Habitat designation based on cluster analysis of ichthyofauna

The steps in a cluster analysis are outlined: character selection, estimation of similarity among objects to be clustered, and construction of clusters. The use of an agglomerative clustering procedure for habitat designation based on ichthyofaunal data colected from the Trinity River Delta, Texas is discussed. Distance and correlation coefficients are used in the estimation of similarity between Trinity River Delta stations. Results of the cluster analysis on this data are presented in the form of dendrograms