, Volume 33, Issue 1, pp 33–41 | Cite as

On non-linear species response models in ordination

  • M. P. Austin


Ordination techniques are plagued by the non-linearity of vegetation data. The purpose of ordination is discussed and considered to be the process of arranging samples (or species) in relation to one or more environmental gradients or abstract axes that may represent such gradients, the arrangement to be ecologically significant. The appropriateness of various models of vegetation to current ordination techniques is considered, particularly the gaussian species response curve. Two alternatives are suggested based on β-functions and an ecological response curve model incorporating competition between species.


Ecological response curves Environmental gradient Gaussian ordination Indirect ordination Non-linearity Ordination Vegetation models 


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Copyright information

© Dr. W. Junk B.V. Publishers 1976

Authors and Affiliations

  • M. P. Austin
    • 1
  1. 1.Division of Land Use ResearchCSIROCanberraAustralia

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