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Increasing the value of principal components analysis for simplifying ecological data: a case study with rivers and river birds |
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| Authors: | I. P. VAUGHAN S. J. ORMEROD |
| Affiliation: | Catchment Research Group, Cardiff School of Biosciences, Main Building, Cardiff University, Cardiff CF10 3TL, UK |
| Abstract: | |
| Keywords: | habitat data multicollinearity ordinal variables PCA qualitative data river habitat survey variable clustering |