Parameter estimates of linear mixed effects models for juvenile M. mercenaria, juvenile M. arenaria and juvenile A. islandica proportional change in maximum height.

All models include the random effect of tank. The P value shown is from lmerTest::drop1 applied to the main effects model, which produces F-tests based on Satterthwaite’s method which is equivalent to the summary t-tests using Satterthwaite’s method. To make model intercepts interpretable, average pH values were normalized to the lowest measurement (ex. the most acidic value was 0).