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  • rarefaction curves and simulation

    Hiho

    i want to create a rarefaction curve using R i.e. vegan {rearecurve/speccaccum}.

    This worked out quite well (please see here)

    Anyways, as you can see in the figures the curves don't reach saturation. So I know that i have to kind of fit or simulate the missing data but this is exactly the problem. How can I produce a fit or something similar that shows me how large my sample has to be to reach saturation in discovered species?



    Thanks for your time and help!



    ps. code:

    (raremax <- min(rowSums(t(species))))
    Srare <- rarefy(t(species), raremax)
    plot(specnumber(t(species)), Srare, xlab = "Observed No. of Species", ylab = "Rarefied No. of Species")
    abline(0, 1)
    rarecurve(t(species), step = 20, sample = raremax, col = "blue", cex = 0.6)

    (crosspost on biostars)

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