Â Cardiovascular disease is a major cause of poor health and mortality across the world. Much is known about congenital and behavioral contributors to the disease, yet to date, little research has focused on potential environmental factors, including the possible contribution to cardiovascular disease (CVD) of exposures to toxic chemicals in the workplace.
(Beyond Pesticides, December 14, 2018) The richness, diversity, and abundance of wild bumblebees in Vermont has plummeted over the last century, according to an
(Beyond Pesticides, December 13, 2018)Â The U.S. is pushing back against international standards that restrict pesticides by appealing to the World Trade Organization (WTO) to intervene. At issue are new EU maximum residue levels (MRLs) on food for the following pesticides: buprofezin, diflubenzuron, ethoxysulfurom, ioxynil, molinate, picoxystrobin and tepraloxydim.
(Beyond Pesticides, December 12, 2018)Â Costa Rica is currently experiencing exponential growth in its banana and pineapple farming industries and with it an increase in intensive pesticide applications. Recent
(Beyond Pesticides, December 11, 2018) Meltwater and runoff from Alaskan glaciers contain detectable levels of organochlorine pesticides that bioconcentrate in fish and put individuals at risk, according to a new study from researchers at theÂ
(Beyond Pesticides, December 10, 2018) The Senate Agriculture Committee has cleared the way for the whole U.S. Senate to vote on the confirmation of Scott Hutchins, PhD, recently retired from research and management at what is now the agricultural division of DowDuPont, as chief scientist at the U.S. Department of Agriculture (USDA). If confirmed, he will become the third member of Dow’s pesticide and seed division to hold a high-level position in the Trump administration’s USDA.Â
(Beyond Pesticides, December 7, 2018) As medicinal and recreational marijuana continue to be legalized in various states, 
