Repeated-measures ANOVA was used to examine influences of
the experimental design on P. parvum cell densities, chl-a levels,
and zooplankton biomass
One-way ANOVA was used
to examine D. magna reproduction responses to the treatment
levels, because sublethal D. magna bioassays were only performed
at T21 for both experiments
LC50 (% of ambient sample)
values were estimated for P. promelas 48 h acute toxicity bioassays
using Probit or Trimmed Spearman Karber statistical programs, as
appropriate
One-way ANOVA with Tukey HSD post
hoc tests was used to examine influences of pH adjustment during
the TIE study on LC50 values of samples modified to pH 7 or 8.5
from ambient pH