This Question is related to study of plankton quantification and qualification
The "diversity" function of the R package Vegan can calculate several diversity indices including Shannon. Vegan has a wide range of other functions for analysing communities that might be useful for you.
https://www.rdocumentation.org/packages/vegan/versions/2.4-2/topics/diversity
Assuming that you can classify individuals to genera, this article may be a good reference. If you don't use "R", there are several on line calculators.
https://www.fisheriesjournal.com/archives/2017/vol5issue3/PartE/5-3-26-739.pdf
Shannon-Wiener Index (H) may be calculated by the following formula:
H=∑[(pi)xln(pi)]
Where −
· pi = proportion of total sample represented by species i.
· Divide no. of individuals of species i by total number of samples.
James Weldon, Eyal Shochat,Elaya Perumal Ulagalanthaperumal ,M. A. Azadi Thank u so much to all for giving me guindance.
Get PAST statistical program, which is open-source. Use the tab on 'Diversity' to calculate many indices with a click of a button.
As James Weldon said, use VEGAN package in R. Is very useful to different ecological indices.
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