multivariate statistical techniques such as cluster analysis, multidimensional scaling and principal component analysis were applied to evaluate the temporal and spatial variations in water quality data set generated for two years (2008-2010) from six monitoring stations of veli-akkulam lake and compared with a regional reference lake vellayani of south india. seasonal variations of 14 differen...

tea leaves contain unsaturated fatty acids, key precursors of volatile compounds contributing to tea aroma quality. tea is cultivated in areas with diverse environmental conditions. nitrogenous fertilizers influence tea yields and quality. a previous single site study demonstrated that increasing nitrogenous fertilizer rates raised fatty acid levels. however it is not known if the magnitudes an...

The analysis of changes in water quality in a monitoring network system is important because the sources of pollution vary in time and space. This study utilized analysis of the water quality index calculation, hierarchical cluster analysis, and mapping. This was achieved by assessing the water quality parameters of the samples collected from Galma River in Zaria, Northwestern Nigeria in wet an...