Size of a population of great tits (Parus major) from Wytham Wood, near Oxford.
data
Details
Provenance: Global Population Dynamics Database dataset #10163. (NERC Centre for Population Biology, Imperial College (2010) The Global Population Dynamics Database Version 2. https://www.imperial.ac.uk/cpb/gpdd2/). Original source: McCleer and Perrins (1991).
Examples
# takes too long for R CMD check parus |> pfilter(Np=1000,times="year",t0=1960, params=c(K=190,r=2.7,sigma=0.2,theta=0.05,N.0=148), rprocess=discrete_time(function(r, K, sigma, N,...){ e <- rnorm(n=1,mean=0,sd=sigma) c(N = exp(log(N)+r*(1-N/K)+e))}, delta.t=1), rmeasure=function(N, theta,...){ c(pop=rnbinom(n=1,size=1/theta,mu=N+1e-10))}, dmeasure=function(pop, N, theta,..., log){ dnbinom(x=pop,mu=N+1e-10,size=1/theta,log=log)}, partrans=parameter_trans(log=c("sigma","theta","N_0","r","K")), paramnames=c("sigma","theta","N_0","r","K"))-> pf
pf |> logLik() pf |> simulate()|> plot()
References
R. McCleery and C. Perrins. Effects of predation on the numbers of Great Tits, Parus major. In: C.M. Perrins, J.-D. Lebreton, and G.J.M. Hirons (eds.), Bird Population Studies, pp. 129--147, Oxford. Univ. Press, 1991. tools:::Rd_expr_doi("10.1093/oso/9780198577300.003.0006") .
See Also
More data sets provided with pomp: blowflies, bsflu, childhood_disease_data, dacca(), ebola