Introduction

7

2.1

Methods offered by CAP

Data set statistics

30

Species correlations

54

Data transformations

39

Changing the data to relative magnitudes

41

Dealing with zeros

39

Transposing data

42

Analysis of Similarity   ANOSIM 

48

Similarity percentages  SIMPER

49

Principal Components Analysis  PCA

53

Non Metric Multidimensional scaling

58

Reciprocal Averaging RA

67

Detrended Correspondence Analysis DECORANA

64

Two way indicator species analysis TWINSPAN

70

Agglomerative cluster analysis

75

Divisive cluster analysis

80

Similarity measures

82

Association analysis

96

Experimental methods:

Species Filtering

98

2.2

Installation

System requirements

:

1. A PC running Windows 95 or later

2. 10 MB of spare hard disk space

3. SVGA screen running at minimum 256 colours.

CAP does not limit the size of your data set, however your hardware will. To

use CAP with very large data sets (1000 or more species or samples) you will

need a fast modern machine with 256 MB memory or more.

Installation

:

1. Place the CAP CD in your CD drive: the installation process should begin

automatically   follow the on screen instructions.

2. If the CD does not auto play, browse the CD in Windows Explorer or My

Documents and click file named Setup.exe in the root directory.

    3.

When installation is complete, there will be a CAP entry under Start:

Programs. An uninstall facility will also be created, in case you wish to

remove the program.

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