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. .
nematodeA matrix listing densities from 3 stage classes over 6 time periods
Caswell, H. 2001. Matrix population models. Construction, Analysis and interpretation. 2nd ed. Sinauer, Sunderland, Massachusetts.
QPmat
nematode
stage.vector.plot(nematode,
prop = FALSE, log = "y", ylim = c(.3, 200),
xlab = "Time", ylab = "Nematode density"
)
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