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. 2007 Oct 17;104(44):17430–17434. doi: 10.1073/pnas.0704350104

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© 2007 by The National Academy of Sciences of the USA

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Fig. 1. — The number of species that occurred in each pond (of 10 possible) for the permanent (black) and drought (gray) ponds. In permanent ponds, the majority of species occurred in <1/2 of the ponds, and no single species occurred in every pond. Of the species observed in at least one of the permanent ponds, each was observed in 3.21 [±1.65 (SD)] of the 10 permanent ponds, whereas of the species observed in at least one of the disturbed ponds, each was observed in 5.26 [±3.1 (SD)] of the 10 drought ponds (ANOVA: F_1,108 = 20.78, P = 0.001).