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  4. Pesticide concentrations in bees and other matrices collected from sunflower fields (with and without a neonicotinoid seed treatment) near Sacramento, California

Pesticide concentrations in bees and other matrices collected from sunflower fields (with and without a neonicotinoid seed treatment) near Sacramento, California

Dates

Publication Date
Start Date
2016-05-12
End Date
2016-07-03

Citation

Hladik, M.L., and Ward, L.T., 2022, Pesticide concentrations in bees and other matrices collected from sunflower fields (with and without a neonicotinoid seed treatment) near Sacramento, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9X3SP7F.

Summary

Hybrid sunflower production occurs near Sacramento in Northern California where seed treatments are commonly used. In this study, four locations were sampled in 2016 as matched pairs; half of each field was sown with thiamethoxam treated seed and half without. In addition to the thiamethoxam seed treatment, all seeds were coated with two fungicides, fludioxonil and mefenoxam/metalaxyl. Both wild bee and honey bee pesticide exposure was assessed by analyzing field soil, sunflower pollen and nectar, honey bees (pollen and nectar foraging) and a sunflower specialist wild bee, Melissodes agilis. Samples were extracted via pressurized liquid extraction (except nectar which underwent a room temperature solvent extraction) with an organic [...]

Contacts

Point of Contact :
Michelle L Hladik
Process Contact :
Michelle L Hladik
Originator :
Michelle L Hladik, Laura T. Ward
Metadata Contact :
Michelle L Hladik
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
California Water Science Center

Attached Files

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Sunflower pesticides metadata.xml
“Metadata”
Original FGDC Metadata
View 		54.32 KB application/fgdc+xml
Compounds Analyzed.csv
“Pesticides analyzed” 		8.72 KB text/csv
Soil.csv
“Soil pesticides” 		2.62 KB text/csv
Pollen.csv
“Pollen pesticides” 		1.01 KB text/csv
Nectar.csv
“Nectar pesticides” 		1,009 Bytes text/csv
Bees.csv
“Bee pesticides” 		2.8 KB text/csv
bees on flower.jpg thumbnail 1.73 MB image/jpeg

Purpose

Data were collected to better understand the pesticide exposure of wild bees and honey bees visiting sunflower fields planted with and without a neonicotinoid seed treatment. Soil, pollen, bees (wild bees, Melissodes agilis, and honey bees), and nectar (harvested from honey bee crops) were collected and analyzed for pesticides.
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  • USGS California Water Science Center
  • USGS Data Release Products

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Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9X3SP7F
USGS_keywords https://www.sciencebase.gov/vocab/category/item/identifier Environmental Health

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