Tort: Desert tortoise matrix

In popdemo: Demographic Modelling Using Projection Matrices

Description

Matrix Projection Model for the desert tortoise Gopherus agassizii with medium fecundity. The matrix is based on a population in the Western Mojave desert. Stages are based on age and size (carapace length in mm):
Stage 1: Yearling (age 0-1)
Stage 2: Juvenile 1 (<60 mm)
Stage 3: Juvenile 2 (90-99mm)
Stage 4: Immature 1 (100-139mm)
Stage 5: Immature 2 (140-179mm)
Stage 6: Subadult (180-207mm)
Stage 7: Adult 1 (208-239mm)
Stage 8: Adult 2 (>240mm).

Usage

data(Tort)

Format

Object of class matrix

References

• Doak et al. (1994) Ecol. Appl., 4, 446-460.

Examples

  # read in data and view
  data(Tort)
  Tort

popdemo documentation built on Nov. 16, 2021, 5:06 p.m.