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. 2014 Jan 17;9(1):e86357. doi: 10.1371/journal.pone.0086357

Table 2. Statistical output table for response variables having significant relationships with the agricultural land use type.

Response Variable Effect size Standard error p- value
Total bee visitation 0.813 0.22 0.0002
Honey bees 1.26 0.33 0.0002
Shield-tipped small dark bees 1.83 0.78 0.02
Medium striped hairy belly bees 1.53 0.62 0.01
Morphotype Shannon diversity −0.488 0.193 0.009
Morphotype evenness −0.264 0.086 0.002

Bee morphotype visitation data and calculated community metrics were collected in East Contra Costa County, California. Significant relationships with the agricultural land use type were calculated based on generalized linear mixed models with land use type, bloom category of flowering patch, observation time period, wind, and temperature as fixed effects and site as a random effect. The natural land use type and morning (AM) observation time period were the model baselines for the categorical variables of land use type and observation time. Shannon diversity and evenness were fit with Gaussian distributions while all other variables were fit with Poisson distributions.