, Volume 65, Issue 2, pp 95–98

Species richness and distortion in reciprocal averaging and detrended correspondence analysis

  • T. C. D. Dargie


Gradients in beta diversity and species richness cause different forms of distortion in reciprocal averaging ordinations. Detrended correspondence analysis largely removes the beta diversity effect and reduces, but does not eliminate, the influence of species richness.


Detrended correspondence analysis Reciprocal averaging Species diversity Vegetation models 


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  1. Austin, M. P. & Noy-Meir, I., 1972. The problem of non-linearity in ordination: experiments with two-gradient models. J. Ecol. 59: 763–774.Google Scholar
  2. Dargie, T. C. D., 1979. A numerical analysis of semi-arid vegetation in S.E. Spain. Ph.D. Thesis, University of Sheffield.Google Scholar
  3. Dargie, T. C. D., 1984. On the integrated interpretation of indirect site ordinations: a case study using semi-arid vegetation in southeastern Spain. Vegetatio 55: 37–55.Google Scholar
  4. Gauch, H. G.Jr., Whittaker, R. H. & Wentworth, T. R., 1977. A comparative study of reciprocal averaging and other ordination techniques. J. Ecol. 65: 157–174.Google Scholar
  5. Hill, M. O., 1973. Reciprocal averaging: an eigenvector method of ordination. J. Ecol. 61: 237–251.Google Scholar
  6. Hill, M. O., 1974. Correspondence analysis: a neglected multivariate technique. Appl. Statist. 23: 340–354.Google Scholar
  7. Hill, M. O., 1979. DECORANA — a FORTRAN program for detrended correspondence analysis and reciprocal averaging. Ecology and Systematics, Cornell University, Ithaca, New York 14850. 52 pp.Google Scholar
  8. Hill, M. O. & Gauch, H. G.Jr., 1980. Detrended correspondence analysis: an improved ordination technique. Vegetatio 42: 47–58.Google Scholar
  9. Peet, R. K., Glenn-Lewin, D. G. & Wolf, J. W., 1983. Prediction of man's impact on plant species diversity: a challenge for vegetation science. In: W., Holzner, M. J. A., Werger & I., Ikusima (eds), Man's Impact on Vegetation, pp. 41–54. Junk, The Hague.Google Scholar
  10. Swan, J. M. A., 1970. An examination of some ordination problems by use of simulated vegetational data. Ecology 51: 89–102.Google Scholar

Copyright information

© Dr W. Junk Publishers 1986

Authors and Affiliations

  • T. C. D. Dargie
    • 1
  1. 1.Department of GeographyThe UniversitySheffieldUnited Kingdom

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