Dear Roman,

I have that book. But it is no mention on how the funtion calculate
diversity for different methods.
I assume someone used that function before, do anyone?

Thanks a lot!

Cheers,


-- 
Gian




2012/3/30 Roman Luštrik <roman.lustrik@gmail.com>

> If you know BiodiversityR, you probably know the corresponding book, Tree
> diversity analysis?
> http://www.worldagroforestry.org/downloads/publications/PDFs/B13695.pdf
>
>
> Cheers,
> Roman
>
>
> 2012/3/30 Gian Maria Niccolò Benucci <gian.benucci@gmail.com>
>
>> Hi all,
>>
>> I would compare the diversity of two groups of samples through the use of
>> diversity indices such as richness, shannon, simpson, evennes etc.
>> I then used the diversityresult() to calculate such indices. Once I got
>> diversity for each sample and tested for data normality I used simple
>> ANOVA
>> to evaluate differences between such groups.
>>
>> -Do this apprach be correct?
>>
>> Moreover, in the help of the function is written: "Method of calculating
>> the diversity statistics: "all" calculates the diversity of the entire
>> community (all sites pooled), "s" calculates the diversity of each site
>> separatedly, "mean" calculates the average diversity of the sites, "sd"
>> calculates the standard deviation of the diversity of the sites"
>>
>> - What is the differenc in calculation between "all" and "mean" methods?
>> maybe "all" first pools sites and then calculate diversity while "mean"
>> first average the sites and then calculate diversity?
>>
>> Thanks a lot for replies,
>>
>> --
>> Gian
>>
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>>
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>
>
>
> --
> In God we trust, all others bring data.
>

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