(Beyond Pesticides, June 4, 2021) The release of the most recent U.S. Geological Services (USGS) study of pesticide contamination of rivers on the U.S. mainland finds that degradation of those rivers from pesticide pollution continues unabated. USGS scientists looked at data from 2013 to 2017 (inclusive) from rivers across the country and offered these top-level conclusions: “(1) pesticides persist in environments beyond the site of application and expected period of use, and (2) the potential toxicity of pesticides to aquatic life is pervasive in surface waters.” Beyond Pesticides maintains that ultimately, water quality and aquatic organisms and their ecosystems will be fully protected from pesticides through a wholesale movement to organic land management practices. USGS undertakes periodic assessments of the presence and toxicity of pesticides in the country’s surface waters under the agency’s National Water-Quality Assessment Program. Recent news from these studies has not been good. In September 2020, Beyond Pesticides reported on another, related USGS survey, which found that nearly 90% of U.S. rivers and streams are contaminated with mixtures of at least five or more different pesticides. A March 2021 Beyond Pesticides Daily News article noted that USGS research demonstrated that, of 422 water samples taken from streams across […]

(Beyond Pesticides, May 14, 2021) In a prime example of cart-before-the-horse, greenwashing, or perhaps “beewashing,” a British company has badly missed the mark in its latest attempt to market a product while “doing good” and generating goodwill with customers. As The Guardian reports, Marks & Spencer, the giant United Kingdom (UK) retailer, is releasing 30 million managed honey bees into rural British landscapes in what the company is promoting as an effort to support biodiversity and the beekeeping sector. However, according to experts and environmental advocates, unleashing that many honey bees may well actually harm both wild native bees and honey bees themselves. Critics of the move say this means that wild bees will likely face fiercer competition for already inadequate food sources. Beyond Pesticides adds that these honey bees have been dispatched to the same pesticide-contaminated habitats in which existing bee populations of all kinds face harmful exposures — exacerbating issues surrounding pollinator decline rather than solving them. Marks & Spencer’s Twitter marketing promotes the project in this way: “Did you know that bees contribute to a third of the food we eat? At M&S, we’re introducing more than 30 million bees to our Select Farms to help protect the […]

(Beyond Pesticides, April 29, 2021) Glyphosate-based herbicides (GBHs) are incompatible with sustainable agriculture goals, according to a recent scientific literature analysis by scientists at Tufts University, Massachusetts. Glyphosate is the most commonly used pesticide active ingredient worldwide, appearing in many herbicide formulas, including Bayer’s (formerly Monsanto) RoundupTM. The use of this chemical has been increasing since the inception of crops genetically modified to tolerate glyphosate. However, studies demonstrate glyphosate is the main contributor to human, biotic, and ecosystem harms as toxicities from herbicides are now double what it was in 2004.  The National Academy of Sciences identifies four goals of sustainable agriculture—productivity, economics, environment, and social well-being for future generations. However, pesticides like glyphosate are ubiquitous in the environment, putting the health, economy, and food/resources for future generations at risk. Therefore, research like this is vital for understanding how chemical use can undermine sustainable agriculture goals to protect humans, animals, and environmental health. Researchers note, “[W]hether or not GBHs are viewed as essential or unessential to contemporary agriculture, and notwithstanding their role in non-tillage agriculture, this study shows that glyphosate-based herbicides do not reach the bar of agricultural sustainability, with respect to humans and the environment, making the system they are part of unsustainable.” Researchers thoroughly examined […]

It all started with New York City public school teacher Paula Rogovin and her kindergarten class. They went down to city call, wrote letters, shared artwork, and got the attention of Council Member Ben Kallos, who sponsored reform legislation. (Beyond Pesticides, April 23, 2021) Yesterday, on Earth Day, the New York City Council passed landmark legislation to eliminate the use of toxic pesticides in parks and playgrounds. This new law eliminates the use of toxic pesticides, like glyphosate/Roundup, codifying a ban on pesticides with an allowance for only those permitted under federal organic standards. A few hours before passage of the bill, Intro. 1524 (see detailed factsheet below), the measure’s sponsor, Council Member Ben Kallos, and the Speaker of the Council, Corey Johnson,  were joined at a press conference by: Bertha Lewis, president of the Black Institute; those who began the movement for the legislation, retired teacher Paula Rogovin and some of her fomer students from Public School (PS) 290 in Manhattan; Jay Feldman, executive director of Beyond Pesticides; and, Patti and Doug  Wood, executive director and program director, respectively, of Grassroots Environmental Education. “Parks should be for playing not pesticides,” said Council Member Ben Kallos. “All families should be […]

(Beyond Pesticides, April 20, 2021) Roundup products manufactured by Bayer-Monsanto kill exposed bumblebees at high rates, according to a new study published in the Journal of Applied Ecology, which points to undisclosed inert ingredients (those that typically make up a majority of the product formulation) as the primary culprit. Roundup products have become synonymous with their main active ingredient glyphosate, but Bayer-Monsanto has been quietly reformulating its flagship product with different herbicides in a likely attempt to rebrand as glyphosate cancer lawsuits drag down the company’s performance. The new study reveals that these new Roundup products present the same hazards to pollinators as glyphosate-based formulations, raising important questions about the pesticide regulatory process. Researchers based at Royal Holloway University of London, UK conducted the present study to better understand the hazards posed by herbicides often characterized as “bee safe” to the public. To do so, 10 healthy bumblebee (Bombus spp) colonies were retained, split into small groups, and sprayed with a particular herbicide. Four different herbicide products were employed, including: i) Fast Action Roundup® Ready‐To‐Use (containing glyphosate); ii) Roundup® Speed Ultra (containing acetic acid and no glyphosate); iii) Weedol® Gun! Rootkill Plus (containing glyphosate) and; iv) Roundup® ProActive (contains glyphosate […]

(Beyond Pesticides, April 19, 2021) In celebration of Earth Day and its fourth annual Ladybug Love campaign throughout the month of April, Natural Grocers is supporting Beyond Pesticides. The campaign celebrates insects that play a crucial role in food supply stability, and regenerative farming practices that use ladybugs and other beneficial insects instead of harmful synthetic pesticides to control pests. Natural Grocers will donate $1 to Beyond Pesticides for each person who pledges (including renewals) “not use chemicals that harm ladybugs and other beneficial insects on their lawn or garden, and to support 100% organic produce.”  >>1. Sign the Ladybug Pledge and support Beyond Pesticides.  You do not have to be a Natural Grocers shopper to sign this nationwide pledge. For shoppers at any of Natural Grocers’ 161 stores—all in 20 states west of the Mississippi—you can donate to Beyond Pesticides at checkout. Thank you! Ladybug Love also features in-store promotions. >>2. Advertise your commitment with a Beyond Pesticides “Pesticide Free Zone” sign. Natural Grocers’ fundraising efforts have supported Beyond Pesticides and local leaders in converting the following parks and recreational areas to convert exclusively to organic practices and to eliminate the use of synthetic pesticides and fertilizers: Roosevelt Park in […]

(Beyond Pesticides, April 13, 2021) A new study is making it increasingly clear that current laws are not protecting wild, ground nesting bees from the hazards of neonicotinoid insecticides. According to research conducted under a grant from the U.S. Department of Agriculture’s Sustainable Agriculture Research and Education (SARE) projects, Blue Orchard Mason Bees (Osima spp) are at particular risk from pesticide-contaminated soil they use to create their nest. Authors of the study note that with honey bees already in decline, pollination services provided wild managed bees like Mason bees are growing in importance. “Wild bees such as Osmia are becoming increasingly popular as managed pollinators in many systems, as there is growing concern that honeybees may not be able to continue to meet the increasing demands of agricultural pollination if these trends continue,” the study reads. The study looked at three overarching threats to mason bee populations, aiming to identify risks from pesticide contaminated soil used as a nest, effects on larvae exposed to contaminated soil, and whether female mason bees could determine the difference between contaminated and uncontaminated soil. “Imidacloprid is a neonicotinoid, which is a group of pesticides that are highly toxic to bees,” said Christine Fortuin, PhD, […]

(Beyond Pesticides, April 8, 2021) Pesticide use threatens aquatic and terrestrial invertebrates and plants more than ever, despite declining chemical use and implementation of genetically engineered (GE) crops in the U.S., according to a University Koblenz-Landau, Germany study. Since the publication of Rachel Carson’s Silent Spring (1962), many environmental agencies have banned the use of pesticides like organochlorines, organophosphates, and carbamates for their devastating toxic—sometimes lethal—effects, particularly on vertebrates, including humans. However, this ban created a pathway for a new generation of pesticides (e.g., neonicotinoids, pyrethroids) to take hold. Although these pesticides are more target-specific, requiring lower chemical concentrations for effectiveness, they have over double the toxic effects on invertebrates, like pollinators.  Invertebrates and plants are vital for ecosystem function, offering various services, from decomposition to supporting the food web. Furthermore, invertebrates and plants can act as indicator species (bioindicators) that scientists can observe for the presence and impact of environmental changes and stressors. Therefore, reductions in invertebrate and plant life have implications for ecosystem health that can put human well-being at risk. Study lead author Ralf Schulz, PH.D., notes, “[This study] challenge[s] the claims of decreasing environmental impact of chemical pesticides in both conventional and GM [genetically modified or genetically engineered (GE)] crops and […]

(Beyond Pesticides, March 29, 2021) New data on the hazards of neonicotinoid insecticides calls for urgent regulatory action. The same pesticides that are linked to the worldwide decline of insect pollinators also present significant risks to their avian counterparts, hummingbirds. Widely known for their nectar-fueled hovering flight powered by wings beating up to 80 times per second, hummingbirds display unique reactions to toxic pesticides. Research by scientists at the University of Toronto finds that hummingbirds exposed to systemic neonicotinoid insecticides for even a short period of time can disrupt the high-powered metabolism of this important and charismatic animal. Tell EPA and Congress to save the hummingbirds by suspending use of neonicotinoid insecticides and supporting the transition to organic practices. While hovering, a hummingbird consumes calories faster than any other bird or mammal. That’s why the finding that exposure to the neonicotinoid insecticide imidacloprid slows metabolism up to 25% is so disturbing. Systemic pesticides like imidacloprid and other neonics are transported throughout the plant, including nectar. Findings on the danger neonicotinoids pose to hummingbirds decades after the chemicals were first permitted to be used in the environment, and by independent scientists, not regulatory agencies, is indicative of a regulatory approach that fails […]

(Beyond Pesticides, March 24, 2021) The worst predictions of scientists and advocates are playing out in the fields of eastern Kenya, as chemical-intensive farming there threatens the future of food production. According to Radio France Internationale (RFI), Kenyan farmers have resorted to pollinating their crops by hand after pesticide use killed off most of the pollinators they rely on. “We are mostly affected by pesticides because they have killed most pollinators which pollinate our crops—this has affected our food production compared to previous years,” said Joseph Mbithi, a farmer in Mbakoni village, Makueni County, Kenya to RFI. Crop yields in the region have tapered off over the last two years, and farmers like Mr. Mbithi are pointing to pesticide use as the cause, citing past reliance on the herbicide Roundup (glyphosate) and the organophosphate insecticide malathion. “Pollinators such as bees and butterflies are not around due to chemicals which we spray in our farms,” he told RFI.   As a result, farmers are using toothbrushes and sponges as a substitute for the buzzing work of local pollinators. And it’s more complicated than one may think. ‘’The flowers are different in shape and are different in sizes. The male one is […]

(Beyond Pesticides, March 19, 2021) As reported by VTDigger, Vermont’s Endangered Species Committee recently took action to uphold the state’s endangered species law. The committee announced that a mosquito control program in the Champlain Valley, which uses the toxic pesticides malathion and permethrin, is threatening five species of endangered bats — all of which are on Vermont’s list of threatened and endangered species. The committee voted unanimously to recommend to the state Secretary of the Agency of Natural Resources that the spraying program in the Brandon, Leicester, Salisbury, Goshen, Pittsford Insect Control District be allowed only via special permit. Learn about safer mosquito management and insect-borne diseases at Beyond Pesticides website pages. The bats inhabit the Insect Control District’s five towns, which are host to important feeding habitat for these creatures, as well as maternal roosting colonies where baby bats are born and raised during the months when the pesticides are typically sprayed. In addition, the nighttime spraying of these compounds along 190 miles of road in these communities hangs in the air for hours, putting nocturnally active bats — who fly through the toxic mist or consume insects contaminated with the chemicals — at risk. Mason Overstreet of Vermont […]

(Beyond Pesticides, March 2, 2021) Populations of solitary ground nesting bees decline after exposure to neonicotinoid insecticides, according to a study published in Scientific Reports late last month. In addition to ground-nesting bees, neonicotinoids have been shown to harm butterflies, hummingbirds, songbirds, aquatic species and mammals, including humans. As independent science continues to look beyond the effects of these systemic chemicals on honey and bumblebees, advocates maintain that it has become increasingly clear that the high hazards presented by neonicotinoids necessitate their complete elimination. “Farmers need to protect their crops from pests, but they also absolutely need to protect pollinators from the unintended effects of pesticides,” said study coauthor Susan Willis Chan, PhD. “The data on this particular [neonicotinoid] product are so clear that there’s really no question about what has to happen. We have to find something else.” Researchers focused their effort investigating how various systemic pesticides effect the hoary squash bee (Eucera pruinosa), a ground nesting bee found throughout North America that feeds entirely on pollen from cucurbits (including squash, cucumber, pumpkin, gourds, etc). The hoary squash bee provides essential pollinator services for these crops throughout the U.S. and Canada. Neonicotinoids and other systemic insecticides are often applied […]

(Beyond Pesticides, February 23, 2021) The same pesticides implicated in the worldwide decline of insect pollinators also present significant risks to their avian counterparts, hummingbirds. Well known for their nectar-fueled hovering flight powered by wings beating over 50 times per second, hummingbirds display unique reactions to toxic pesticides. Research by scientists at the University of Toronto finds that hummingbirds exposed to systemic neonicotinoid insecticides for even a short period of time can disrupt the high-powered metabolism of this important and charismatic animal. Scientists began their experiment by trapping 23 wild ruby-throated hummingbirds and housing them in an animal care facility. One group of birds acted as a control and received no pesticide exposure, while the rest were assigned either low, middle, or high exposure (1 part per million [ppm], 2ppm, and 2.5ppm, respectively) to the neonicotinoid imidacloprid. Scientists determined these amounts based upon probable nectar contamination in the real world. The pesticide was incorporated into the sugar solution provided to the birds over the course of three days. Within two hours of exposure to the pesticides, hummingbird metabolism dropped significantly. While the control group increased energy expenditure between 1% to 7%, the low exposed group displayed a 6% average decline, […]

(Beyond Pesticides, February 22, 2021) Congressional Rep. Joe Neguse, Rep. Alan Lowenthal and Chair of the Natural Resources Subcommittee on Water, Oceans and Wildlife Rep. Jared Huffman have reintroduced their resolution (H.Res. 69: Expressing the need for the Federal Government to establish a national biodiversity strategy for protecting biodiversity for current and future) to create a national biodiversity strategy. Everywhere we turn, we see signs of ecological collapse—wildfires, the insect apocalypse, crashing populations of marine organisms, more and more species at risk, rising global temperatures, unusual weather patterns, horrific storms, and pandemics. Never was a holistic strategy on biodiversity more urgent. Tell your U.S. Representative to cosponsor Rep. Neguse’s National Biodiversity Strategy Resolution, H.Res. 69. The resolution calls for a natio. 69.nal commitment to addressing the biodiversity crisis by establishing a strategy to be developed through an interagency process announced by the president in an Executive Order. The strategy process will encourage agencies to identify and pursue a full range of actions within existing laws and policies and encourage consideration of new ones. It would also promote accountability and progress in addressing the biodiversity crisis through a new quadrennial assessment. “The decline of biodiversity presents a direct threat to the security, […]

(Santa Fe, New Mexico, February 11, 2021)—New Mexico State Senator Brenda McKenna  introduced the Public Schools Pesticide Management Act (PSPMA) (SB 326) in order to protect school children from exposure to toxic pesticides where they learn and play. The legislation advances ecological pest management, an environmentally healthy way to protect children and the public from weeds and pests, within all schools, classrooms, community parks, and playgrounds in the state. Under PSPMA, only organic and minimum risk pesticides, the least toxic, yet still-effective products on the market will be allowed. Toxic pesticide use will be permitted only under a defined public health emergency, as determined by a public health official. The law does not address the use of pesticides in farming or agriculture.  “All children in New Mexico have the right to a safe environment where they learn and play,” said State Senator Brenda McKenna. “This legislation embraces an environmentally healthy approach to pest management, so families do not have to worry about the use of toxic pesticides in schools and communities.” Pesticide exposure presents unique dangers to children’s health. Children’s developing organ systems are less able to detoxify harmful chemicals, and they often come into closer contact with pesticides than adults in […]

(Beyond Pesticides, February 9, 2021) Multinational agrichemical corporation Bayer/Monsanto released a proposal last week to provide up to $200,000 per claimant in compensation to future victims of its Roundup weed killer, according to Reuters. The proposed settlement, agreed to with lawyers representing victims, continues Bayer/Monsanto’s attempts to limit the spiraling cost Roundup lawsuits, which have awarded individual victims millions of dollars in damages. The company appears to consider the proposal a good investment, as it has announced no plans to stop sale and production of its carcinogenic weed killer. However, under the current proposal, plaintiffs would not be forced to go through a compensation fund, and could seek additional punitive damages through a separate suit. As the attorney for Roundup victims, Elizabeth Casbraser, of Lieff Cabraser Heimann & Bernstein, told the Wall Street Journal, “It’s really about options, and it’s really about choice. I think it’s a great option that offers predictability and transparency for people who don’t want to wait, who want to be compensated.” To stop the surge of cancer victims – comprising roughly 125,000 lawsuits – from further damaging the company financially, Bayer/Monsanto last year proposed a $10.9 billion settlement with current litigants. Unresolved future claims were […]

(Beyond Pesticides, February 8, 2021) Immediately following his inauguration, President Biden issued an Executive Order (EO) directing the heads of all executive departments and agencies to produce recommendations for improving and modernizing regulatory review, with a goal of promoting public health and safety, economic growth, social welfare, racial justice, environmental stewardship, human dignity, equity, and the interests of future generations. This Executive Order, if effective, will  reverse the historical trend of status-quo regulatory reviews required by the White House Office of Management and Budget (OMB) that typically support vested economic interests of polluters (e.g., petroleum-based pesticide and fertilizer manufacturers). Instead, the President’s EO, Modernizing Regulatory Review, sets the stage for the adoption of agency policy across government to seriously and with urgency confront the climate crisis, biodiversity collapse, and disproportionate harm to people of color communities (environmental racism). Key agencies that can have a systemic effect in meeting these existential challenges are the Environmental Protection Agency (EPA), Department of Interior (DOI), Department of Agriculture (USDA), and Department of Labor/Occupational Safety and Health Administration (DOL/OSHA). But the EO will remain words on a page unless we all across the country exercise our voice and advocate for the changes necessary to end […]

(Beyond Pesticides, January 27, 2021) Lowest ever recorded! That’s the result of a yearly winter monarch count along the California coast, overseen each year by the conservation group Xerces Society. In 2020, citizen scientists counted only 2,000 butterflies. The findings indicate that many on the planet today are likely to experience, within their lifetimes, a world where western monarchs are extinct—unless the federal government acts now. Western monarchs migrate from the Pacific Northwest to overwintering grounds along the California coast, where they remain in relatively stationary clusters that are easy to count.  In the 1980s, roughly 10 million monarchs overwintered along the coast. By the 1990s, that number fell into the low single digits, roughly 1.2 million. Five years ago counts were at roughly 300,000. By 2019, numbers crashed below 30,000. This year’s count saw no monarchs at iconic overwintering sites like Pacific Grove. Other locations, like Pismo State Beach Monarch Butterfly Grove and National Bridges State Park saw only a few hundred. “These sites normally host thousands of butterflies, and their absence this year was heartbreaking for volunteers and visitors flocking to these locales hoping to catch a glimpse of the awe-inspiring clusters of monarch butterflies,” said Sarina Jepsen, […]

(Beyond Pesticides, December 22, 2020) Opening arguments and evidence were filed by a coalition of farmworkers, farmers, and conservationists last week in litigation challenging the U.S. Environmental Protection Agency’s (EPA) re-approval of glyphosate, best known as the active ingredient in Monsanto’s “Roundup” pesticides. The lawsuit charges that the Trump Administration unlawfully ignored cancer risks and ecological damage of glyphosate.  Represented by the Center for Food Safety (CFS), plaintiffs, including the Rural Coalition, Farmworker Association of Florida, Organización en California de Lideres Campesinas, and Beyond Pesticides, filed the federal lawsuit in the Ninth Circuit Court of Appeals in March. The groups seek to have the pesticide prohibited from use or sale because of its unlawful approval. “Farmworkers are on the frontlines of nearly every health and environmental crisis, from the COVID-19 pandemic to climate change, and are particularly at risk of health impacts from pesticide spraying,” said Amy van Saun, senior attorney at CFS. “EPA failed these essential workers. It rejected evidence that glyphosate causes cancer and entirely failed to assess the main way people are exposed at work, through their skin.” The court filing includes volumes of evidence showing how EPA ignored glyphosate’s health risks, including cancer risks, to farmworkers and farmers exposed during spraying. The evidence […]

(Beyond Pesticides, December 4, 2020) The Philadelphia City Council, yesterday afternoon, passed Bill #200425, known as Healthy Outdoor Public Spaces (HOPS), a sweeping ban of herbicides (weed killers) on its public property that stops short of banning all toxic pesticides, while encouraging the adoption of organic land management. With wide support for broad pesticide restrictions from public health and labor groups, scientists, and land managers, the bill was adopted by a unanimous vote. The effort was spearheaded by Toxic Free Philly, a group of local residents deeply concerned about the impacts of pesticides on health and the environment. While the hearing record and the bill’s language indicates a clear spirit and intent to move Philadelphia’s public spaces to organic practices, advocates cite the importance of public involvement and oversight to ensure their goals are achieved. Beyond Pesticides testified for broad language based on the model it is advancing nationwide, and offered the city council free horticultural services to implement an organic program under the new policy. “Toxic chemicals, including pesticides and synthetic fertilizers, are not needed to manage landscapes and increasingly local governments are recognizing that neither EPA nor state agencies, and their underlying statutes, provide adequate protection for their […]

(Beyond Pesticides, November 11, 2020) Neonicotinoid insecticides inhibit honey bee sleep cycles, leading to stress and population declines, according to research from Vanderbilt University, published in Scientific Reports. Although there is already ample evidence of the dangers these systemic insecticides pose to pollinators – as evidenced by recent bans in the European Union and Canada – this new line of investigation add further detail to the ongoing crisis in the pollinator world. “I was thinking about honey bee disappearances and it clicked—if pesticides are killing bees indirectly but we don’t know exactly how, maybe it’s because they’re getting physically lost,” said study coauthor Michael Tackenberg, PhD.  Scientists conducted the experiment using honey bees located on Vanderbilt’s campus, which does not use neonicotinoid insecticides. After returning from pollen collection, forager bees were captured at their hive entrance and moved into monitoring tubes, which were subsequently transferred to the lab. In the lab, scientists were able to control light and dark cycles, and exposed bees to levels neonicotinoids they would likely experience if foraging on contaminated flowers. Foraging bees were first exposed to light/dark at 12/12 cycles, followed by four days of complete darkness, at which time some bees were provided neonics, […]

(Beyond Pesticides, October 29, 2020) Natural areas around farmlands play an important role in managing pest outbreaks and therefore reducing insecticide use, a new study published in the journal Ecology Letters finds. While industrial agriculture puts pressure on farmers to grow single crops on ever larger farms to achieve economies of scale, these monoculture landscapes have significant downsides for public health and the environment. “Overall, our results suggest that simplified landscapes increase vineyard pest outbreaks and escalate insecticide spray frequencies,” said lead author Daniel Paredes, PhD, to the Daily Democrat. “In contrast, vineyards surrounded by more productive habitats and more shrubland area are less likely to apply insecticides.” To investigate the effect of nearby landscapes on farm pest pressure, the team of University of California, Davis scientists used a database created by the government of Spain. For 13 years, the government monitored 400 Spanish vineyards for the presence of the European Grapevine Moth. The moth is a notorious vineyard pest (discovered in California vineyards in 2009), laying three generations of eggs on grapes. In the first generation, the moth larvae will web and feed on flowers. In the second and third, they feed on berries, damaging harvests. Scientists developed a […]

(Beyond Pesticides, October 20, 2020) The additive stress of pesticide exposure and food scarcity leads to significant declines in wild pollinator populations, according to research published by scientists at University of California, Davis. Although it is well known that insect and pollinators populations are at risk from multiple stressors related to industrial agriculture, comprehensive evaluations are a challenging scientific undertaking. “Just like humans, bees don’t face one single stress or threat,” said lead author Clara Stuligross, a PhD. candidate in ecology at UC Davis. “Understanding how multiple stressors interplay is really important, especially for bee populations in agricultural systems, where wild bees are commonly exposed to pesticides and food can be scarce.” To better understand the interplay between these two stressors, researchers designed a field study. Mason bee pollinators were provided cages to nest in, and each stressor was separated out. One set of bees were provided high levels of food availability, while another received scant floral resources. Certain cages within each food level were treated with the product Admire Pro, a Bayer Cropscience insecticide containing the neonicotinoid imidacloprid. Scientists found significant impacts on the factors that deal with mason bees’ reproductive success. This includes the likelihood that a female […]