45

ECOM II

If the observed probability for an axis is greater than 0.05 then there is a greater then

5% chance that the observed magnitude of the Eigenvalue could occur by random

chance and the axis is unlikely to explain any significant part of the variability in the

species data.

7.17

Environment plot

This graph shows the environmental variables plotted on the ordination axes. It will

allow you to see which variables are closely correlated with particular axes. For

example, a high positive correlation with an axis will be shown by a variable that has

a long arrow pointing in almost the same direction as the axis. A variable with an

arrow at almost right angles to an axis indicates that it is almost uncorrelated with

the axis.

You are able to plot the environmental variables with the ordination space defined by

the first four axes only. Other axes are unlikely to be of any importance.

Copyright 2004  PISCES Conservation Ltd