tortoise {popbio} | R Documentation |
Projection matrices for the desert tortoise Gopherus agassizii
data(tortoise)
A list of 4 projeciton matrices with 4 different fertility estimates (low, medium low, medium high, and high)
Table 5 in Doak et al (1994). Used by Caswell (2001) in chapter 9 on sensitivity analysis.
Caswell, H. 2001. Matrix population models: construction, analysis, and interpretation, Second edition. Sinauer, Sunderland, Massachusetts, USA.
Doak, D., P. Kareiva, and B. Kleptetka. 1994. Modeling population viability for the desert tortoise in the Western Mojave Desert. Ecological Applications 4:446-460.
data(tortoise) A<-tortoise[["med.high"]] # log color scale not needed image2(A, mar=c(1,3.5, 5,1), log=FALSE, box.off=.1) title("Tortoise projection matrix", line=3) splitA(A) lambda(A) sapply(tortoise, lambda)