Classification and Ordination of Seral Plant Communities

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Abstract
A conceptual model of secondary succession was tested with data from disturbed vegetation in the Agropyron/Poa habitat type using a combination of classification and ordination techniques. Individual stands were classified into communities by an agglomerative method. Results of the Bray-Curtis polar ordination using 3 endpoint selection methods supported the validity of the model. The model is visualized as a solid cone in which all of the plant communities included in a habitat type are positioned relative to their degree of disturbance, inferring their probable secondary successional pattern within habitat types.