Lonsdorf_etal_2023_ObservedPredicted_exposure

These data include observed pesticide residues in pollens gathered by bumble bees (<i>Bombus </i><i>vosnesenskii</i>) returning to colonies across 14 spatially independent landscapes in Northern California. These data were used to evaluate a spatially explicit model of landscape exposure that was parameterized with 6 different specifications with regards to floral resources, pesticide accumulation, and foraging behavior. The associated paper has been been published as an article in <i>Science of the Total Environment</i>. The columns are:FID - Field Identifier for the 14 sites used in this analysisYear - This study took place in 2017Round - Collection rounds for pollen samples. Pollen loads from the two colonies at a site and for two consecutive sample rounds were pooled (from 10- and 20-days past field placement, 30- and 40-days, etc.)Compound - Name of pesticide detectedPesticide_type - either fungicide, herbicide, or insecticideModelNumber - Different exposure model specifications . See Methods and Table 1 in Lonsdorf et al. 2023 <i>Sci. Tot. Env.</i>ModelSpecifications - shorthand abbreviations of different specifications . See Methods and Table 1 in Lonsdorf et al. 2023 <i>Sci. Tot. Env.</i>Modeled_exposure - predicted exposure value for a given combination of site, round, compound, and specification.Concentration_ng_mg - observed pesticide residue (ng/mg) for a given a given combination of site, round, and compound.Citing information:Lonsdorf, E. V., Nicholson, C. C., Rundlöf, M., &amp; Williams, N. M. (2023). A spatially explicit model of landscape pesticide exposure to bees: development, exploration, and evaluation. <i>Science of the Total Environment</i> doi: TBD.