unmarked is an R package for analyzing ecological data arising from several popular sampling techniques. The sampling methods include point counts, occurrence sampling, distance sampling, removal, double observer, and many others. unmarked uses hierarchical models to incorporate covariates of the latent abundance (or occupancy) and imperfect detection processes.
The latest stable version of unmarked can be downloaded from CRAN:
install.packages("unmarked")The latest development version can be installed from Github:
install.packages("remotes")
remotes::install_github("biodiverse/unmarked")Support is provided through the unmarked Google group. The package website has more information. You can report bugs here, by posting to the Google group, or by emailing the current maintainer.
See the following vignettes for an introduction to unmarked and some example analyses: