CHAPTER 23 Multivariate Experiments From: McCune, B. & J. B. Grace Analysis of Ecological Communities. MjM Software Design, Gleneden Beach, Oregon Tables, Figures, and Equations

Figure Four approaches to analysis of multivariate experiments in community ecology.

Figure Comparison of data grouping for Mantel tests and MRPP.

Figure Vectors representing trajectories of sample units in species space. Solid vectors represent treated sample units; dashed vectors represent controls.

Figure Treatment and control vectors translated to put the tails on the centroid. Vectors represent trajectories of sample units in species space.

Figure Compositional vectors first translated to put the tails on the centroid, then standardized to unit length.