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Relationship between the intensity of agricultural land use near ponds and a population's sensitivity to pesticides. Results are presented for (A, C) chlorpyrifos and (B, D) Roundup Original MAX ®. Markers represent population means. Proportion of land used for agriculture was calculated within a 500‐m radius of each pond. The fitted line for panel (A) was significant (P = 0.026), whereas the fitted line for panel (C) was marginally nonsignificant (P = 0.075).
