Trajectories derived using age-from-stage methods. Some MPMs are parameterized with a stasis loop at the maximum stageĬlass, which can lead to apparent plateaus in mortality or fertility
Shape_rep( lx) # shape of fecundity trajectory #> 0.3097147 Life tables and the quasi-stationary distribution Shape_surv( lx) # shape of survival/mortality trajectory #> -0.04681254 # first derive age-trajectories of survivorship (lx) and fecundity (mx) lx 0.9077186Įntropy_d( lx, mx) # Demetrius' entropy #> 2.062862
Start = 2 to set our starting stage class of interest to the ‘small’ In mpm1 is a ‘seed’ stage, which we might considerįunctionally-distinct from the ‘above-ground’ stages, we’ll specify Of life’ for the purposes of calculation. Which is used to specify the stage class that represents the ‘beginning One of the most common arguments among functions in Rage is start, The object mpm1 is a list containing two elements: the growth/survivalĬomponent of the MPM (the U matrix), and the sexual reproductionĬomponent (the F matrix).
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