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. 2020 Apr 17;8:e8957. doi: 10.7717/peerj.8957

Figure 2. Accumulation species curves.

Figure 2

Observed species vs estimated species (A, C, E, G, I, K) and Shannon diversity index values (H′) (B, D, F, H, J, L), obtained from the Bootstrap estimator. A Chi-square goodness-of-fit test was used to compare the observed richness against estimated richness (X2, p = 0.05, 95% confidence). The Spearman correlation coefficent (rs) (p = 0.05, 95% confidence) was used to correlate the sampling effort (area in m2) and Shannon diversity index values (H′). The grey horizontal line represents the total number of species observed in each site.