zinc {morse} | R Documentation |
Reproduction and survival data sets for Daphnia magna exposed to zinc during 21 days
Description
Reproduction and survival data sets of a chronic laboratory toxicity tests with Daphnia magna freshwater invertebrate exposed to four concentrations of zinc during 21 days. Four concentrations were tested with three replicates per concentration. Each replicate contained 20 organisms. Reproduction and survival were monitored at 15 time points.
Usage
data(zinc)
Format
A data frame with 180 observations on the following five variables:
replicate
A vector of class
numeric
with the replicate code (1
to12
).conc
A vector of class
numeric
with zinc concentrations inmg.L^{-1}
.time
A vector of class
integer
with the time points (in days from the beginning of the experimentt = 0
).Nsurv
A vector of class
integer
with the number of alive individuals at each time point for each concentration and each replicate.Nrepro
A vector of class
integer
with the number of offspring at each time point for each concentration and each replicate.
References
Billoir, E.,Delignette-Muller, M.L., Pery, A.R.R. and Charles S. (2008) A Bayesian Approach to Analyzing Ecotoxicological Data, Environmental Science & Technology, 42 (23), 8978-8984.