Dear Colleagues!
Is it possible to use percentage cover data (e.g. plant cover in sample plots) when creating rarefaction curves with the iNEXT package in R? (that can compute rarefaction curves for the Hill numbers)
Unfortunately, I cannot convert these percentages to count data.
Therefore I can only use the incidence-frequency based data (0/1) as input for creating these curves, but with this limitation only the species richness curves (q=0) make sense to me, and I lose the abundance-based information of my percent cover data in the shannon (q=1) and simpson (q=2) curves.
What is the proper way when I only have percentage cover data?
Any ideas would be appreciated!
You can only develop rarefaction curves with actual count data. But if each point is considered an independent sample unit when point sampling to determine cover, the data will follow a binomial distribution, and analyses should be based on binomial statistics :)
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