This file describes the variables in each of the datasets that accompany: MacInnis G, Normandin E, Ziter C.D. 2022. Decline in wild bee species richness associated with honey bee (Apis mellifera L.) abundance in an urban ecosystem dataset: File 1_Species_Matrix_2020_2013.csv Site: Abbreviated site lables. A "13" ending indicates the species was found at the indicated site in 2013, and a "20" ending indicates the species was found at at the indicated site in 2020. Each column lists the abbreviated species name and the number indicate the abundance of each species caught. dataset: File 2_TotalSpecies_data2020 Site: Name of the Site Lab: Abbreviated site name Samp_period The sampling period in which the bees were collected (1-5) Samp_period_dat The actual sampling dates FRich Floral richness (number of flowering plant species) measured at each site. NA indicates a measurement was not taken FDens Average floral cover as a percentage of flowering plants in each plot Imperv Percent of impervious surface measured at 500 m buffers around each site Imperv1500 Percent of impervious surface measured at 1500 m buffers around each site Herb_lt3 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site Herb1500 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site GreenT The greenspace type: Park = Nature park, CEM = Cemetery, GARD = Community garden HBCat Honey bee abundance categories used for categorizing high, medum and low honey bee abundance sites for ordination. Low honey bee sites (LHB) sites were those with 0 to 20 honey bee individuals detected in sampling periods; Medium honey bee sites (MHB) were those with 20 to 40 honey bee individuals detected in sampling periods; High honey bee (HHB) were those with > 40 honey bee individuals detected in sampling periods HB Number of honey bees detected during sampling periods Wild_Indiv Number of wild bee individuals at each site and sampling period Species Number of wild bee species at each site and sampling period SppRarefied Rarefied species richness at each site and sampling period Bombind Number of Bombus individuals at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) BombSpp Number of Bombus species at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) LgInd Number of Large bee individuals at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) LgSpp Number of Large bee species at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) SmInd Number of Small bee individuals at each site and sampling period (small bees were categorized as those with ITS < 2.25 mm) SmSppRare Rareified number of small bee species at each site and sampling period ExoticSpp Number of exotic bee species at each site and sampling period NativeSpp Number of native bee species at each site and sampling period ExoticInd Number of exotic bee individuals at each site and sampling period Native Ind Number of native bee individuals at each site and sampling period Shannon The Shannon diversity index at each site and sampling period Simp The Simpson's diversity index at each site and sampling period Pielou Pielou's J at each site and sampling period dataset: File 3_TotalSpecies_data2020 Site: Name of the Site Lab: Abbreviated site name Year: The year of bee sampling; 2020 or 2013. Samp_period The sampling period in which the bees were collected (1-5) Samp_period_dat The actual sampling dates FRich Floral richness (number of flowering plant species) measured at each site. NA indicates a measurement was not taken FDens Average floral cover as a percentage of flowering plants in each plot Imperv Percent of impervious surface measured at 500 m buffers around each site Imperv1500 Percent of impervious surface measured at 1500 m buffers around each site Herb_lt3 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site Herb1500 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site HBDif The difference in the number of honey bees detected in 2020 versus 2013. HB Number of honey bees detected during sampling periods Wild_Indiv Number of wild bee individuals at each site and sampling period Species Number of wild bee species at each site and sampling period SppRarefied Rarefied species richness at each site and sampling period Bombind Number of Bombus individuals at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) BombSpp Number of Bombus species at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) LgInd Number of Large bee individuals at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) LgSpp Number of Large bee species at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) SmInd Number of Small bee individuals at each site and sampling period (small bees were categorized as those with ITS < 2.25 mm) SmSppRare Rareified number of small bee species at each site and sampling period ExoticSpp Number of exotic bee species at each site and sampling period NativeSpp Number of native bee species at each site and sampling period ExoticInd Number of exotic bee individuals at each site and sampling period Native Ind Number of native bee individuals at each site and sampling period Shannon The Shannon diversity index at each site and sampling period Simp The Simpson's diversity index at each site and sampling period Pielou Pielou's J at each site and sampling period dataset: File 3_Speciesdata_2013_2020 Site: Name of the Site Lab: Abbreviated site name Samp_period The sampling period in which the bees were collected (1-5) Samp_period_dat The actual sampling dates FRich Floral richness (number of flowering plant species) measured at each site. NA indicates a measurement was not taken. The "2013" floral measurements are actually from 2016. FDens Average floral cover as a percentage of flowering plants in each plot. The "2013" floral measurements are actually from 2016. Imperv Percent of impervious surface measured at 500 m buffers around each site Imperv1500 Percent of impervious surface measured at 1500 m buffers around each site Herb_lt3 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site Herb1500 Percent of herbaceous greenery (greenery less than 3m height) at 500 m buffers around each site GreenT The greenspace type: Park = Nature park, CEM = Cemetery, GARD = Community garden HBCat Honey bee abundance categories used for categorizing high, medum and low honey bee abundance sites for ordination. Low honey bee sites (LHB) sites were those with 0 to 20 honey bee individuals detected in sampling periods; Medium honey bee sites (MHB) were those with 20 to 40 honey bee individuals detected in sampling periods; High honey bee (HHB) were those with > 40 honey bee individuals detected in sampling periods HB Number of honey bees detected during sampling periods Wild_Indiv Number of wild bee individuals at each site and sampling period Species Number of wild bee species at each site and sampling period SppRarefied Rarefied species richness at each site and sampling period Bombind Number of Bombus individuals at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) BombSpp Number of Bombus species at each site and sampling period (only bees in the "very large" body size group; ITS >5mm) LgInd Number of Large bee individuals at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) LgSpp Number of Large bee species at each site and sampling period (large bees were categorized as those with ITS = 2.25 mm) SmInd Number of Small bee individuals at each site and sampling period (small bees were categorized as those with ITS < 2.25 mm) SmSppRare Rareified number of small bee species at each site and sampling period ExoticSpp Number of exotic bee species at each site and sampling period NativeSpp Number of native bee species at each site and sampling period ExoticInd Number of exotic bee individuals at each site and sampling period Native Ind Number of native bee individuals at each site and sampling period Shannon The Shannon diversity index at each site and sampling period Simp The Simpson's diversity index at each site and sampling period Pielou Pielou's J at each site and sampling period