Teasel: Population dynamics model transition matrix of teasel

In diagram: Functions for Visualising Simple Graphs (Networks), Plotting Flow Diagrams

Description

Transition matrix of the population dynamics model of teasel (Dipsacus sylvestris), a European perennial weed, as discussed in Caswell (2001), and in Soetaert and Herman, (2009)

The life cycle of teasel can be described by six stages:

• dormant seeds < 1yr (DS 1yr)

• dormant seeds 1-2yr (DS 2yr)

• small rosettes <2.5cm (R small)

• medium rosettes 2.5-18.9 cm (R medium)

• large rosettes >19 cm (R large)

• flowering plants (F)

The matrix contains the transition probabilities from one compartment (column) to another (row).

Usage

Teasel

Format

matrix with transition probabilities, where element ij denotes transition from compartment j to i

rownames and columnames are the component names

Author(s)

Karline Soetaert <[e-mail]>

References

Caswell, H. 2001. Matrix population models: construction, analysis, and interpretation. Second edition. Sinauer, Sunderland, Mass.

Karline Soetaert and Peter Herman. 2009. A practical guide to ecological modelling. Using R as a simulation platform. Springer.

See Also

Rigaweb, Takapotoweb

Examples

curves <- matrix(nrow = ncol(Teasel), ncol = ncol(Teasel), 0)
curves[3,1] <- curves[1,6] <- -0.35
curves[4,6] <- curves[6,4] <- curves[5,6] <- curves[6,5] <- 0.08
curves[3,6] <- 0.35
  
plotmat(Teasel, pos = c(3, 2, 1), curve = curves, lwd = 1, box.lwd = 2,
        cex.txt = 0.8, box.cex = 0.8, box.size = 0.08, arr.length = 0.5,
        box.type = "circle", box.prop = 1, shadow.size = 0.01,
        self.cex = 0.6, my = -0.075, mx = -0.01, relsize = 0.9,
        self.shifty = 0, self.shiftx = c(0, 0, 0.125, -0.12, 0.125, 0),
        main = "Dispsacus sylvestris")

Example output

Loading required package: shape

diagram documentation built on Oct. 23, 2020, 5:46 p.m.