Case study MULTIVARIATE ANALYSIS MESIO 15 16 PROF

R packages , Datasets The following packages, available from CRAN, will be used in

Case of Study: Water Quality Water quality testing is an important part of environmental

Case of Study: Water Quality Objectivo: Análisis de la possible existencia de grupos, para

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Case study MULTIVARIATE ANALYSIS MESIO (15 -16) PROF. SERGI CIVIT PROF. MIQUEL SALICRÚ

R packages , Datasets The following packages, available from CRAN, will be used in these practicals: ade 4’, ‘ape’, ‘cclust’, ‘cluster’, ‘MVN’, ‘mvpart’, ‘rgl’, ‘spam’, ‘spdep’, ‘vegan’. The following datasets, available from ATENEA, will be used in these practicals: ecosystems. xls, ecosystems. txt, (CLUSTER, PCA)

Case of Study: Water Quality Water quality testing is an important part of environmental monitoring, helping researchers to predict and learn from natural processes in the environment and determine human impacts on an ecosystem. These measurement efforts included all of the parameters that affect the quality of water in the environment. Specifically, can be physical, chemical or biological factors. ecosystem. txt is a ASCII file containing, microbiological, physical and chemical factors from different localities. Sampling locations (localities) are in rows, Microbiological factors (total coliforms, fecal streptococci), Physical variables: (mineral content, conductivity, suspended solids) and Chemistry variables : DQO-Mn* are in columns. *(the chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water. It is expressed in milligrams per liter (mg/L), which indicates the mass of oxygen consumed per liter of solution)

Case of Study: Water Quality Objectivo: Análisis de la possible existencia de grupos, para caracterizar los “patrones de contaminación de los ecosistemas” analizados con el fin de definir un protocolo específico de gestión para cada tipología de contaminación con el asesoramiento de expertos en la materia Resolución y elaboración del informe (guión de trabajo): ü Construir Matriz de interdistancias ü Poner de manifiesto la “estructura de grupos” ü Caracterización de los “posibles grupos” ü Determinar el patron de cada grupo (individuo “representante” del mismo) ü Representar los ecosistemas en un espacio de dimension reducido (2 D, 3 D) Entrega informe :