dlogistic {primer} | R Documentation |
Lotka-Volterra single species discrete population growth.
dlogistic(alpha = 0.01, rd = 1, N0 = 2, t = 15)
alpha |
per capita negative density dependence (a positive value will result in the usual negative effect) |
rd |
discrete growth increment |
N0 |
initial population size |
t |
end time point |
Of the form,
N[t+1] = N[t] + r[d] N[t] (1 - alpha N[t])
Returns a vector of population sizes from N[0] to N[t], for integer time points.
Hank Stevens (HStevens@muohio.edu)
Stevens. M.H.H. 2009. A Primer of Ecology with R. Use R! Series. Springer.
time <- 20 Ns <- dlogistic(t=20) plot(0:time, Ns)