Taxa cumulative applied toxicity.

Results are presented for the one-way, paired t-test (∝ = 0.05), the percent difference of means, and the median absolute percent error (MDAPE) for the maximum applied toxicity (NTI) of individual pesticides relative to the cumulative applied toxicity across California’s HUC8 watersheds for the analysis period. Analyses were performed for four aquatic taxonomic groups by watershed and by site, at monthly and annual time steps. Cumulative applied toxicity was significantly greater than maximum for all taxa, sites, watersheds, and time-steps (a = 0.05, p < 1.0E-16).