Hi,

I have a dataset consisting of species collected from the same location
during 2 time periods - i want to see if the community composition is
similar during the two time periods. My entire dataset is presence/absence
(0/1) data. There are around 23 species and 400 samples (during each time
period, so a total of 800 samples). Will ANOSIM from the vegan package be an
right test to apply? I was going through some papers online where they have
used methods like db-RDA in similar situations. Would it be right to use it
for qualitative data? Any suggestion would be of great help.

Thanks,

Soumi

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