Open AccessVisualizing environmental correlates of species geographical range limits
Author(s) -
Bauer John T.,
Peterson A. Townsend
Publication year - 2005
Publication title -
diversity and distributions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.918
H-Index - 118
eISSN - 1472-4642
pISSN - 1366-9516
DOI - 10.1111/j.1366-9516.2005.00173.x
Subject(s) - range (aeronautics) , geography , univariate , ecology , environmental niche modelling , species distribution , boundary (topology) , cartography , computer science , multivariate statistics , biology , machine learning , mathematics , mathematical analysis , ecological niche , habitat , materials science , composite material
Although many studies have treated aspects of species geographical distributions and numerous approaches exist for understanding overall ecological correlates of distributions, software tools for exploring environmental correlates of distributional limits are relatively few. We focused on the challenge of understanding spatial correlates of distributional limits, and developed an extension to arcview that provides a simple, univariate test and visualization for such explorations. The ‘Boundary U‐ test’ seeks out environmental variables that show steep gradients associated with user‐defined boundaries across geography. We illustrate the tool and its applications with an example of the likely historical distribution of Mexican wolf ( Canis lupus ).