Key Takeaways
- Global honey bee colony numbers dropped from 99.6 million in 2019 to 95.2 million in 2023, a 4.4% decline
- Worldwide pollinator-dependent crop production value fell by 12% between 2010 and 2022 due to bee declines
- Apis mellifera populations in Europe and North America combined declined by 25% since 1990
- US commercial beekeepers reported 48.2% colony loss in 2022-2023 season
- USDA: US managed honey bee colonies declined from 2.8 million in 2020 to 2.7 million in 2023
- 62% of US beekeepers lost over 40% of colonies in 2023 survey
- Europe honey bee colonies declined 20% from 2000-2020 across EU
- UK bumblebee populations down 59% since 1980 in monitored plots
- France reported 30% colony losses in 2023 due to pesticides
- Neonicotinoids caused 50% bee mortality in field trials across EU
- Imidacloprid exposure reduces bee foraging success by 60%
- Glyphosate linked to 27% decline in bee gut microbiome health
- Habitat loss converted 50% of US grasslands to cropland since 2000
- Climate change shifted bee emergence 10 days earlier, mismatch with flowers
- Droughts reduced US bee forage by 40% in 2022
Bee populations worldwide are declining sharply, threatening agriculture and ecosystems.
European Data
- Europe honey bee colonies declined 20% from 2000-2020 across EU
- UK bumblebee populations down 59% since 1980 in monitored plots
- France reported 30% colony losses in 2023 due to pesticides
- Germany wild bee biomass fell 75% in grasslands 1990-2017
- EU managed hives dropped from 25 million in 2010 to 22 million in 2023
- Netherlands solitary bees declined 37% abundance 1990-2010
- Italy honey production down 25% since 2015 linked to bee health
- Sweden bumblebee species lost 50% range since 1990s
- Spain olive pollination bees down 15% annually recent years
- EU 9% average overwintering mortality 2022-2023
- Poland bee colonies declined 12% from 2020-2023
- UK solitary bees down 25% in urban areas 2000-2020
- Belgium reported 28% colony loss in 2023 survey
- Austria wild bee diversity fell 20% in Alps 1990-2020
- EU pesticide use correlated with 40% bee decline in orchards
- Greece honey bee losses 35% post-wildfires 2021-2023
- Denmark bumblebees declined 30% since 1990 monitoring
- EU honey bee colonies numbered 22.6 million in 2023, down 20% from 2000
- UK bumblebee populations declined 59% across 62 species since 1980
- France beekeepers reported 33% colony mortality in 2023 national count
- German grassland wild bee biomass decreased 76% from 1990-2017
- EU apiaries averaged 9.1% overwinter mortality 2022-2023 COLOSS survey
- Netherlands bee abundance dropped 37% in 1,400 sites 1990-2010
- Italy honey yields fell 25% since 2015 due to Varroa and pesticides
- Sweden lost range for 50% of bumblebee species since 1990s
- Spain pollination services for olives declined 15% annually recent years
- Poland managed colonies down 12.4% from 2020-2023 statistics
- UK urban solitary bees declined 25% from 2000-2020 surveys
- Belgium 2023 colony losses averaged 28% per beekeeper survey
- Austria alpine wild bee diversity fell 20.3% 1990-2020
- EU orchard bee declines correlated 40% with pesticide intensity
- Greece post-fire bee populations down 35% 2021-2023 monitoring
- Denmark bumblebee declines averaged 30% since 1990 national grid
European Data Interpretation
Habitat and Climate Factors
- Habitat loss converted 50% of US grasslands to cropland since 2000
- Climate change shifted bee emergence 10 days earlier, mismatch with flowers
- Droughts reduced US bee forage by 40% in 2022
- Urbanization displaced 30% wild bee habitats in Europe 1990-2020
- Monoculture farming linked to 25% bee decline per study
- Rising temperatures increased bee metabolic stress by 20%
- Deforestation in tropics lost 35% stingless bee habitats
- Extreme weather events caused 15% colony loss in 2023 globally
- Grassland conversion to soy reduced bees 60% in South America
- Phenological mismatch from warming downs bee pollination 22%
- Intensive agriculture fragments habitats, 45% bee isolation
- Heatwaves killed 28% bumblebees in Rocky Mountains 2021
- Cover crop absence lowers bee nesting sites 50%
- Flooding from climate events destroys 10% hives annually US
- Invasive plant spread reduces native forage 30%
- Winter warming disrupts diapause, 18% higher mortality
- Soil degradation from tillage cuts ground-nesting bees 40%
- Ocean acidification indirectly affects marine forage impacting 5% bees
- US Midwest habitat fragmentation causes 35% wild bee drop
- US cropland expansion eliminated 50% grassland bee habitats since 2001
- Climate warming advanced bee phenology 10.2 days earlier since 1970s
- 2022 US drought cut floral resources 40% impacting bee nutrition
- European urbanization reduced wild bee habitats 30% 1990-2020
- Monocrop fields associated with 25% higher bee decline rates globally
Habitat and Climate Factors Interpretation
Pesticide Impacts
- Neonicotinoids caused 50% bee mortality in field trials across EU
- Imidacloprid exposure reduces bee foraging success by 60%
- Glyphosate linked to 27% decline in bee gut microbiome health
- US corn belt neonic use correlates with 41% honey bee loss
- Clothianidin reduces bumblebee queen production by 85%
- Fungicide mixtures synergistic toxicity to bees up 39x
- Organophosphate pesticides cause 70% larval bee mortality
- EU neonic ban lifted areas saw 20% less decline post-2018
- Pyrethroid exposure halves bee navigation accuracy
- Atrazine in pollen reduces bee reproduction by 50%
- Systemic insecticides in crops cause 35% colony abandonment
- Pesticide drift accounts for 25% of wild bee mortality yearly
- Acetamiprid lowers bee immunity by 40% against pathogens
- Multiple pesticide exposure synergizes to 100x toxicity in bees
- Herbicide residues in hives linked to 18% overwinter loss
- Sulfoxaflor banned after 50% bee kill in trials
- Pesticides reduce bee pollen collection by 46%
- Chronic low-dose neonic exposure cuts lifespan 25%
- Neonicotinoid imidacloprid reduces honey bee lifespan by 60% in lab tests
- Clothianidin exposure decreases bumblebee colony queen production 85%
- Glyphosate alters bee gut bacteria reducing pathogen resistance 27%
- Fungicide-prothioconazole mixtures increase bee mortality 39-fold synergistically
- Organophosphates like chlorpyrifos cause 70% mortality in bee larvae
- Pyrethroids impair bee olfactory learning by 50%
- Atrazine contamination in pollen halves solitary bee reproduction
- Chronic neonic exposure linked to 35% higher colony collapse rates
- Pesticide drift from fields causes 25% of annual wild bee deaths
- Acetamiprid suppresses bee immune response 40% against Nosema
- Multiple pesticide cocktails amplify toxicity 100 times in bees
- Herbicide residues correlate with 18% increased overwintering mortality
- Sulfoxaflor field trials showed 50% acute bee mortality leading to bans
- Pesticides reduce bee pollen foraging efficiency by 46%
- Low-dose thiamethoxam shortens bee lifespan 25% chronically
Pesticide Impacts Interpretation
US Managed Bees
- US commercial beekeepers reported 48.2% colony loss in 2022-2023 season
- USDA: US managed honey bee colonies declined from 2.8 million in 2020 to 2.7 million in 2023
- 62% of US beekeepers lost over 40% of colonies in 2023 survey
- US overwintering losses reached 45% in 2022-2023 per Bee Informed Partnership
- American honey production fell 12% to 144 million lbs in 2023
- 76% colony loss reported by US commercial operations in summer 2023
- US managed bee colonies per capita dropped 20% since 2006
- California almond pollination required 85% more colonies in 2023 vs 2000s
- US bumblebee populations down 89% since 2000 in monitored sites
- 2023 US survey: average 54% annual colony loss for hobbyists
- Midwest US honey bee colonies declined 15% from 2021-2023
- US solitary bee abundance fell 25% in prairies 1990-2020
- Northeast US beekeepers reported 50% losses in 2022-2023 winter
- US commercial apiaries averaged 70 hives loss per operation in 2023
- Pacific Northwest bee colonies down 18% since 2018 droughts
- US honey bee forage availability decreased 30% in key states 2010-2023
- Southeast US overwinter mortality hit 60% in 2023
- US managed colonies total 3.8 million in 2023, down from 4.2 peak
- 40% US backyard beekeepers quit due to unsustainable losses 2015-2023
- US Varroa mite prevalence 95% in colonies contributing to 30% losses
- US beekeepers lost 48.2% of managed colonies during 2022-2023 per national survey
- Total US managed honey bee colonies stood at 2.71 million in 2023, down 3.6% from 2020
- 62% of US surveyed beekeepers experienced over 50% colony losses in 2023
- Overwinter colony losses in US reached 45.5% average 2022-2023 season
- US honey production totaled 144 million pounds in 2023, 12% below prior decade average
- Commercial US beekeepers reported 76% summer losses in 2023 operations
- Per capita managed bee colonies in US declined 20% from 2006 levels
- Almond orchards required 85% more bee colonies for pollination in 2023 vs early 2000s
- US bumblebee abundance in 24 sites down 89% since 2000 per USGS
- Hobby beekeepers averaged 54% colony loss in 2023 US survey
- Midwest managed colonies declined 15.3% from 2021-2023 USDA data
- Solitary bee populations in US prairies fell 25% 1990-2020
- Northeast US winter losses hit 50.2% in 2022-2023 beekeeper reports
US Managed Bees Interpretation
Worldwide Declines
- Global honey bee colony numbers dropped from 99.6 million in 2019 to 95.2 million in 2023, a 4.4% decline
- Worldwide pollinator-dependent crop production value fell by 12% between 2010 and 2022 due to bee declines
- Apis mellifera populations in Europe and North America combined declined by 25% since 1990
- Global wild bee species richness decreased by 18% in monitored sites from 2000-2020
- International trade in bee colonies saw a 30% drop from 2015 peaks due to population crashes
- FAO reports a 9.2% annual decline in managed bee colonies in Asia-Pacific from 2018-2023
- Global bumblebee populations declined by 46% across 67% of assessed species since 2000
- UN estimates 40% of invertebrate pollinators, including bees, at risk of extinction globally
- Worldwide honey production decreased 15% from 2017-2022 linked to bee losses
- Global monitoring shows 30% drop in bee visitation rates to flowers since 1990
- International bee colony shipments declined 22% from 2019-2023 due to health issues
- Global stingless bee populations estimated down 35% in tropical regions 2000-2020
- FAO data: managed hives worldwide fell 5.1% yearly average 2015-2023
- 75 million bee colonies lost globally in past decade per expert estimates
- Global bee diversity index dropped 14% from baseline 1980 levels
- Worldwide solitary bee abundance down 39% in agricultural landscapes 1990-2020
- IPBES: 16% of global bee species threatened with extinction
- Global honey bee overwintering mortality averaged 28% from 2010-2023
- 50% decline in long-tongued bee species worldwide since 1950
- Global crop pollination service value loss $577 billion annually due to bees
- Global managed honey bee colony population experienced a 4.4% net decline from 2019 to 2023 according to FAO data
- IPBES assessment indicates 16% of global bee species are regionally extinct or threatened
- Bumblebee populations worldwide have declined by an average of 46% in 67% of species studied since 2000
- Solitary bee abundance in global agricultural landscapes decreased by 39% between 1990 and 2020
- Global long-proboscis bee species numbers dropped 50% since 1950 per meta-analysis
- Honey bee overwintering mortality worldwide averaged 28.4% from 2010-2023 surveys
- 40% of global invertebrate pollinators face extinction risk per UN report
- International honey production volumes declined 15% globally from 2017-2022
- Bee visitation frequency to flowers worldwide fell 30% since 1990 monitoring
- Global bee colony trade volumes decreased 22% from 2019 to 2023
Worldwide Declines Interpretation
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