Niche Region and Niche Overlap Metrics for Multidimensional Ecological Niches R package nicheROVER version 1.1.2 Implementation of a probabilistic method to calculate 'nicheROVER' (_niche_ _r_egion and niche _over_lap) metrics using multidimensional niche indicator data (e.g., stable isotopes, environmental variables, etc.). The niche region is defined as the joint probability density function of the multidimensional niche indicators at a user-defined probability alpha (e.g., 95%). Uncertainty is accounted for in a Bayesian framework, and the method can be extended to three or more indicator dimensions. It provides directional estimates of niche overlap, accounts for species-specific distributions in multivariate niche space, and produces unique and consistent bivariate projections of the multivariate niche region. The article by Swanson et al. (2015) <doi:10.1890/14-0235.1> provides a detailed description of the methodology. See the package vignette for a worked example using fish stable isotope data. Software Depends: R (>= 1.9.0) Imports: graphics, stats, utils Suggests: knitr, rmarkdown Martin Lysy <mlysy@uwaterloo.ca> Comprehensive R Archive Network (CRAN) Martin Lysy [aut, cre], Ashley D. Stasko [aut], Heidi K. Swanson [aut] GPL-3 2023-10-13 application/tgz https://CRAN.R-project.org/package=nicheROVER doi:10.32614/CRAN.package.nicheROVER