constellation diagram A representation of species affinities that is based on χ² as a measure of the association between species. The reciprocal of the χ² value for each species pair is used to plot the diagram, so that highly positively associated species with large X² values are positioned closely together. Thus clusters of similarly distributed species may emerge, while the transitional affinities of a species with those of another main focal area or cluster will be evident. The constellation diagram exemplifies a simply calculated ordination method.

constellation diagram A representation of species affinities based on χ2 as a measure of the association between species. The reciprocal of the χ² value for each species pair is used to plot the diagram, so that highly positively associated species with large χ² values are positioned closely together. Thus clusters of similarly distributed species may emerge, while the transitional affinities of a species with those of another main focal area or cluster will be evident. The constellation diagram exemplifies a simply calculated ordination method.

constellation diagram A representation of species affinities based on χ² as a measure of the association between species. The reciprocal of the χ² value for each species pair is used to plot the diagram, so that highly positively associated species with large χ² values are positioned closely together. Thus, clusters of similarly distributed species may emerge, while the transitional affinities of a species with those of another main focal area or cluster will be evident. The constellation diagram exemplifies a simply calculated ordination method.