BTSPAS
Bayesian Time Stratified Petersen Analysis System
Versions and installation
- Github To install the latest development version from Github, install the newest version of the devtools package; then run
devtools::install_github("cschwarz-stat-sfu-ca/BTSPAS", dependencies = TRUE,
build_vignettes = TRUE)
Features
Provides advanced Bayesian methods to estimate abundance and run-timing from temporally-stratified Petersen mark-recapture experiments as described in Bonner and Schwarz(2011). Methods include hierarchical modelling of the capture probabilities and spline smoothing of the daily run size. This version uses JAGS to sample from the posterior distribution.
This is a more specific application of a stratified Petersen (Darroch, 1961; Plante et al 1988; Schwarz and Taylor, 1998) where, for example, fish are tagged a a fish wheel over a series of weeks, migrate, and then are recaptured. The stratification is temporal rather than geographical. This temporal stratification enable estimation of the run profile and various other parameters of interest such as abundance.