Pesticides and Biodiversity
Pesticides and Biodiversity
Pesticides are designed to suppress weeds, insects, fungi, and other organisms considered harmful to agriculture, but their ecological effects frequently extend far beyond the species they are intended to control. Research across terrestrial, freshwater, and agricultural ecosystems has documented pesticide residues and biological effects among plants, microorganisms, insects, soil animals, amphibians, reptiles, birds, bats, and aquatic invertebrates.
A growing body of research suggests that the ecological consequences of pesticides cannot be understood simply by measuring the total amount of chemicals applied. Toxicity, persistence, environmental movement, mixtures of multiple chemicals, repeated exposure, and sublethal effects can all influence the eventual impact on biodiversity. Some newer pesticides may be effective at much lower application rates while remaining highly biologically active, meaning reductions in kilograms of pesticides used do not necessarily translate into equivalent reductions in ecological risk.
The evidence also shows that pesticides rarely operate as an isolated environmental pressure. Their effects interact with habitat loss, agricultural intensification, reduced plant diversity, nutrient pollution, climate conditions, and other stresses. Understanding pesticide impacts therefore requires examining entire ecological communities and food webs rather than only individual target organisms.
Broad Effects of Pesticides on Biodiversity
A large international synthesis drawing on more than 1,700 studies found broadly negative pesticide effects on non-target plants, animals, and microorganisms across both terrestrial and aquatic environments. Other global assessments have mapped extensive regions where agricultural pesticide pollution poses risks to ecosystems.
Pesticides can reach organisms through numerous pathways. Chemicals applied to crops may drift beyond field boundaries, remain as residues in soil, move into groundwater and streams, accumulate in vegetation, or enter organisms through contaminated food. Once introduced into an ecosystem, they may affect organisms that were never intended to be exposed.
Ecological effects can include mortality, reduced reproduction, impaired growth, altered behavior, changes in species abundance, and shifts in the composition of biological communities. Even when concentrations are not immediately lethal, repeated or chronic exposure can alter ecosystem processes over time.
Mixtures present an additional challenge. Agricultural environments frequently contain residues of numerous insecticides, herbicides, fungicides, and other chemicals simultaneously. Ecological responses to these combinations may differ from predictions based on testing individual compounds.
Soil Biodiversity and Microorganisms
Agricultural soils contain complex communities of bacteria, fungi, protists, nematodes, springtails, mites, earthworms, and other organisms responsible for decomposition, nutrient cycling, soil formation, and plant productivity. Research increasingly identifies pesticide residues as an important pressure on these communities.
Large-scale European research has found pesticide residues widespread in agricultural soils and associated those residues with changes in both taxonomic biodiversity and ecological functions. Studies of soil microorganisms have similarly found that pesticide exposure can alter bacterial and fungal community composition.
Different groups of soil organisms do not respond equally. Fungal communities may react differently from bacterial communities, while nematodes, springtails, mites, and earthworms may show compound-specific responses. Some pesticides have been associated with reduced abundance or diversity among soil organisms, while others alter microbial processes involved in carbon and nitrogen cycling.
Earthworms are particularly important because they influence soil structure, organic-matter decomposition, microbial communities, and nutrient availability. Research examining pesticide-contaminated agricultural soils has found effects ranging from altered physiology and gut microbiomes to changes in population abundance.
These findings indicate that pesticide impacts below ground can have consequences extending beyond individual soil species. Changes to microbial and invertebrate communities may influence the ecological processes upon which agricultural productivity itself depends.
Pollinators and Beneficial Insects
Pollinators have become one of the most intensively studied examples of non-target pesticide exposure. Bees, butterflies, and other insects may encounter pesticides through pollen, nectar, soil, water, dust, vegetation, and residues carried outside treated fields.
Neonicotinoid insecticides have received particular attention. Field and experimental studies have associated exposure with reduced colony growth, impaired homing, altered foraging behavior, reduced reproductive success, and population changes among some bee species. Responses vary considerably among species and even among queens, workers, and males within the same species.
Pesticides can also interact with other stresses. Poor nutrition, habitat loss, parasites, fungicide exposure, and combinations of agricultural chemicals may modify how insects respond to insecticides.
Butterflies face both direct and indirect pesticide pressures. Insecticides can directly expose larvae or adults, while herbicides can reduce the host plants and flowering vegetation upon which butterflies depend. Research on monarch butterflies and other species illustrates how chemical exposure and habitat alteration can become interconnected.
Beneficial insects affected by pesticides are not limited to pollinators. Predators and parasitoids naturally suppress crop pests. Reducing these organisms can weaken biological pest control and potentially increase dependence on chemical pesticides.
Freshwater Ecosystems and Aquatic Food Webs
Pesticides applied on land can move into rivers, streams, wetlands, drainage systems, and groundwater through runoff, spray drift, erosion, and other pathways. Aquatic insects and other freshwater invertebrates are among the organisms shown to be particularly vulnerable.
Field research in agricultural streams has documented substantial reductions in macroinvertebrate biodiversity associated with pesticide contamination. Studies have also identified pesticides as important stressors affecting vulnerable insect populations in lowland agricultural waterways.
These effects can propagate through aquatic food webs. Many aquatic insects spend their juvenile stages underwater before emerging as terrestrial adults, where they become prey for birds, bats, spiders, and other animals. Contaminants accumulated in aquatic systems can therefore connect pesticide exposure in streams with organisms living on land.
Amphibians are another concern because their life cycles commonly span aquatic and terrestrial habitats. Research has investigated acute toxicity, chronic exposure, developmental effects, behavioral changes, and interactions between pesticides and other environmental stresses.
Complex mixtures are particularly important in freshwater environments. Monitoring programs frequently detect numerous pesticides in the same waterways, sometimes together with nutrients and other pollutants. Ecological responses to these mixtures may differ substantially from responses observed in single-chemical laboratory tests.
Birds, Bats, Amphibians, and Reptiles
Pesticide effects can extend through terrestrial food webs to vertebrate wildlife. Birds may be exposed directly through treated seeds and contaminated food or indirectly through reductions in insect prey.
Research in agricultural landscapes has found associations between pesticide use and bird abundance or biodiversity. Neonicotinoid use, for example, has been examined in relation to declines among insect-eating birds, while studies of treated seed have confirmed exposure among farmland bird species.
Bats may encounter pesticides by eating contaminated insects or through other environmental pathways. Studies have detected mixtures of pesticide residues in wild bats and have identified shortcomings in conventional pesticide-risk assessments for these animals. Because bats provide insect control, pollination, seed dispersal, and other ecological services, impacts on bat populations may have wider ecosystem consequences.
Reptiles have historically received less attention in pesticide research, but studies involving lizards demonstrate biochemical, reproductive, and exposure-related effects. Research suggests that many reptile species occupying agricultural landscapes may encounter substantial pesticide exposure.
Amphibians may be affected through contaminated water, agricultural habitats, and direct or indirect exposure during different stages of their life cycles. Reviews of the evidence emphasize the difficulty of translating laboratory toxicity results into realistic predictions of population-level effects in complex ecosystems.
Herbicides, Plants, and Farmland Vegetation
Herbicides influence biodiversity differently from insecticides because plants themselves are their primary targets. Their ecological effects can therefore arise both from direct toxicity to non-target vegetation and from the removal of plants used as habitat or food by other species.
Wild plants in and around farmland provide pollen, nectar, seeds, shelter, and host plants for insects, birds, and other wildlife. Intensive herbicide use can simplify these plant communities and reduce the ecological resources available to organisms occupying agricultural landscapes.
Butterflies provide an important example. Herbicide-driven reductions in larval host plants and flowering vegetation can indirectly reduce butterfly populations even when the herbicide does not directly kill the insects themselves. Research concerning monarch butterflies has examined the relationship between herbicide-resistant cropping systems, loss of milkweed from agricultural fields, pesticide exposure, and other environmental pressures.
Studies of agricultural vegetation also indicate that conventional toxicity testing may not adequately represent the diversity of wild plants or longer-term effects involving reproduction and plant communities. Protecting biodiversity therefore requires considering vegetation as part of an interconnected agricultural ecosystem rather than merely as weeds competing with crops.
Reducing Pesticide Pressure and Strengthening Ecological Pest Control
Research increasingly examines whether agricultural production can be maintained while reducing reliance on synthetic pesticides. Crop diversification, biological pest control, habitat management, and pesticide-free or reduced-pesticide production systems are among the approaches being investigated.
Studies involving thousands of agricultural fields and cropping systems indicate that diversification can sometimes reduce pesticide use while maintaining productive agriculture. Increasing plant diversity can provide habitat and resources for predators, parasitoids, and other organisms that naturally suppress crop pests.
Landscape structure also matters. Hedgerows, field margins, diverse vegetation, forests, and other semi-natural habitats can support beneficial species and may help buffer aquatic and terrestrial ecosystems from pesticide exposure.
Long-term comparisons of farming systems have found that systems using substantially fewer synthetic pesticides can support greater in-field biodiversity and improved biological soil quality. Biological-control approaches, including naturally occurring fungi and other pest enemies, provide additional possibilities for reducing chemical dependence.
These strategies suggest that biodiversity itself can become part of pest management. Diverse ecological communities may strengthen natural pest regulation, potentially creating agricultural systems in which maintaining biodiversity and reducing pesticide use reinforce one another.
Conclusion
The accumulated research shows that pesticide impacts on biodiversity extend far beyond the organisms pesticides are intended to control. Residues occur in soils, vegetation, streams, wetlands, wildlife, and food webs, exposing organisms ranging from microorganisms and earthworms to bees, butterflies, amphibians, birds, bats, and reptiles.
The ecological significance of pesticide use cannot be measured solely by the quantity of chemicals applied. Toxicity, persistence, mixtures, repeated exposure, sublethal effects, and interactions with other environmental pressures all influence ecological outcomes. A pesticide regime using smaller quantities of more potent compounds may not necessarily represent a reduction in biodiversity risk.
At the same time, research points toward alternatives. Crop diversification, habitat restoration, biological pest control, protection of beneficial organisms, reduced chemical inputs, and redesigned agricultural systems can potentially lessen pesticide pressure while supporting agricultural production.
The broader challenge is therefore not simply determining whether individual pesticides are toxic. It is understanding how chemical pest control changes biological communities and ecosystem processes over time. Protecting biodiversity requires viewing pesticides as part of a larger ecological system linking agriculture, soil, water, plants, wildlife, and the natural processes upon which both ecosystems and food production depend.
Broad Effects of Pesticides on Biodiversity
| Jakob Wolfram et al. | Science | 2026-02-05
Finds that declining pesticide application quantities can conceal increasing ecological toxicity, potentially undermining international biodiversity-protection targets.
| RPTU University Kaiserslautern-Landau | EurekAlert | 2026-02-05
Reports research showing that trends in pesticide toxicity are moving in the wrong direction for achieving the global goal of reducing pesticide risks to biodiversity.
| RPTU University Kaiserslautern-Landau | Phys.org | 2026-02-05
Explains why measuring pesticide use by kilograms alone can be misleading when increasingly potent compounds produce greater ecological toxicity at lower application rates.
| European Environment Agency | EEA | 2026
Tracks pesticide contamination of European rivers, lakes, and groundwater and assesses how frequently environmental quality thresholds are exceeded.
| European Environment Agency | EEA | 2026
Places pesticide pollution within the broader problem of chemical pressures contributing to biodiversity and ecosystem degradation.
| European Environment Agency | EEA | 2026
Examines chemical pollution pressures on ecosystems, including the difficulty of understanding pesticide effects on pollinators and other non-target species.
| Isabelle Musselli and Claudia Ituarte-Lima | Transnational Environmental Law | 2026
Examines biodiversity protection, European pesticide regulation, international trade rules, and tensions surrounding stronger restrictions on hazardous agricultural chemicals.
| Nian-Feng Wan et al. | Nature Communications | 2025-02-13
A global synthesis of more than 1,700 studies finds consistently negative pesticide effects on non-target plants, animals, and microorganisms across terrestrial and aquatic ecosystems.
| UK Centre for Ecology & Hydrology | EurekAlert | 2025-02-13
Summarizes a major global meta-analysis concluding that pesticides are an important contributor to biodiversity decline well beyond the pests they are intended to control.
| Review authors | Environmental Pollution | 2025-02-01
Reviews how pesticide spray drift carries biologically active chemicals beyond treated fields and exposes neighboring habitats and non-target species.
| European Environment Agency | EEA | 2023
Reviews pesticide use in Europe and its effects on biodiversity, ecosystem functioning, water quality, soil organisms, pollinators, and human health.
| Dario Piselli | European Environment Agency | 2023
Explains why pesticide pollution remains a significant ecological problem in Europe despite regulation and efforts to reduce chemical dependence.
| European Environment Agency | EEA | 2023
Reports that Europe needs stronger action to reduce pesticide risks to biodiversity, ecosystems, and human health.
| Joint Research Centre | European Commission | 2023
Examines interactions between pollution and biodiversity loss and discusses pesticide reduction as part of European biodiversity and environmental policy.
| Alexander Feckler et al. | Current Opinion in Environmental Sustainability | 2023
Discusses the need to reduce chemical pollution to levels that no longer damage biodiversity and ecosystem functions under global biodiversity commitments.
| United Nations Environment Programme | UNEP | 2022
Reviews environmental and health effects of pesticides and fertilizers and discusses approaches for minimizing pollution and ecological damage.
| European Commission | European Commission | 2022
Evaluates implementation of European pesticide policy and the continuing environmental risks associated with reliance on chemical plant-protection products.
| Fiona H. M. Tang et al. | Nature Geoscience | 2021-03-29
Maps global agricultural pesticide risk and identifies extensive areas where pesticide pollution threatens terrestrial and aquatic ecosystems.
| Sharon Oosthoek | Nature | 2013-06-17
Reports landmark research linking pesticides in European streams with substantial losses of aquatic invertebrate biodiversity.
| Food and Agriculture Organization | FAO | n.d.
Provides an overview of pesticide pollution pathways and the consequences of pesticide residues entering soil, water, food webs, and non-target organisms.
Pesticides, Soil Biodiversity, and Microorganisms
| European Soil Data Centre | European Commission JRC | 2026-07-19
Provides datasets connecting measured pesticide residues in European soils with extensive biological observations of soil organisms.
| J. Köninger et al. | Nature | 2026-01-28
A large European field study finds pesticide residues widespread in agricultural soils and identifies them as important predictors of changes in soil biodiversity and ecosystem functions.
| Brajesh K. Singh and Alexandre Pedrinho | Nature | 2026-01-28
Discusses evidence that real-world mixtures of pesticide residues can alter soil organisms and the ecological functions they perform.
| University of Zurich | EurekAlert | 2026-01-28
Reports European research showing significant associations between pesticide contamination and changes in soil bacteria, fungi, protists, and invertebrates.
| University of Zurich | Phys.org | 2026-01-28
Describes how pesticide residues affect multiple groups of soil organisms rather than only the organisms targeted during pest control.
| J. Köninger et al. | European Commission Joint Research Centre | 2026
Provides the JRC record for the Europe-wide investigation of pesticide residues and their relationships with soil taxonomic and functional biodiversity.
| Study authors | Geoderma | 2026
Examines how pesticide residues in intensively cultivated Mollisol croplands are associated with biodiversity changes across several levels of the soil food web.
| Review authors | Journal of Environmental Science and Health, Part B | 2026
Reviews pesticide disruption of soil microbial communities, their capacity for recovery, and implications for long-term soil health.
| Review authors | Journal of Environmental Science and Health, Part B | 2026
PubMed record for a review examining pesticide disturbance, resilience, and recovery in the microbial communities essential to soil ecosystem functioning.
| Carolina Honert et al. | Scientific Reports | 2025-01-21
Measures pesticide residues in soil and vegetation and demonstrates multiple routes through which insects can encounter agricultural pesticides outside direct spraying events.
| Mark Swaine et al. | FEMS Microbiology Ecology | 2025
Uses meta-analysis to identify microbial indicators that may help measure pesticide-related ecological damage and improve soil ecotoxicology assessments.
| Review authors | Environmental Research | 2024
Reviews evidence that herbicides and insecticides can restructure soil microbial communities with consequences for nutrient cycling and plant-soil interactions.
| Research institutions | Phys.org | 2023-06-29
Explores connections between chemical pollution and biodiversity loss and argues that chemical impacts need greater recognition in conservation policy.
| Beaumelle et al. | Journal of Applied Ecology | 2023
Meta-analysis evaluates pesticide effects on soil-fauna communities and demonstrates risks to organisms involved in decomposition, nutrient cycling, and soil formation.
| Review authors | Environmental Microbiology Reports | 2023
Systematically reviews evidence that neonicotinoid insecticides alter the composition, abundance, and activity of soil microbial communities.
| Review authors | Environmental Research | 2022
Reviews the ecotoxicological effects of residual pesticides on beneficial soil bacteria and the ecosystem services those microorganisms provide.
| Review authors | Microorganisms | 2022
Reviews how modern agricultural practices, including pesticide use, influence soil microbial diversity and biological soil health.
| European Soil Data Centre | European Commission JRC | 2022
Introduces European datasets that allow researchers to compare measured soil pesticide residues with indicators of soil biodiversity.
| Article authors | Ecosystem Health and Sustainability | 2017
Discusses the agriculture-food-water-environment nexus and the need to balance agricultural production with protection of soil, water, and biodiversity.
| Andrew N. Gillison et al. | Ecology and Society | 2004
Examines how different coffee-production systems, including differences in agricultural intensification, affect biodiversity across multiple organism groups in Sumatra.
Pollinators, Butterflies, and Other Insects
| Study authors | Nature Ecology & Evolution | 2025-12-10
Finds that pesticide exposure and habitat loss combine to reduce wild-bee communities in agricultural fields, demonstrating that chemical and habitat pressures can accumulate.
| Review authors | Science of the Total Environment | 2024-12-01
Reviews current evidence on pesticide impacts on insect pollinators and identifies important gaps in evaluating mixtures, chronic exposure, and sublethal effects.
| Review authors | Environments | 2024-08-21
Reviews evidence connecting agricultural pesticide use with reductions in insect abundance, species diversity, and ecosystem functions.
| Braeden Van Deynze et al. | PLOS ONE | 2024-06-20
Finds insecticide use more strongly associated with declines in butterfly species richness and abundance in the American Midwest than herbicides, land use, or climate variables.
| Ewald et al. | Insect Conservation and Diversity | 2024
Uses roughly five decades of monitoring to examine major changes in cereal-field invertebrate populations within an intensively farmed English landscape.
| Lieneke Bakker et al. | Journal of Applied Ecology | 2022-01-19
Finds evidence that landscape-wide insecticide use is negatively associated with beneficial arthropod abundance measured through field sampling.
| Nian-Feng Wan et al. | eLife | 2018
Finds that increasing plant diversity with border crops can strengthen biological pest control, reduce insecticide use, and improve crop yields.
| B. A. Woodcock et al. | Science | 2017-06-30
Large-scale European field experiments find country-specific effects of neonicotinoid seed treatments on honey bees and wild bees.
| Nadejda Tsvetkov et al. | Science | 2017-06-30
Finds that chronic exposure to commonly used neonicotinoids near corn crops can reduce honey-bee health and interact with other agricultural chemicals.
| Thomas James Wood and Dave Goulson | Environmental Science and Pollution Research | 2017-06-07
Reviews evidence published after 2013 on environmental risks of neonicotinoids to pollinators, aquatic organisms, and terrestrial food webs.
| Ben A. Woodcock et al. | Nature Communications | 2016-08-16
Links long-term neonicotinoid use on oilseed rape with population changes among wild bee species across England.
| Science Media Centre | Science Media Centre | 2016-08-16
Provides independent expert reaction to evidence associating neonicotinoid use with long-term declines in wild-bee populations.
| Maj Rundlöf et al. | Nature | 2015-04-22
Field experiments show that neonicotinoid-treated oilseed rape negatively affects wild bees, demonstrating differences in pesticide vulnerability among pollinator species.
| Christy A. Morrissey et al. | Environment International | 2015-01
Reviews global neonicotinoid contamination of surface waters and assesses ecological risks to aquatic insects and other invertebrates.
| Study authors | PeerJ | 2015
Examines whether neonicotinoid insecticide use is associated with declines of widespread butterfly species in California.
| Caspar A. Hallmann et al. | Nature | 2014-07-09
Finds that declines in insect-eating birds in the Netherlands are associated with high concentrations of the neonicotinoid imidacloprid in surface waters.
| Dave Goulson | Journal of Applied Ecology | 2013-06-13
Reviews environmental risks from neonicotinoids, emphasizing persistence, movement through soils and water, and exposure of non-target insects.
| Mark Otieno et al. | Biological Conservation | 2011-10
Examines how local farm management and surrounding landscapes influence pollination and biological-control services in a Kenyan agricultural ecosystem.
| Study authors | Basic and Applied Ecology | 2010-03
Examines pesticide effects on pollinator species richness at multiple spatial scales and demonstrates that chemical exposure can influence pollinator communities beyond individual fields.
| Study authors | Journal of Economic Entomology | 2002
Compares insect densities and diversity under different insecticide treatments in vegetable fields, including effects on non-target arthropods.
Freshwater Ecosystems, Amphibians, Birds, and Wildlife
| Thomas Perrot et al. | Agriculture, Ecosystems & Environment | 2026-09-01
Links increasing agricultural insecticide use with declining abundance of insectivorous birds, highlighting indirect food-web effects of pesticides.
| Review authors | Journal of Hazardous Materials | 2026-08-03
Reviews pesticide effects on amphibians and discusses challenges in translating laboratory toxicity studies into realistic ecological risk assessments.
| Jing Fang et al. | Environment International | 2026-08
Finds pesticides can override other environmental stressors in driving macroinvertebrate diversity loss in streams and identifies important ecological thresholds.
| Lin Hou et al. | Environmental Science & Technology | 2025-04-15
Finds pesticide pollution associated with reduced functional diversity among macroinvertebrates inhabiting urban aquatic ecosystems.
| Review authors | Environmental Research | 2025-02-15
Reviews evidence concerning acute, chronic, developmental, and behavioral effects of neonicotinoid insecticides on amphibians.
| Study authors | Science of the Total Environment | 2024-03-10
Uses multiple lines of evidence from five regions of the United States to identify pesticides as stressors affecting small-stream invertebrate communities.
| Study authors | PeerJ | 2023
Finds pesticide use associated with reduced amphibian and reptile diversity in tropical agricultural landscapes in Indonesia.
| Study authors | Environmental Pollution | 2021-03-15
Experimental work shows repeated insecticide pulses can intensify harmful effects on stream macroinvertebrate biodiversity and ecological functioning.
| Study authors | Avian Research | 2021
Examines relationships among pesticide and fertilizer use, insect abundance, and aerial insectivorous birds in agricultural landscapes.
| Yijia Li, Ruiqing Miao and Madhu Khanna | Nature Sustainability | 2020-08-10
Finds associations between neonicotinoid insecticide use and declines in bird biodiversity across the United States.
| Study authors | Biological Conservation | 2020-01
Examines consequences of intensive GMO-based agriculture and associated pesticide regimes for native amphibians under realistic field conditions.
| Study authors | Lancet Planetary Health | 2020
Finds that pesticide pollution in freshwater can disrupt ecological controls on disease-carrying snails and potentially increase schistosomiasis transmission.
| Study authors | Scientific Reports | 2018
Combines telemetry and passive sampling to investigate real-world pesticide exposure of amphibians moving through agricultural landscapes.
| EFSA Panel on Plant Protection Products | EFSA Journal | 2018
Reviews the scientific basis for assessing pesticide risks to amphibians and reptiles and identifies shortcomings in conventional pesticide-risk frameworks.
| Study authors | Science of the Total Environment | 2015-08-15
Shows that forested headwaters and landscape buffers can reduce pesticide impacts on stream macroinvertebrate communities.
| Mikhail A. Beketov et al. | Proceedings of the National Academy of Sciences | 2013-06-17
Landmark field research finds substantial reductions in stream-invertebrate biodiversity at pesticide concentrations occurring in real agricultural landscapes.
Meta-analysis evaluates how pesticide and fertilizer exposure affects amphibian survival and growth.
| Tessa C. Van Dijk et al. | PLOS ONE | 2013
Reports declining abundance of aquatic macroinvertebrates in surface waters contaminated with the neonicotinoid imidacloprid.
| Reinier M. Mann et al. | Environmental Pollution | 2009-11
Reviews the complex risks agricultural chemicals pose to amphibians through direct toxicity, habitat contamination, and interactions with other environmental stresses.
| Study authors | Environmental Pollution | 2008
Tests ecological consequences of pesticide spray drift in streams and evaluates mitigation measures intended to protect aquatic invertebrates.
Reducing Pesticide Pressure and Emerging Research
| The Guardian | The Guardian | 2026-08-20
Explores conversion of pesticide-dependent lawns into diverse native-plant habitats capable of supporting insects, birds, and other wildlife.
| Letodi Luki Mathulwe | The Conversation / Phys.org | 2026-07-27
Examines research into a naturally occurring soil fungus as a biological-control tool against African armyworm where conventional chemical approaches have limitations.
| The Guardian | The Guardian | 2026-07-26
Reports opposition from French beekeepers to renewed authorization of pesticides considered dangerous to pollinators.
| Alexandra Hostert | Phys.org | 2026-07-23
Reports research showing that increasing plant diversity can strengthen natural pest control and potentially lessen agricultural reliance on insecticides.
| The Guardian | The Guardian | 2026-06-10
Examines worldwide pollinator decline, including pesticide exposure, and connects biodiversity loss with food production and human health.
| The Guardian | The Guardian | 2026-05-20
Covers protests directed at manufacture of pesticides activists argue are contributing to bee and other pollinator declines.
| Helmholtz Centre for Environmental Research | EurekAlert | 2025-11-06
Reports evidence that plant-protection products can alter behavior in non-target organisms even at environmentally relevant concentrations.
| Cassandra Uthoff et al. | Environment International | 2025-08-26
Tests sublethal behavioral effects of plant-protection products across very different organisms, including honey bees and zebrafish.
| Research consortium | EurekAlert | 2025-03-12
Examines pesticide pollution and ecological pressures across the Upper Rhine landscape, illustrating how chemical exposure interacts with broader agricultural land use.
| University of Birmingham | EurekAlert | 2025-01-22
Reports an AI-assisted analysis of English lakes identifying insecticides and fungicides among important chemical pressures associated with ecological harm.
| Queen Mary University of London | EurekAlert | 2025-01-15
Reports research indicating that pesticide effects on bees can differ among tissues and biological processes, complicating simple toxicity assessments.
| Reuters | Reuters | 2024-10-30
Reports on a biological herbicide used against parasitic witchweed in Kenya, illustrating alternatives to conventional chemical weed control.
| Research institutions | Phys.org | 2024-10
Reports field evidence that greater biodiversity and ecological interactions can reduce herbivore crop damage and lessen dependence on pesticides.
| Elia Moretti and Michael Benzaquen | arXiv | 2024-07-29
Develops a bioeconomic model exploring relationships among land consolidation, pesticide use, agricultural production, and farmland biodiversity.
| European Commission Joint Research Centre | European Commission | 2022-12-14
Examines links between the EU zero-pollution agenda and biodiversity protection, including reductions in pesticide pollution and ecological risk.
| Cornelia Sattler et al. | Insects | 2021-03-21
A Cambodian rice-field case study finds that reducing pesticide use while increasing crop diversification can provide both ecological and economic benefits.
| Study authors | Ecosystem Health and Sustainability | 2019
Investigates ecotoxicity in water, soil, and sediment from agricultural areas of Tanzania's Kilombero Valley Ramsar wetlands, highlighting pesticide risks to sensitive wetland ecosystems.
| A. E. Larsen and F. Noack | Proceedings of the National Academy of Sciences | 2017
Uses data from roughly 100,000 agricultural fields to identify landscape characteristics associated with patterns of insecticide use.
| Study authors | Ecosystem Health and Sustainability | 2017
Examines ecological limits to agricultural intensification and the challenge of maintaining biodiversity and ecosystem services in productive landscapes.
| Research institutions | Phys.org | 2013-06
Reports major European research showing that pesticide contamination can significantly reduce aquatic biodiversity at concentrations observed in real streams.
Birds, Bats, Reptiles, and Other Wildlife
| Anne-Christine Monnet et al. | Proceedings of the Royal Society B | 2026-01-14
Analysis of 64 common bird species in French croplands finds bird abundance generally higher where local pesticide purchases are lower, even after accounting for other aspects of agricultural intensification.
| Stefan Lorenz et al. | Environmental Pollution | 2026
Pesticide residues in insectivorous birds and bats were associated with their use of aquatic habitats, suggesting emerging aquatic insects can transport agricultural pesticides into terrestrial food webs.
| Audrey Bailly et al. | Environmental Research | 2025-11-15
Finds pesticide residues in more than four-fifths of sampled farmland passerines, with contamination occurring around both conventional and organic farmland.
| Study authors | Environmental Pollution | 2025
Analysis of eight bat species in Yunnan detected numerous pesticide compounds and shows how agricultural landscapes can expose diverse bat communities to complex pesticide mixtures.
| Study authors | Science of the Total Environment | 2023
Detects several neonicotinoids in farmland birds even after restrictions on agricultural uses, illustrating persistence and multiple pathways of wildlife exposure.
| Study authors | Science of the Total Environment | 2023
Develops non-destructive approaches for monitoring pesticide exposure in wild bats, an understudied group providing insect control, pollination, and seed-dispersal services.
| Amy C. Brooks et al. | Environmental Toxicology and Chemistry | 2022
Evaluates dermal and dietary pesticide exposure pathways in bats and discusses shortcomings in existing wildlife pesticide-risk assessments.
| Camila Guimarães Torquetti et al. | Science of the Total Environment | 2021-02-10
Reviews pesticide exposure in bats and highlights major knowledge gaps concerning tropical species, chronic exposure, pesticide mixtures, and population-level consequences.
| Study authors | Chemosphere | 2021
Demonstrates reproductive tissue damage in fruit-eating bats after short-term exposure to environmentally relevant concentrations of the pyrethroid deltamethrin.
| Review authors | Brazilian Journal of Biology | 2020
Reviews toxicological effects of pesticides on bats and emphasizes risks to species that provide insect control, pollination, seed dispersal, and forest-regeneration services.
| Study authors | Science of the Total Environment | 2020
Confirms exposure of multiple farmland bird species to clothianidin following ordinary sowing of treated cereal seed.
| EFSA Panel on Plant Protection Products | EFSA Journal | 2019
Concludes that conventional pesticide assessments for birds and mammals do not adequately protect bats and recommends development of bat-specific risk assessment.
| Study authors | Chemosphere | 2019
Examines biochemical effects of beta-cypermethrin and the fungicide myclobutanil in lizards, illustrating pesticide risks to reptiles rarely included in standard ecological testing.
| Li Chen et al. | Ecotoxicology and Environmental Safety | 2019
Uses a tri-trophic food-web experiment to investigate reproductive effects of alpha-cypermethrin exposure in lizards.
| Study authors | Environmental Pollution | 2016
Investigates pesticide exposure in common wall lizards living in vineyards and develops minimally invasive biomarkers for monitoring effects.
| Study authors | Biological Conservation | 2016
Evaluates pesticide exposure risk for European reptiles and finds many species occurring in agricultural landscapes may face substantial exposure.
Bees, Pollinators, and Beneficial Insects
| Study authors | Science of the Total Environment | 2025
Field research finds combined thiacloprid and prochloraz exposure substantially reduced offspring production in red mason bees.
| Review authors | Science of the Total Environment | 2024
Reviews global pesticide trends and research on insect pollinators, identifying major geographic and taxonomic gaps in knowledge.
| Study authors | Ecology | 2024
Links real-world agrochemical exposure in wild bumblebees with changes in locomotor activity, demonstrating sublethal behavioral effects under field conditions.
| Sebastian Shepherd et al. | Heliyon | 2024
Semi-field research finds combined exposure to clothianidin and common fungicides can increase honey-bee mortality and reduce colony performance.
| Karoline Wueppenhorst et al. | Ecotoxicology and Environmental Safety | 2024
Large German field experiment examines interacting effects of fungicide exposure and pollen limitation on honey-bee colonies.
| Michelle Z. Hotchkiss et al. | Applied and Environmental Microbiology | 2024
Tests field-realistic chlorothalonil exposure in bumblebees and provides useful evidence regarding fungicides, bee microbiomes, and host performance.
| Janine Schwarz et al. | Environment International | 2022
Semi-field experiment evaluates solitary-bee fitness following exposure to sulfoxaflor alone and in combination with a fungicide, providing important evidence about newer insecticides.
| Review authors | The Science of Nature | 2022
Reviews lethal and sublethal pesticide effects on beneficial insects including pollinators, predators, parasitoids, and dung-associated insects.
| Study authors | Scientific Reports | 2021
Finds field-realistic imidacloprid exposure causes bumblebees to make less efficient foraging decisions.
| Study authors | Science of the Total Environment | 2021
Shows pollen quality and nutrition can influence honey-bee tolerance to pesticide exposure, demonstrating interactions between habitat quality and chemical stress.
| Study authors | Science of the Total Environment | 2021
Field study finds neonicotinoid residues in soil associated with reduced richness of several wild-bee functional guilds.
| Study authors | Scientific Reports | 2021
Seven-year US survey documents widespread exposure of honey-bee colonies to complex mixtures of insecticides, fungicides, herbicides, and miticides.
| Philipp Uhl and Carsten A. Brühl | Environmental Toxicology and Chemistry | 2019
Reviews pesticide exposure and effects across the diverse community of flower-visiting insects and identifies weaknesses in European risk assessment.
| David G. James | Insects | 2019
Finds field-relevant imidacloprid exposure can reduce adult monarch-butterfly longevity, extending pesticide concerns beyond bees.
| Study authors | Science of the Total Environment | 2019
Shows thiamethoxam-related homing failure in honey bees can interact with Varroa infestation and environmental conditions.
| Study authors | PLOS ONE | 2018
Demonstrates that queens, workers, and males of the same bumblebee species can differ substantially in their responses to chronic neonicotinoid exposure.
| Study authors | Proceedings of the Royal Society B | 2018
Finds imidacloprid exposure can reduce activity and delay nest initiation in nest-founding bumblebee queens.
| Study authors | Ecotoxicology | 2018
Reports that very low concentrations of imidacloprid can reduce bumblebee motivation to forage even without obvious impairment of flight performance.
| Dara A. Stanley et al. | Scientific Reports | 2017
Tests chronic field-realistic thiamethoxam exposure in mature bumblebee colonies and provides useful evidence about circumstances in which colony-level effects may be limited.
| Study authors | Environmental Science & Technology | 2017
Field exposure to thiacloprid-treated raspberry crops was associated with premature bumblebee colony death, lower colony weight, and reduced production of reproductives.
| Study authors | Functional Ecology | 2016
Uses RFID tracking to investigate thiamethoxam effects on bumblebee foraging, homing, and colony development under free-flying conditions.
| Geraldine A. Wright et al. | Nature | 2015
Shows honey bees and bumblebees do not necessarily avoid neonicotinoid-contaminated food and can preferentially consume solutions containing some neonicotinoids.
| Study authors | PLOS ONE | 2014
Finds imidacloprid exposure altered Asian honey-bee foraging behavior and reduced avoidance of predators.
| Dara A. Stanley et al. | Ecotoxicology | 2014
Demonstrates field-realistic imidacloprid exposure substantially reduced bumblebee pollen-foraging efficiency.
| Penelope R. Whitehorn et al. | Science | 2012-04-20
Landmark experiment finds field-realistic imidacloprid exposure reduced bumblebee colony growth and production of new queens.
| Mickaël Henry et al. | Science | 2012-04-20
Demonstrates nonlethal thiamethoxam exposure can impair honey-bee homing and increase mortality among free-ranging foragers.
| Richard J. Gill et al. | Nature | 2012
Shows combined exposure to neonicotinoid and pyrethroid insecticides can impair bumblebee foraging and reduce colony success.
Soil Fauna, Microbes, Earthworms, and Nematodes
| José Ignacio Marín-Guirao et al. | Pest Management Science | 2026
Compares three nematicides and finds substantial differences in their effects on fungal communities, nematode diversity, and soil ecological functions.
| Camilla Drocco et al. | Environmental Toxicology and Chemistry | 2026
Field experiment investigates single and sequential herbicide, insecticide, and fungicide applications on soil microbes and free-living nematodes.
| Study authors | Environmental Toxicology and Chemistry | 2026
Tests individual and sequential pesticide applications on springtails and mites, showing taxon-specific responses within soil microarthropod communities.
| Review authors | Science of the Total Environment | 2026
Systematic review evaluates pesticide sensitivity of earthworms and enchytraeids in Brazilian agricultural research and identifies major tropical-soil research gaps.
| Bang Ni et al. | Proceedings of the National Academy of Sciences | 2025
Finds increasing diversity of pesticides can impair soil microbial functions and alter microbial ecological strategies.
| Study authors | Environmental Pollution | 2025
Compares abrupt and gradual pesticide applications and finds fungal communities respond more strongly than bacterial communities.
| Study authors | Science of the Total Environment | 2025
Finds lower gut-microbiome biodiversity in earthworms from conventionally managed agricultural soils, with changes associated with chlorpyrifos exposure.
| Review authors | Environmental Science and Pollution Research | 2025
Reviews earthworms as indicators for assessing pesticide-contaminated soil and ecological soil health.
| Study authors | Pesticide Biochemistry and Physiology | 2025
Reports imidacloprid residues associated with reduced abundance and diversity of soil nematodes in maize rhizosphere soils.
| Study authors | Environmental Pollution | 2025
Field experiment examines how mixtures of atrazine, nicosulfuron, and mesotrione alter soil bacterial and fungal communities and nitrogen cycling.
| Study authors | Environmental Pollution | 2024
Finds field-realistic acetamiprid exposure can change the diversity and community structure of natural soil arthropods.
| Study authors | Environmental Geochemistry and Health | 2024
Investigates carbendazim effects on earthworm enzymes and microbial functional diversity in a soil-earthworm system.
| Jorge Tomás Schoffer et al. | Environmental Science and Pollution Research | 2024
Examines copper accumulation from copper-based pesticides in agricultural soils and avoidance responses of ecologically important earthworms.
| Study authors | Soil Biology and Biochemistry | 2024
Finds the organophosphate ethyl-parathion can alter interactions among earthworms, soil microbiota, gut communities, and cast microorganisms.
| Fawzy Eissa et al. | Pesticide Biochemistry and Physiology | 2024
Reviews effects of agricultural pesticides on earthworms, honey bees, predators, parasitoids, and other non-target invertebrates.
| Study authors | Chemosphere | 2023
Finds repeated applications of insecticides, herbicides, and fungicides can alter soil microbial community composition and important microbial functions.
| Qian Tang et al. | Heliyon | 2023
Examines how chlorantraniliprole affects soil bacterial and fungal community structure over an extended period.
| Study authors | Environmental Pollution | 2023
Investigates molecular mechanisms that may allow some earthworm populations to persist despite long-term pesticide exposure in intensively cultivated fields.
| Study authors | Environmental Toxicology and Chemistry | 2022
Meta-analysis finds springtails among the most pesticide-sensitive groups of soil fauna and argues for stronger inclusion in ecological risk assessment.
| Study authors | Science of the Total Environment | 2022
Finds real-world pesticide mixtures in conventionally managed agricultural soils can harm several groups of non-target soil invertebrates.
| Study authors | Chemosphere | 2022
Compares twenty pesticides and finds multiple compounds alter microbial groups and functions involved in soil carbon cycling.
| Study authors | Soil Security | 2021
Models possible global earthworm population declines associated with residues from dozens of pesticide active ingredients in major cropping systems.
| Study authors | Environmental Science and Pollution Research | 2018
Reviews pesticide sensitivity in Aporrectodea caliginosa and argues that ecologically realistic earthworm species should complement standard regulatory test organisms.
| Patrick Lavelle et al. | Comptes Rendus Biologies | 2004
Discusses how maintaining diverse soil-fauna communities can contribute to biological pest control and reduce dependence on chemical pesticides.
Freshwater Biodiversity and Aquatic Food Webs
| Alexandre J. W. Michel et al. | Aquatic Toxicology | 2026
Uses mesocosms in an agricultural constructed wetland to examine behavioral and biochemical responses of Gammarus to pesticide and nitrate mixtures.
| Hannah Weiss et al. | Environmental Research | 2026
Systematically reviews laboratory evidence on glyphosate and glyphosate-based herbicide effects during amphibian development from early embryos through metamorphosis.
| Study authors | Environmental Research | 2025
Detects extensive pesticide mixtures in water, sediment, and fish from the Tagus River basin and identifies potential ecological risks to aquatic organisms.
| Study authors | Environment International | 2024
Screening of hundreds of chemicals in European streams finds pesticides and biocides among the dominant contributors to ecological chemical footprints.
| Study authors | Science of the Total Environment | 2021
Shows that real agricultural pesticide mixtures can create risks far beyond assessments focused on individual active ingredients.
| Study authors | Water Research | 2021
Large Central European study identifies pesticides as dominant stressors reducing vulnerable insect populations in lowland agricultural streams.
| Review authors | International Journal of Molecular Sciences | 2021
Reviews physiological effects of neonicotinoids on non-target aquatic invertebrates and vertebrates.
| Study authors | Water Research | 2020
Surveys nearly 100 pesticides across Swedish agricultural streams and compares chemical contamination with macroinvertebrate, nematode, and algal communities.
| Study authors | Environmental Toxicology and Chemistry | 2019
Tests acute toxicity of mixtures containing imidacloprid and tebuconazole across four freshwater invertebrate species.
| Study authors | Aquatic Toxicology | 2018
Mesocosm experiment compares ecological effects of imidacloprid with a mixture of five neonicotinoids on Mediterranean aquatic-invertebrate communities.
| Study authors | Science of the Total Environment | 2018
Finds responses to mixtures of insecticide, herbicide, and nutrients can differ from predictions based on single-chemical exposures.
| Mikael Gustavsson et al. | Science of the Total Environment | 2017
Evaluates more than a decade of Swedish stream monitoring and finds complex pesticide mixtures frequently exceed ecological risk thresholds.
| Meaghean C. Finnegan et al. | Environmental Toxicology and Chemistry | 2017
Characterizes acute and chronic thiamethoxam toxicity across aquatic primary producers, invertebrates, and fish.
| Christy A. Morrissey et al. | Environment International | 2015
Reviews global neonicotinoid contamination in surface water and documents particular sensitivity among aquatic insects.
| J. C. Anderson et al. | Science of the Total Environment | 2015
Reviews neonicotinoid occurrence, fate, exposure, and biological effects in Canadian aquatic environments.
| L. W. Pisa et al. | Environmental Science and Pollution Research | 2015
Reviews effects of neonicotinoids and fipronil across terrestrial, freshwater, and marine non-target invertebrates.
| Study authors | Environmental Pollution | 2014
Field bioassays in pesticide-contaminated agricultural ditches examine combined roles of pesticides, nutrients, oxygen, and other environmental conditions in aquatic-invertebrate performance.
Herbicides, Plants, Butterflies, and Farmland Vegetation
| Study authors | Science of the Total Environment | 2025
Finds larval exposure to a fungicide or fungicide-herbicide mixture can reduce survival and later reproductive performance in a non-target butterfly.
| Study authors | Pest Management Science | 2025
Shows weed biodiversity and herbicide intensity interact, and examines whether decision-support systems can reduce chemical inputs while maintaining diverse arable-weed communities.
| Study authors | Environmental Toxicology and Chemistry | 2025
Detects multiple pesticide residues in monarch butterflies following a mass mortality event, with several pyrethroids occurring near lethal concentrations.
| Review authors | Insects | 2024
Reviews population trends and stressors affecting western monarch butterflies, including neonicotinoids, herbicides, habitat loss, and climatic change.
| Buddhadev Mallick et al. | Journal of Experimental Zoology | 2023
Reviews direct and indirect pathways through which herbicides can reduce butterfly populations and diversity by removing larval host and nectar plants.
| Study authors | Environmental Science and Pollution Research | 2020
Three-year field experiment finds sublethal herbicide exposure changed plant-community composition and reduced species-richness and diversity measures.
| Study authors | Biological Conservation | 2017
Examines multiple proposed drivers of monarch decline and identifies relationships with habitat loss, glyphosate-associated milkweed decline, climate, and neonicotinoids.
| Review authors | Environmental Sciences Europe | 2017
Reviews biodiversity implications of herbicide-resistant cropping systems, including intensive herbicide use, resistant weeds, reduced wild-plant diversity, and effects on farmland animals.
| Review authors | Insect Science | 2016
Connects monarch decline with landscape-scale changes accompanying herbicide-resistant crops and the loss of milkweed from agricultural fields.
| Study authors | Environmental Toxicology and Chemistry | 2014
Compares herbicide sensitivity of rare and common plants to test whether herbicide exposure helps explain patterns of plant diversity in agricultural landscapes.
| Carsten A. Brühl et al. | Integrated Environmental Assessment and Management | 2011
Argues conventional herbicide phytotoxicity testing inadequately represents wild-plant diversity, reproductive effects, ecological communities, and ecosystem services.
Pesticide Reduction, Diversification, and Ecological Pest Control
| Yaoyun Zhang et al. | Communications Earth & Environment | 2025-06-13
Analysis of more than 1,200 commercial cropping systems finds carefully designed crop diversification can contribute to reductions in pesticide use.
| Robert Finger and Niklas Möhring | Nature Plants | 2024-03-14
Describes emerging pesticide-free crop-production systems in Europe as an intermediate approach between conventional and certified-organic agriculture.
| Study authors | Nature Communications | 2024
Shows landscape features that support natural pest-control organisms can reduce productivity losses when synthetic pesticide use is lowered.
| Study authors | Scientific Reports | 2024
Long-term comparison finds organic systems using dramatically fewer pesticides support greater in-field biodiversity and soil biological quality while retaining substantial crop yields.
| Review authors | Agronomy for Sustainable Development | 2024
Reviews ecological redesign of cropping systems to strengthen natural pest regulation and reduce dependence on chemical pesticides.
| Study authors | Nature Communications | 2023
Analysis of more than 14,000 crop observations finds temporal crop diversification can reduce pesticide use for several major crops.
| Study authors | Science of the Total Environment | 2021
Explores landscape-scale crop diversity as a strategy for strengthening biological control, suppressing pests, and lowering pesticide demand.
