Shepard-type plot of original distance matrix and cophenetic distance matrix for diatom metric species data.

 

 

Heat maps of a Bray-Curtis dissimilarity matrix computed on the raw diatom data from the 2011 diatom metric data set. Interpretation as follows: magenta = dissimilarity close to 0 (maximum similarity); cyan = dissimilarity close to 1 (minimum similarity); without (left) and with (right) ordering of distances.

Species accumulation curve for the diatom metric data. Species accumulation curves study the accumulation of species when the number of sites increases.

 

 

 

Viewing clusters’ species contents. Ward cluster with most abundant species from the OEPA data ordered according to group membership. Color intensities are proportional to the species abundances.

 

The plot depicts fuzzy c-means clusters with chord distance of OEPA diatom species data.