DATA:      van Wijngaarden (unpubl.)
DIRECTORY: \CANOCO\SAMPLES\PERMUTIO\BACIMSPE
PROBLEM:   Testing the effect of a toxicant on a species assemblage 
           (BACI design)
ILLUSTRATION OF:
+ the analysis of a multivariate analysis of a BACI design by permutation 
  methods
+ multivariate randomized intervention analysis
_______________________________________________________________________________
FILE TYPE    |  FILE NAME    |         DESCRIPTION
-------------+---------------+-------------------------------------------------
 SPECIES     | species.dta   | 57 species from a control pond and an impact 
             |               |  pond, each sampled for 10 consecutive months
ENVIRONMENT  | toxicant.dta  | indicator of the impact (a toxicant) after month
             |               |  six at the impacted pond
 COVARIABLES | pondtime.dta  | pond and time indicators
 PROJECTS    | baci_rda.con  | permutation test of "no impact" against a 
             |               |  "constant impact model" using dependent 
             |               |  time shifts
             | logratio.con  | as above but using a log-ratios per sample
             | baci_cca.con  | as above but using CCA instead of RDA
-------------+---------------+-------------------------------------------------