popbio (version 2.4.4)

nematode: Population densities for the sugarbeet cyst nematode

Description

A time-series of population vectors for the sugarbeet cyst nematode Heterodera schachtii. Individuals were classified into three stages (J2, J3+J4, and adult) and densities (per 60 cc of soil) were averaged over four replicates, measured every two days, for 10 days. .

Usage

data(nematode)

Format

A matrix listing densities from 3 stage classes over 6 time periods

References

Caswell, H. 2001. Matrix population models. Construction, Analysis and interpretation. 2nd ed. Sinauer, Sunderland, Massachusetts.

See Also

QPmat

Examples

# NOT RUN {
data(nematode)
stage.vector.plot(nematode, prop=FALSE, log='y', ylim=c(.3,200), 
 xlab="Time", ylab="Nematode density")
# }