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Environmental Systems Research
Figure 1 | Environmental Systems Research

Figure 1

From: A new tool for assessment and monitoring of community and ecosystem change based on multivariate abundance data integration from different taxonomic groups

Figure 1

Schematic of three different combination methods for raw species abundance data: “Untreated”, “Normalized” and “Averaged”. Data sets from different taxonomic groups are indicated as coloured squares: blue square = taxa abundance data from taxonomic group 1 (e.g. fishes), green square = taxa abundance data from taxonomic group 2 (e.g. periphyton), yellow square = taxa abundance data from taxonomic group 3 (e.g. macrophytes), red square = taxa abundance data from taxonomic group 4 (e.g. macroinvertebrates). In each data set, samples (S) are rows and species/taxa (SP) columns; each cell in the data matrix contains an abundance value (x, e.g. numbers of individuals, coverage, cell numbers or presence/absence). B = Bray-Curtis Similarity, x – = Normalized abundance, B – = Averaged Bray-Curtis Similarity.

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