Detrended Correspondence Analysis

[Adorno Antonio]

To study community structure I use correspondence analysis package
software.  I think that CA is the best method to describe insect
community structure eventhough there have been many criticisms about
the Horseshoe Effect.  To compare the results prduced by CA I would
like to use the Detrended Correspondence Analysis.
I would be grateful if someone would indicate to me how or where to
find the DCA (Hill, M.O., 1980)  package software on the net.
Thanking you in advance.

Antonio Adorno
e-mail: ALICAPI at VM.UNICT.IT