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Fig. 6. Mortality of earthworms after UV-B exposure. (A) M. posthuma shows
significant mortality after exposure to UV-B (1000 or 1500 J m-2;
two-way ANOVA, N=20, P<0.01), the effect being
dose-dependent. (B) A. gracilis only shows significant mortality
after exposure to UV-B (1500 J m-2; two-way ANOVA, N=20,
P<0.01). In addition, the survival time of A. gracilis
was shorter than that of M. posthuma after UV-B exposure (ANOVA,
P<0.01).