I wanted to see the relation between species abundance and environmental parameters. I found that CCA could be a better option. But I am struggling to interpret the plot. Can any one help me in this regard?
The author of the "vegan" R package, Jari Oksanen, has a very good collection of lecture slides at his homepage:
cc.oulu.fi/~jarioksa/opetus/metodi/
especially:
http://cc.oulu.fi/~jarioksa/opetus/metodi/mmmbeam2.pdf
Thomas
If you are interested into the rules of CCA plot interpretation, you could complete the Oksanen's slides by reading the following paper :
Canonical correspondence analysis and related multivariate methods in aquatic ecology
by Cajo ter Braak and Piet Verdonschot
Aquatic Sciences 57/3, 1995, pp. 255-289.
DOI: 10.1007/BF00877430
available at : http://link.springer.com/article/10.1007%2FBF00877430#page-1
Oldy but goldy... Cajo ter Braak is the father of CCA.
you can also check this link using XLSTAT
https://help.xlstat.com/customer/en/portal/articles/2062255-canonical-correspondence-analysis-cca-tutorial?b_id=9283
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