Social and Ecological Drivers of the Economic Value of Pollination Services Delivered to Coffee in Central Uganda

Figure 8

Effect of regional land-use intensity gradients on economics of coffee production measures ((a): coffee yield; (b): gross revenue, (c): value of bees = value of pollination services). Different letters above the bars indicate significant differences of means (𝑋 ± SE) between land-use categories at 𝑃≤0.05. 𝑅² = coefficient of the determination of the regression model; SE = standard error; 𝑃 = statistical significance level, (1,28) = value for degrees of freedom (DF); 𝐹 = analysis of variance value of Snedecor test; GLM-ANOVA = general linear model analysis of variance.

(a) [GLM-ANOVA: 𝐹 = 5.13, 𝑃 = 0.03, DF = (2,27)]

(b) [GLM-ANOVA: F = 4.06, 𝑃 = 0.042, DF = (2,27)]

(c) [GLM-ANOVA: F = 5.79, 𝑃 = 0.0017, DF = (2,27)]