Niche Region and Niche Overlap Metrics for Multidimensional Ecological Niches

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. (Ecology, 2015) provides a detailed description of the methodology. See the package vignette for a worked example using fish stable isotope data.


Reference manual

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1.1.0 by Martin Lysy, 8 months ago

Browse source code at

Authors: Martin Lysy [aut, cre] , Ashley D. Stasko [aut] , Heidi K. Swanson [aut]

Documentation:   PDF Manual  

GPL-3 license

Imports graphics, stats, utils

Suggests knitr, rmarkdown

See at CRAN