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ordination dilemma

Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment

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ordination dilemma

Postby andybobby » Mon Jan 10, 2011 11:55 am

Hi, I will be much obliged for any hint... Here is my problem:
I have some species variables: most of them dummy (present-absent) and one quantitative (size, but applying to only one species, one dummy). Environmental variables represent type of habitat in the place of species occurrence. So all of them are dummy variables (e.g. hab1 present or absent).

The sample size is quite large (over 1000 cases). What would be the best way of finding correlations between species and E-variables? I applied CCA but have doubts for as I remember, E-variables should be quantitative if we want to assess the strength of the correlation between a species and that variable.

Or, perhaps, I was wrong and a totally different approach to the data would be more appropriate?
andybobby
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