Dear List,

I realize my question may not be as R related as expected, but hopefully
subscribers will overlook this and hopefully offer some advice.
I have 10 stations with each station having 5 replicates (50 samples in
total). I would like to join the replicates into one sample for further
analysis. Unfortunately I can't find how other studies joined replicates
(most paper I've read only note how they grouped species). Due to lack of
references, I joined samples around their median. This shrunk my initial
dataset of 83 species to 29. If I follow the advice by Warwick and Clarke
(PRIMER-E manual) and remove species contributing less than 1 or 2% to total
abundance, I end up with 14 and 11 species, respectively. Is there a better
way of grouping replicates than by median?

Cheers,
Roman

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