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. Author manuscript; available in PMC: 2016 Aug 4.
Published in final edited form as: Nature. 2016 Feb 4;530(7588):85–88. doi: 10.1038/nature16532

Figure 3. Seasonal nectar productivity in Great Britain, based on 2007 land cover and vegetation data.

Figure 3

Maps of nectar productivity in kg of sugars/ha from March to October (panels a to h). Hot colours correspond to high nectar productivity while cold colours correspond to low nectar productivity (see colours scale). Note that urban areas are assigned with nectar productivity values equal to zero, hence the blue colours in cities. Nectar productivity values for mapping correspond to back-transformed estimates of the linear mixed model fitted on log10 (x+1) nectar productivity of 2007 Countryside Survey non-linear plots with habitat, month and their interaction as fixed effects and plots nested within squares as random effects.