[R] question about capscale (vegan)

[Alicia Amadoz]

Hello,

I am interested in using the capscale function of vegan package of R. I
already have a dissimilarity matrix and I am intended to use it as
'distance' argument. But then, I don't know what kind of data must be in
'comm' argument. I don't understand what type of data must be referred
as 'species scores' and 'community data frame' since my data refer to
nucleic distances between different sequences.

I would be very grateful if you could help me with this fact in any
manner. Thank you in advance for your help.

Regards,
Alicia