Effect of prey recovery rate and prey floor on salmon population growth rates.

<p>Mean percent change in lambda (on the y-axes) between modeled populations of unexposed ocean-type Chinook salmon and those exposed to a single, 4-day exposure per generation of a carbamate insecticide (e.g., carbaryl). The nine scenarios vary in the prey recovery and prey floor parameters (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0092436#pone-0092436-t003" target="_blank">Table 3</a>). Prey recovery rates were 0.5%, 1% and 5% per day, or slow, intermediate and fast, respectively. Prey floors were 0.05, 0.20 and 0.50, or low, intermediate and high, respectively. The vertical dotted line in each panel marks where the exposure concentration equals the EC₅₀ of the prey (4.33 μg/L for carbaryl).