Performance of four ordination techniques assuming three different non-linear species response models |
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Authors: | M. P. Austin |
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Affiliation: | (1) Division of Land Use Research, CSIRO, Canberra, Austrialia |
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Abstract: | Summary The performances of four ordination techniques (reciprocal averaging, parametric mapping, gaussian ordination and non-metric multidimensional scaling) are evaluated using artificial data based on three vegetation models: the gaussian response curve, -function curves, and an ecological response model. No technique performs well with the artificial data not based on a gaussian model. Non-metric multidimensional scaling seemed marginally better than other techniques. Some of the implications of this failure are discussed. |
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Keywords: | Gaussian ordination Indirect ordination Non-linearity Nonmetric multidimensional scaling Ordination Parametric mapping Reciprocal averaging Vegetation models |
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