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Fig. 2 | Environmental Evidence

Fig. 2

From: How does roadside vegetation management affect the diversity of vascular plants and invertebrates? A systematic review

Fig. 2

Mean effect ratios of mowing regimes on plant species richness and species diversity. Means and 95% CI are indicated by squares and lines, respectively. Diversity is measured as Shannon index (H’), and all data are based on unweighted t tests. Left columns specify mowing frequency (1–3 per year), hay removal (Y/N) and timing of mowing (E = early, L = late, S = several). Data are divided into effects of mowing vs. no mowing (black squares), frequency of mowing (blue), timing of mowing (green) and hay removal (red), with overall comparisons (averaging across other elements of the mowing regime) in grey rows. Number of datasets used to calculate each mean effect ratio is given in brackets. Statistical significance (p < 0.05) indicated by a * next to the number of studies

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