Archive for the 'Biodiversity' Category
23
Sep
(Beyond Pesticides, September 23, 2019)  Your voice is making a difference! Last month, thousands of individuals took action through Beyond Pesticides and other environmental groups to express concern to their federal lawmakers about the Trump Administration’s assault on the Endangered Species Act (ESA). In response, U.S. Representatives Grijalva, Beyer, and Dingell in the House, and Senator Udall in the Senate have introduced the PAW and FIN Conservation Act of 2019. This law will roll back Interior Department regulations that would weaken this landmark law protecting species from extinction. Tell your member of Congress to co-sponsor the PAW and FIN Conservation Act of 2019! The PAW and FIN Act reverses rules which will: (i) weaken the consultation process designed to prevent harm to endangered animals and their habitats from federal agency activities; (ii) curtail the designation of critical habitat and weakens the listing process for imperiled species; and (iii) eliminate all protections for wildlife newly designated as “threatened” under the Act. Biodiversity is under threat in the US and throughout the world. Pollinator declines are well known, and now scientists are indicating we are in the midst of an insect apocalypse.  Declines at the bottom of the food chain are even more concerning given […]
Posted in Biodiversity, Take Action, Uncategorized, Wildlife/Endangered Sp. | 3 Comments »
18
Sep
(Beyond Pesticides, September 18, 2019) A new report published by Friends of the Earth (FOE), “Pesticides and Soil Health” highlights healthy soil as a key pillar of regenerative, organic agriculture. There are numerous methods that regenerative agriculture utilizes to maximize soil health such as cover cropping, crop rotation, and compost applications. FOE focuses in on an often-overlooked aspect to soil health, “that eliminating or greatly reducing toxic pesticides is key to building healthy soils and ecosystems for a healthy planet.” Beyond Pesticides has long believed that toxic pesticide use has no place in organic and regenerative land management practices and that they can and should be eliminated. According to Jay Feldman, executive director of Beyond Pesticides and former member of the National Organic Standards Board (NOSB) said, “Pesticide reduction strategies that allow continued use of toxic substances undermine the soil biology and biodiversity that is critical to healthy plants and unnecessary to achieving pest management goals.” “It’s past time to talk elimination of toxic pesticides and nothing short of that.” Toxic pesticides have a diverse range of unintended impacts, including  cancer and other diseases to those exposed via usage or drift, and crop loss. Lesser known is the impact that pesticides […]
Posted in Agriculture, Alternatives/Organics, Biodiversity, Microbiata, Uncategorized | No Comments »
12
Sep
(Beyond Pesticides, September 12, 2019) This September, adults will join in a global climate strike spurred by the Fridays for Future school climate strike movement. Environmentalists around the world are galvanizing the public to participate in youth-led disruption in order to bring attention to the climate crisis. U.S. strike demands include a Green New Deal, respect for indigenous land and sovereignty, environmental justice, protecting biodiversity, and sustainable agriculture. The strike will kick off on Friday, September 20 and actions will continue until the next Friday, September 27. Fridays for Future started when then 15-year-old Greta Thunberg began striking in 2018 in front of the Riksdag – the Swedish parliament. She was inspired by U.S. teens who refused to go back to school and instead organized a massive national protest for gun control after the Parkland, Florida shooting. Ms. Thunberg gained publicity and captured a global audience with her clear voice and piercing castigation of adults in power who, “are sh–ting on my future.” Ms. Thunberg has, among other diagnoses, Asperger Syndrome. She attributes her ability to articulate the climate crisis to her capacity to think differently and see things in “black and white.” In an interview with TIME Magazine, she stated, “The climate crisis […]
Posted in Biodiversity, Climate Change, Environmental Justice, Integrated and Organic Pest Management, Take Action, Uncategorized | No Comments »
15
Aug
(Beyond Pesticides, August 15, 2019) An article in the journal Plos One, “An assessment of acute insecticide toxicity loading (AITL) of chemical pesticides used on agricultural land in the United States,” shows that recent shifts in insecticide use—from organophosphates and carbamates to synthetic pyrethroids and neonicotinoids—have made a large contribution to the ongoing insect apocalypse. This shift to insecticides that target insects based on both selective toxicity and delivery method occurs within a context of shrinking habitat and biodiversity. The study, by Michael DiBartolomeis, PhD, Susan Kegley, PhD, Pierre Mineau, PhD, Rosemarie Radford, and Kendra Klein, PhD, presents a measure of acute insecticide toxicity loading that incorporates acute toxicity, quantity used, and the rate at which the insecticide degrades. Goulson et al. applied a similar measure in Great Britain that did not incorporate the rate of degradation. Both studies use the median lethal dose (LD50) to honey bees as a measure of acute toxicity and calculate the potential number of bee deaths based on the number of lethal doses of various insecticides applied in the field. In both cases, researchers used toxicity estimates for honey bees because they are widely available. Other insects may be more or less sensitive. The […]
Posted in Agriculture, Biodiversity, Environmental Protection Agency (EPA), neonicotinoids, organophosphate, Pollinators, Synthetic Pyrethroid, Uncategorized | No Comments »
06
Jun
(Beyond Pesticides, June 6, 2019) Pesticide use eliminates pest predators and permits mosquito populations to flourish, according to research conducted in Costa Rica by scientists at Utah State University. The new study, “Adaptation to agricultural pesticides may allow mosquitoes to avoid predators and colonize novel ecosystems,” highlights the dangers of human intervention through broad scale pesticide applications, and the urgent need to consider ecosystem-wide impacts before allowing chemicals to be placed on the market. As lead study author Edd Hammill, PhD, told National Geographic, the investigation got its start after he observed higher numbers of mosquitoes in orange groves he was visiting, when compared to other, non-agricultural areas. “We felt like we were getting a lot more mosquito bites in plantations than in pristine areas and started to wonder why,” noted Dr. Hammill. The study focuses first on the role that bromeliads, a tropical flowering plant that grows on tree branches, play in affecting mosquito populations. Mosquitoes use the water that these plants catch in between their leaves to lay eggs. Many other species are found to lay eggs within the leaves, including the top-level predator in this system, the damselfly. Dr. Hammill’s team looked at community composition within bromeliad […]
Posted in Agriculture, Biodiversity, Environmental Protection Agency (EPA), International, Mosquitoes, Uncategorized | No Comments »
03
Jun
(Beyond Pesticides, June 3, 2019) As the signs of environmental crises tied to pesticide use escalate and the need for action becomes more urgent, elected officials at the state level must step up to meet the challenges to protect biodiversity and ecosystems essential to life. Waiting on Congress to act allows precious time to pass without critically needed action. The White House fails to acknowledge scientific findings about adverse effects that threaten the sustainability of the environment and human survival. In the last several months, key pieces of science call for dramatic action to eliminate toxic pesticide use and put organic and sustainable practices in place. Ask Your Governor to Issue an Executive Order to Protect the Ecosystems and Biodiversity of Your State. *A 1,500-page assessment from the United Nations Decade on Biodiversity project — the IPBES [Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services] Global Assessment Summary for Policymakers is the most comprehensive look to date at the biodiversity crisis and its implications for human civilization. The findings, approved by an intergovernmental body of 132 member states, including the U.S., provide a devastating assessment of the state of biodiversity and of ecosystem services, which support the delicate balance of nature. *The “crash” of […]
Posted in Biodiversity, Uncategorized | 1 Comment »
29
May
(Beyond Pesticides, May 29, 2019) A soil health monitoring study in England finds that an alarming 42% of surveyed fields are deficient in a wriggly measurement—earthworm populations. Over half the farmers recruited in this citizen science evaluation said they planned to change their soil management practices as a result of the earthworm monitoring results. The #60minworms method, named for the time it takes to conduct, is to dig a soil pit and place the soil onto a mat, then sort out the earthworms into a bucket. After sorting, the total number of earthworms is counted, and juveniles are returned to the soil. Adults are sorted and recorded by type using a simple key (surface worms: epigeic—small and red, anecic—pale or green; deep-burrowing worms: endogeic—heavily pigmented and large). This is repeated ten times using a W-style sampling pattern across a field. Jacqueline Stroud, PhD, the study author and soil scientist, developed survey booklets to distribute to volunteer farmers. Recruitment methods included events, workshops, and Twitter. Farmers conducted tests on their own private land during a 6-week window in 2018. They recorded their results in the given booklets and sent the information for analysis. A total of 126 fields were surveyed. Worm data […]
Posted in Agriculture, Biodiversity, Soil microbiome, Uncategorized | No Comments »
10
May
(Beyond Pesticides, May 10, 2019) The Earth, its natural systems, and as many as a million species are at enormous risk from human activity, says a new assessment from the United Nations Decade on Biodiversity project — the IPBES Global Assessment Summary for Policymakers. The net finding might be expressed as: humans are not immune from the sequelae of biodiversity loss; the ecosystem functions on which human lives depend are in increasingly dire straits. The 1,500-page report, convened by IPBES (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services), is the most comprehensive look to date at the biodiversity crisis and its implications for human civilization. A summary of the report’s findings, approved by representatives from the U.S. and other member countries, was released in Paris on May 6; the complete report is expected later in 2019. It is of note and commendable that the summary, though lengthy, is digestible for a lay audience. IPBES is an intergovernmental body of 132 member states, established in 2012, that assesses the state of biodiversity and of the ecosystem services such diversity provides to societies. The group also provides reporting to policymakers on those assessments, and on the dynamics (i.e., causes and impacts) between human […]
Posted in Agriculture, Biodiversity, International, Uncategorized | 1 Comment »
19
Apr
(Beyond Pesticides, April 19, 2019) Flying insects exposed to neonicotinoid insecticides or its breakdown products experience visual impairment and difficulty flying, according to a study published in the journal NeuroToxicology by researchers at the University of Saskatchewan, Canada. While at face value these impacts may sound non-lethal, any loss of fitness in the wild can make flying insects an easier meal for their predators. “Our findings suggest that very low doses of the pesticide or its metabolic products can profoundly and negatively affect motion detection systems that flying insects, such as locusts, grasshoppers and bees, need for survival,” said Jack Gray, PhD, an expert in neural control of animal behavior at the University of Saskatchewan. Researchers used locusts as proxies for other flying insects, as the visual processing in their brains is easy to track in laboratory settings. Moreover, as study co-author Rachel Parkinson notes, “Bees and other flying insects use similar neural mechanisms to process visual motion,” making the implications of this study applicable to a wide range of other airborne insects. And rather than simply focus on the effects of exposure to a single active ingredient, researchers also studied whether its breakdown products (metabolites) resulted in similar impairment. […]
Posted in Biodiversity, neonicotinoids, Pollinators, Uncategorized | No Comments »
18
Apr
(Beyond Pesticides, April 18, 2019) Organic farming promotes natural resistance to common foodborne human pathogens, according to a study that evaluates the benefit of soil organisms. By protecting valuable species of dung beetles and soil bacteria, organic farming systems naturally act to clean up and decompose potentially pathogen-bearing animal feces. While these natural systems suppr ess pathogens on organic farms, coventional chemical-intensive farms are left with higher levels of fecal residues and are therefore significantly more likely to yield produce carrying such foodborne pathogens as E. coli. The authors emphasize that curbing the spread of common foodborne pathogens could save thousands of lives and prevent millions of illnesses each year. The study, “Organic farming promotes biotic resistance to foodborne human pathogens,” published in the Journal of Applied Ecology, compares dung beetle populations, soil bacteria diversity, and feces removal rates on 70 organic and conventional broccoli farm fields across the west coast of the U.S. In addition to studying field conditions, authors conducted additional microcosm studies to directly test the effects of dung beetles and soil microbes on the suppression of introduced E. coli. Results from field analyses show that organic management practices lead to greater biodiversity among dung beetles and soil […]
Posted in Agriculture, Alternatives/Organics, Beneficials, Biodiversity, Uncategorized | No Comments »
04
Mar
(Beyond Pesticides, March 4, 2019) Last week, U.S. Representative Earl Blumenauer (D-OR) reintroduced the Saving America’s Pollinators Act (H.R.1337) to cancel specific bee-toxic pesticides and establish a review and cancellation process for all pesticides that are potentially harmful to pollinators. The specific pesticides targeted in the bill include the systemic insecticides imidacloprid, clothianidin, thiamethoxam, dinotefuran, acetamiprid, sulfoxaflor, flupyradifurone, and fipronil. The bill also establishes requirements for review of other potentially bee-toxic chemicals by an independent pollinator protection board, and requires annual reports on the health and population status of pollinators. The bill creates a sustainable model for pollinator protection in the face of ongoing obstruction by an increasingly industry-influenced EPA. There are 29 cosponsors to date. The current bill is the fifth version of Saving America’s Pollinators Act (SAPA), which was first introduced by U.S. Representative Conyers (D-MI) in 2013. The newest version differs from previous bills in its bold definition of who should have responsibility for assessing harm to pollinators. SAPA 2019 calls for the establishment of a Pollinator Protection Board, to be composed of expert scientists, beekeepers, farmers, members of environmental organizations and other key stakeholders, nearly all of whom must not have any conflict of interest or affiliation […]
Posted in acetamiprid, Bayer, Biodiversity, Clothianidin, dinotefuron, Environmental Protection Agency (EPA), Fipronil, flupyradifurone, neonicotinoids, Sulfoxaflor, Take Action, Thiamethoxam, Uncategorized | 16 Comments »
14
Feb
(Beyond Pesticides, February 14, 2019) Over the course of the last two weeks in Bavaria – a southern state of Germany – locals rallied in an effort to save the bees. Braving the cold in eye-catching bee outfits, a broad coalition of activists collected over a million signatures (the necessary 10% of the state’s eligible voters) to move a petition into legislature. The petition pushes forward changes in farming practices to support pollinators; while bees are the charismatic champion of the campaign, changes will support biodiversity in general. Now that signatures are gathered, the state parliament has three months to handle citizens’ requests. Then, parliament can either accept the proposal as is or put it to a statewide referendum. In a statewide referendum, there will be a “yes” or “no” vote by a simple majority, with government bound by the result. A central motion within the petition is to increase percentage of organic farmland from 10% to 30% by 2030. This number is based on the global movement to conserve 30% of the world by 2030 in order to avoid environmental catastrophe. Proponents of the petition suggest that the demand for organic products is higher than current Bavarian capabilities, and that the […]
Posted in Agriculture, Alternatives/Organics, Biodiversity, International, Pollinators, Uncategorized | 1 Comment »
12
Feb
(Beyond Pesticides, February 11, 2019) A new systematic review of insect population studies worldwide reports on “the dreadful state of insect biodiversity in the world, as almost half of the species are rapidly declining and a third are being threatened with extinction.” The study concludes with the dire prediction that insects as a whole will go extinct in the next few decades if patterns of intensive agriculture, in particular pesticide use, continue. The review, published in Biological Conservation, analyzes 73 insect population studies conducted within the past 40 years, filtered to include only those that quantitatively assess all insect species within a taxa over a span of 10 or more years. Researchers Francisco Sánchez-Bayo, PhD and Kris A.G. Wyckhuys, PhD uncover the disturbing truth behind this mass of data: one in every three insect species monitored worldwide is threatened with extinction. Even more concerning is the finding that 41% of insect species worldwide are in decline, outpacing the more well-publicized vertebrate declines by 200%. Only a few species are expanding in range or occupying vacant niches – not nearly enough to compensate for the massive losses. In 8% of the studies in the review, citizen science data is analyzed in […]
Posted in Biodiversity, International, Pollinators, Uncategorized, Wildlife/Endangered Sp. | No Comments »
04
Feb
(Beyond Pesticides, February 4, 2019) Although the rusty patched bumblebee was placed on the endangered species list in 2017, the Trump Administration has failed to put in place legally required safeguards for the species. The U.S. Department of the Interior (DOI) must designate locations where additional protections could help restore the endangered bumblebee’s population. Tell Your U.S. Representative and U.S. Senators to Urge U.S. Department of Interior Acting Secretary David Bernhardt to protect the endangered rusty patched bumblebee as required by law. DOI’s failure to comply with requirements under the Endangered Species Act (ESA) is consistent with the Trump Administration’s continued disregard for ongoing pollinator declines and environmental protections in general. Under ESA, DOI is required to determine “critical habitat” that contains physical and biological requirements a listed species needs in order to recover. That area must be designated within one year of placing a species on the endangered list, using best available scientific data. The Trump Administration’s DOI has failed to do so under either former Director Ryan Zinke or Acting Director David Bernhardt. Without determining critical habitat, the administration is in violation of the ESA, and the survival of a critical endangered species is threatened. The rusty patched bumblebee has a […]
Posted in Biodiversity, Department of Interior, Pollinators, Take Action, Uncategorized, Wildlife/Endangered Sp. | 3 Comments »
24
Jan
(Beyond Pesticides, January 24, 2019) A UK Study has concluded that the expansion of community gardens, identified as “pollinator hotspots” with “high pollinator diversity,” offer an important opportunity for assisting ailing pollinator species and improving community quality of life, particularly in low income neighborhoods. Consequently, researchers suggest towns and cities can be planned and managed more effectively to steward existing urban biodiversity to create essential havens for pollinators and people under stress. The study finds that, “A high level of community robustness to species loss is increasingly recognized as an important goal in restoration ecology, since robust communities are better able to withstand perturbations.” As previous research has shown that organic agriculture boosts local economies, researchers account for and compare a key socioeconomic factor; household income. Affluent neighborhoods have larger, more numerous, and more consistently maintained gardens and green spaces. To increase city-scale robustness, researchers suggest increasing community garden allotments, planting perennial flowering plants in cemeteries, and improving management of public parks. However, researchers explain that increasing the number of community gardens, particularly in communities of low-income, would be the best strategy per unit area, as it would expand viable habitat for pollinators throughout cities while providing much-needed green space […]
Posted in Agriculture, Alternatives/Organics, Beneficials, Biodiversity, Climate Change, Environmental Justice, Habitat Protection, International, Lawns/Landscapes, Pollinators, Uncategorized | No Comments »
17
Jan
(Beyond Pesticides, January 17, 2019) Although the rusty patched bumblebee was placed on the endangered species list in 2017, the Trump Administration has failed to put in place legally required safeguards for the species. As a result, the Natural Resources Defense Council (NRDC) is suing the Administration’s Department of the Interior (DOI) for failing to designate locations where additional protections could help restore the endangered bumblebee’s population. Advocates say DOI’s failure to comply with requirements under the Endangered Species Act (ESA) is consistent with the Trump Administration’s continued disregard for ongoing pollinator declines and environmental protections in general. Under ESA, DOI is required to determine “critical habitat” that contains physical and biological requirements a listed species needs in order to recover. That area must be designated within one year of placing a species on the endangered list, using best available scientific data. But the Trump Administration’s DOI, under both former Director Ryan Zinke and Acting Director David Bernhardt, has failed to do so, in violation of ESA. NRDC’s legal director Rebecca Riley notes that this lack of follow-through “leaves this highly endangered bee’s habitat at risk of destruction and decreases the species’ chance for survival.” The rusty patched bumblebee has […]
Posted in Biodiversity, Fish and Wildlife Service (FWS), Pollinators, Take Action, Uncategorized, Wildlife/Endangered Sp. | No Comments »
14
Dec
(Beyond Pesticides, December 14, 2018) The richness, diversity, and abundance of wild bumblebees in Vermont has plummeted over the last century, according to an analysis from researchers at the University of Vermont and Vermont Center for Ecostudies (VCE). This research adds fresh evidence to the growing realization that mankind is witnessing and contributing to, as the New York Times recently labeled, a worldwide insect apocalypse. “We’re losing bumblebees even before we fully understand their benefits to our economy and well-being, or how they fit into ecosystems,” said Kent McFarland, study coauthor and conservation biologist at VCE in a press release. Researchers conducted surveys with the help of 53 trained citizen scientists. Alongside the researchers, these individuals surveyed bumblebee populations through a combination of photos of wild bees and net collections. In total, over 81% of the state’s municipalities were included in the survey, representing all of Vermont pollinator’s biophysical regions. These data, consisting of over 10,000 bee encounters, were then compared to a database of almost 2,000 historical public and private insect collections amassed by researchers. With the first records beginning at 1915, scientists are able to compose a century-long assessment of pollinator populations in Vermont. “These collections are priceless,” […]
Posted in Biodiversity, Pollinators, Uncategorized, Vermont | No Comments »
03
Dec
(Beyond Pesticides, December 3, 2018) In August 2018, the Trump administration announced a reversal of a 2014 U.S. Fish and Wildlife (FWS) decision to ban neonicotinoid insecticides on National Wildlife Refuges. The administration’s action threatens not only pollinators, but contributes to the attack on biodiversity worldwide.  Tell Congress to protect biodiversity by insisting that the ban on neonicotinoid pesticides in wildlife refuges be reinstated. In 2014, FWS announced that all National Wildlife Refuges would join in the phase-out of neonics (while also phasing out genetically engineered crops) by January 2016. FWS “determined that prophylactic use, such as a seed treatment, of the neonicotinoid pesticides that can distribute systemically in a plant and can potentially affect a broad spectrum of non-target species is not consistent with Service policy. We make this decision based on a precautionary approach to our wildlife management practices and not on agricultural practices.” This move was not only intended to protect honey bees that have suffered average losses above 30% since 2006, but also the federally threatened and endangered pollinators that live in National Wildlife Refuges. However, it is not just pollinators who are affected. Recent research has found dramatic drops in overall insect abundance, leading entomologists to speak of an “insect apocalypse.” Various studies have found reductions of up to […]
Posted in Biodiversity, Fish and Wildlife Service (FWS), neonicotinoids, Pollinators, Take Action, Uncategorized, Wildlife/Endangered Sp. | No Comments »
30
Nov
(Beyond Pesticides, November 30, 2018) A study published this month in Science of the Total Environment reveals numerous pesticide residues persisting in soil, harming the viability of agricultural lands and increasing risk of off-site contamination. Funded by the Horizon 2020 programme of the European Commission, researchers from the European Diverfarming project at the University of Wageningen in the Netherlands suggest nations urgently reevaluate conventional land use and inputs including water, energy, fertilizers, machinery and pesticides. Researchers decrying the lack of soil protection policies endeavored to determine which pesticides had the highest soil persistence and toxicity to non-target species. Three hundred seventeen surface soil samples were analyzed from 11 European countries. Selected countries were those with the largest amounts of active agricultural land, characterizing six distinct cropping systems. Sampled soils purposefully represented different soil properties and were taken from crops with the highest pesticide use per hectare. Samples were then analyzed for the concentration of 76 pesticide residues. These 76 pesticides were selected as being most often applied on conventional crops. Eighty-three percent of samples contained varying degrees of pesticide residues, with 25 percent showing one pesticide residue and 58 percent showing mixtures of two or more. Only 17 percent of […]
Posted in Biodiversity, Contamination, contamination, DDT, Disease/Health Effects, Fungicides, Genetic Engineering, Glyphosate, International, Persistence, Pesticide Residues, tebuconazole, Uncategorized | No Comments »
21
Nov
(Beyond Pesticides, November 21, 2018) A study published last month in the Journal of Apicultural Research finds significant numbers of U.S. honey bees at risk after exposure to hazardous synthetic pesticides intended to control mosquitoes. With many beekeepers rarely given warning of insecticide spraying, researchers say the risk of losing colonies could increase. Advocates say fear of Zika and other mosquito-borne illnesses could result in counterproductive and reactionary insecticide spraying that will add further stress to managed and native pollinators already undergoing significant declines. Researchers aimed to determine whether neighboring honey bee colonies could be similarly affected by aerial insecticide spraying. To calculate the percentage of colonies that could be affected, density of honey bee colonies by county was compared with projections of conditions thought to be prone to regional Zika virus outbreaks. Researchers found 13 percent of U.S. beekeepers at risk of losing colonies from Zika spraying. In addition, it was determined that many regions of the U.S. best suited for beekeeping are also those with favorable conditions for Zika-prone mosquitoes to proliferate. These regions include the southeast, the Gulf Coast, and California’s Central Valley. “[Considering] all the threats facing bees,” says study lead author Lewis Bartlett of the […]
Posted in Beneficials, Biodiversity, Centers for Disease Control and Prevention (CDC), Climate Change, contamination, Insect-Borne Disease, Integrated and Organic Pest Management, Mosquitoes, Naled, Pesticide Drift, Pesticide Regulation, Pesticide Residues, Pollinators, Resistance, Uncategorized | 2 Comments »
01
Nov
(Beyond Pesticides, November 1, 2018) A new study offers fresh evidence that wild bumblebee pollinators are particularly vulnerable to the impacts of neonicotinoid (neonic) insecticides, finding that exposure to these compounds interferes with mating success and population stability. Researchers from Worcester Polytechnic Institute in Massachusetts, measuring real-world harms of neonicotinoids, indicate that the impacts they found to bumblebee “reproducers,” namely queen and drone (male) bees, does not bode well for the array of plant species that relies on them. Though advocates warn that destabilizing managed pollinators could threaten U.S. food production and exports, with food prices increasing as cost of bringing pollinators to farms increases, the study’s authors and advocates insist that the impacts of such widespread poisoning of wild bees could be felt well beyond agriculture. Researchers in the lab compare behavioral and psychological responses of virgin queens, workers, and male Bombus impatiens from multiple colonies to field-realistic doses of the neonicotinoid clothianidin. While every bee was given a replenishing supply of pollen based on body weight and energy demands, four distinct concentrations of diluted analytical-grade (pure) clothianidin (including a control with no pesticide added) were mixed into a nectar-like solution and fed to the bumblebees orally for 5 […]
Posted in Agriculture, Alternatives/Organics, Beneficials, Biodiversity, Clothianidin, contamination, Endocrine Disruption, Environmental Protection Agency (EPA), Habitat Protection, Increased Vulnerability to Diseases from Chemical Exposure, Inerts, Infertility, Lawns/Landscapes, Microbiata, Microbiome, Persistence, Pollinators, Take Action, US Department of Agriculture (USDA), Wildlife/Endangered Sp. | 2 Comments »
25
Oct
(Beyond Pesticides, October 25, 2018) A study published last month in Scientific Reports finds that eating sunflower pollen significantly reduces protozoan infection in bumblebees. Studying ecosystem services and what she calls “floral rewards,” evolutionary ecologist Lynn Adler, Ph.D. at the University of Massachusetts Amherst says sunflowers may provide a long sought after solution for improving bees’ immune system response to both disease and parasites. The researchers studied the protozoan Crithidia bombi, a common parasitic infection of bumble bees, known to impair learning and foraging, shorten lifespan and destabilize colony hierarchies by impacting queen bee behavior. From the outset of the study, Dr. Adler says, “the more sunflowers were grown at the farm, the lower the Crithidia load for the bees at that farm.” Knowing pollinators eat pollen as a source of protein and healthy fats, Dr. Adler hypothesized that both pollen and nectar might have medicinal effects against disease and parasites. However, her experiment did not show consistent results with nectar. After bees in the lab were starved for 4-6 hours, researchers fed individual worker bees from small colonies a drop of fructose fluid containing 6,000 Crithidia cells, being the approximate concentration bees may encounter in the wild while foraging. After […]
Posted in Alternatives/Organics, Biodiversity, Chemicals, Environmental Protection Agency (EPA), Habitat Protection, Increased Vulnerability to Diseases from Chemical Exposure, Pesticide Regulation, Pollinators, Uncategorized, Wildlife/Endangered Sp. | No Comments »
04
Oct
(Beyond Pesticides, October 4, 2018) According to new research from the University of Texas at Austin, glyphosate, the world’s most widely used agrichemical weed killer, may also be killing bees by impairing their gut microbiota, and subsequently, their immune systems. The study, published in the journal Proceedings of the National Academy of Sciences, titled Glyphosate perturbs the gut microbiota of honey bees, notes these findings as evidence glyphosate could very well be contributing to the sharp decline of pollinators seen throughout the world over the past decade. Researchers began with a single hive and collected several hundred worker bees. One group of bees was fed a sterile sugar syrup, while others were exposed to levels of glyphosate equal to what is found in conventional crop fields, lawns and highway medians. To aid tracking and recapture, bees were marked with colored dots based on their grouping. Researchers sampled 15 individuals from each group of worker bees right before and three days after reintroduction back to the hive. At both times, DNA from the insects’ guts was extracted to observe whether glyphosate had significantly altered microbial diversity within their organ system. Results found relatively minimal impacts to bees tested prior to their […]
Posted in Beneficials, Biodiversity, Glyphosate, Pollinators, Uncategorized | No Comments »