Scaling methods in assessing environmental quality: A methodological approach to eutrophication
- 1 August 1992
- journal article
- Published by Springer Nature in Environmental Monitoring and Assessment
- Vol. 22 (2) , 123-136
- https://doi.org/10.1007/bf00418011
Abstract
The identification of pollution levels by numerical classification-ordination and the statistical confirmation of the detected trends-were attempted in a eutrophication assessment study. Special emphasis was placed on the importance of data scaling and the selection of a distance coefficient that would accentuate discrete states within the system. Among metric, binary and ordinal variable scaling, ordinal numbers showed the maximum sensitivity in discriminating pollution levels; the observed trends were further enhanced by using the absolute distance coefficient as a resemblance measure. The eutrophic patterns identified were statistically confirmed by a non-parametric permutation test. Finally a step-by-step multivariate procedure is proposed for assessing environmental quality in aquatic ecosystems.Keywords
This publication has 20 references indexed in Scilit:
- Statistical design and analysis for a 'biological effects' studyMarine Ecology Progress Series, 1988
- Analysis of community attributes of the benthic meiofauna of Frierfjord/LangesundfjordMarine Ecology Progress Series, 1988
- A Practical Strategy for Analysing Multispecies Distribution PatternsMarine Ecology Progress Series, 1982
- Zooplankton Communities in the Bristol Channel and Severn EstuaryMarine Ecology Progress Series, 1982
- Multivariate Approaches in Ecology: The Assessment of Ecologic SimilarityAnnual Review of Ecology and Systematics, 1980
- A Comparison of Nonmetric Multidimensional Scaling, Principal Components and Reciprocal Averaging for the Ordination of Simulated Coenoclines, and CoenoplanesEcology, 1977
- Horizontal distribution of planktonic diatoms in Green Bay, mid‐July 19701Limnology and Oceanography, 1975
- Multivariate Approaches to Algal Stratagems and Tactics in Systems Analysis of PhytoplanktonEcology, 1973
- ON THE METHODS AND THEORY OF CLUSTERINGMultivariate Behavioral Research, 1969
- The Inappropriateness of the Correlation Coefficient as a Measure of Taxonomic ResemblanceSystematic Zoology, 1965