Modelling the Effect of Salinity on the Multivariate Distribution of a Water Quality Index
Abstract
Salinity is a tracer of water and nutrient flows and is employed in studies on coastal environment to establish the coastal or remote origins of pollutants and nutrients. The present article analyses the effects of salinity on the multivariate distribution of the Trophic Index TRIX. The approach taken is based on a multivariate nested model with salinity as an explicative variable. We believe that our results are of use in discerning those areas of the North-West Adriatic Sea influenced by the Po River.
DOI: https://doi.org/10.3844/jmssp.2005.277.281
Copyright: © 2005 Daniela cocchi and Michele scagliarini. This is an open access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Keywords
- Multivariate normal distribution
- trophic index
- maximum likelihood estimation
- variance-covariance structure
- multivariate nested model