The ecodist package for dissimilarity-based analysis of ecological data

Journal Article (Journal Article)

Ecologists are concerned with the relationships between species composition and environmental factors, and with spatial structure within those relationships. A dissimilarity-based framework incorporating space explicitly is an extremely flexible tool for answering these questions. The R package ecodist brings together methods for working with dissimilarities, including some not available in other R packages. We present some of the features of ecodist, particularly simple and partial Mantel tests, and make recommendations for their effective use. Although the partial Mantel test is often used to account for the effects of space, the assumption of linearity greatly reduces its effectiveness for complex spatial patterns. We introduce a modification of the Mantel correlogram designed to overcome this restriction and allow consideration of complex nonlinear structures. This extension of the method allows the use of partial multivariate correlograms and tests of relationship between variables at different spatial scales. Some of the possibilities are demonstrated using both artificial data and data from an ongoing study of plant community composition in grazinglands of the northeastern United States.

Full Text

Duke Authors

Cited Authors

  • Goslee, SC; Urban, DL

Published Date

  • January 1, 2007

Published In

Volume / Issue

  • 22 / 7

Start / End Page

  • 1 - 19

Electronic International Standard Serial Number (EISSN)

  • 1548-7660

International Standard Serial Number (ISSN)

  • 1548-7660

Digital Object Identifier (DOI)

  • 10.18637/jss.v022.i07

Citation Source

  • Scopus