Program CANOCO Version 4.0 September 1997 - written by Cajo J.F. ter Braak
 Copyright (c) 1988-1997 Centre for Biometry Wageningen, CPRO-DLO
 Box 100, 6700 AC Wageningen, the Netherlands.
 CANOCO performs (partial) (detrended) (canonical) correspondence analysis,
 principal components analysis and redundancy analysis.
 CANOCO is an extension of Cornell Ecology program DECORANA (Hill,1979)

 For explanation of the input/output see the manual or
 Ter Braak, C.J.F. (1995) Ordination. Chapter 5 in:
 Data Analysis in Community and Landscape Ecology
 (Jongman, R.H.G., Ter Braak, C.J.F. and Van Tongeren, O.F.R., Eds)
 Cambridge University Press, Cambridge, UK, 91-173 pp.

 *** Type of analysis ***
  Model             Gradient analysis
               indirect     direct     hybrid
 linear         1=PCA       2= RDA       3
 unimodal       4= CA       5= CCA       6
    ,,          7=DCA       8=DCCA       9
               10=non-standard analysis
 Type analysis number
 Answer =  5


 *** Data files ***
 Species data       :   weeds.dta                             
 Covariable data    :                                         
 Environmental data :   xy_coord.dta                          
 Initialization file:                                         

 Forward selection of envi. variables =    0
 Scaling of ordination scores         =   -1
 Diagnostics                          =    3

 File   :   weeds.dta                             
 Title  :  13 arable weeds in Doeksen 1993 (96 plots) data B. Post in Ter Braak (1987)    
 Format :   (I4, 10 (I3, F4.0) )                                               
 No. of couplets of species number and abundance per line :   10


 ***WARNING*** End of file detected in species data
 when reading names of species and samples

 No samples omitted
 Number of samples            96
 Number of species            24
 Number of occurrences      2304


 File  :   xy_coord.dta                          
 Title :  x,y geographical coordinates of 96 plots in filed Doeksen. data               
 Format :     (I4,1X, 2F5.2)                                                   
 No. of environmental variables :     2


 No interaction terms defined



 ***** WARNING *****
 Missing sample names in file with environmental variables
 *************************

 No transformation of species data
 No species-weights specified
 No  sample-weights specified
 No downweighting of rare species

 No. of active  samples:     96
 No. of passive samples:      0
 No. of active  species:     13

 Total inertia in species data=
 Sum of all eigenvalues of CA =     .52814

 
 ****** Check on influence in covariable/environment data ******
 The following sample(s) have extreme values
 Sample Environmental        Covariable  + Environment space
        variable Influence   influence     influence     

     87                        3.0x
 ****** End of check ******

1
 **** Weighted correlation matrix (weight = sample total) ****
 
 SPEC AX1	  1.0000
 SPEC AX2	   .0171	  1.0000
 SPEC AX3	   .1751	   .3314	  1.0000
 SPEC AX4	   .3123	   .3159	   .0000	  1.0000
 ENVI AX1	   .8156	   .0000	   .0000	   .0000	  1.0000
 ENVI AX2	   .0000	   .5669	   .0000	   .0000	   .0000	  1.0000
 ENVI AX3	   .0000	   .0000	   .0000	   .0000	   .0000	   .0000	   .0000
 ENVI AX4	   .0000	   .0000	   .0000	   .0000	   .0000	   .0000	   .0000	   .0000
 x-coor  	  -.6623	   .3308	   .0000	   .0000	  -.8121	   .5836	   .0000	   .0000
 y-coor  	  -.5187	  -.4375	   .0000	   .0000	  -.6359	  -.7718	   .0000	   .0000

         	SPEC AX1	SPEC AX2	SPEC AX3	SPEC AX4	ENVI AX1	ENVI AX2	ENVI AX3	ENVI AX4

 x-coor  	  1.0000
 y-coor  	   .0660	  1.0000

         	x-coor  	y-coor  

    N	name	   (weighted) mean	   stand. dev.	inflation factor

    1	SPEC AX1	         .0000	         .3827
    2	SPEC AX2	         .0000	         .2155
    3	SPEC AX3	         .0000	         .3800
    4	SPEC AX4	         .0000	         .2842
    5	ENVI AX1	         .0000	         .3121
    6	ENVI AX2	         .0000	         .1222
    7	ENVI AX3	         .0000	         .0000
    8	ENVI AX4	         .0000	         .0000
    1	x-coor  	       17.1383	        9.2402	        1.0044
    2	y-coor  	       30.5282	       15.5980	        1.0044


 **** Summary ****

 Axes                               	     1	     2	     3	     4	 Total inertia

 Eigenvalues                       :	  .089	  .015	  .126	  .075	         .528
 Species-environment correlations  :	  .816	  .567	  .000	  .000
 Cumulative percentage variance
    of species data                :	  16.8	  19.6	  43.5	  57.6
    of species-environment relation:	  85.8	 100.0	    .0	    .0

 Sum of all unconstrained eigenvalues      	     	      	      	      	   .528
 Sum of all canonical     eigenvalues      	     	      	      	      	   .103