Survival data set for Daphnia magna exposed to dichromate during 21 days
Survival data set of chronic laboratory toxicity tests with Daphnia magna freshwater invertebrate exposed to six concentrations of one oxidizing agent (potassium dichromate) during 21 days. Six concentrations were tested with one replicate of 50 organisms per concentration. Survival is monitored at 10 time points.
data(dichromate)
A data frame with 60 observations on the following four variables:
replicateA vector of class numeric with the
replicate code (1).
concA vector of
class numeric with dichromate concentrations in mg.L^{-1}.
timeA vector of class integer with the time points
(in days from the beginning of the experiment t = 0).
NsurvA vector of class integer with the number of
alive individuals at each time point for each concentration and each
replicate.
Bedaux, J., Kooijman, SALM (1994) Statistical analysis of toxicity tests, based on hazard modeling, Environmental and Ecological Statistics, 1, 303-314.
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