Fig. 4From: Organic fertilizer and hydrothermal conditions change the distribution of Medicago sativa L. productivity and soil bacterial diversity in coastal saline soilIndices of bacterial community diversity at the five cutting times. a Shannon index and b Chao estimator. Bars and error bars in a and b indicate the mean and SE (n = 18). Different lower-case letters above bars indicate a significant difference between cutting timesBack to article page