DATA:      Cramer et Hytteborn (1987)
DIRECTORY: \CANOCO\SAMPLES\PERMUTIO\LINES
PROBLEM:   Effect of environmental variables on plant composition 
           along a transect
ILLUSTRATION OF:
+ How to test environmental effects in data from one or more line transects
+ The minimum achievable P-value and the number of samples along a line 
  transect
+ How to select samples for analysis in Canoco for Windows
_______________________________________________________________________________
FILE TYPE    |  FILE NAME    |         DESCRIPTION
-------------+---------------+-------------------------------------------------
 SPECIES     | plantspe.dta  | abundance of 68 plant species in 63 sites along
             |               |  4 transects on a rising sea-shore, sampled 
             |               |  in 1978 and 1984 (126 samples, sea-shore only)
ENVIRONMENT  | line_env.dta  | 8 environmental variables and 4 transect 
             |               |  indicators (238 samples, sea-shore+forest)
 PROJECTS    | line1.con     | forward selection of environmental variables 
             |               |  with cyclic permutation tests on the data from
             |               |  transect 1 in 1984 only (9 active samples)
             | line1dis.con  | as line1.con with mirror image disabled
             | lines.con     | forward selection of environmental variables 
             |               |  with cyclic permutation tests on the data from
             |               |  all 4 transects in 1984 (63 active samples;
             |               |  transects are Blocks)
-------------+---------------+-------------------------------------------------

Cramer, W. & Hytteborn, H.(1987): The separation of fluctuation and long-term
change in vegetation dynamics of a rising sea-shore. Vegetatio, 69: 155-167.