[R-sig-eco] Constructing a ZSM SAD in R

Peter Solymos solymos at ualberta.ca
Sun Jan 11 21:28:39 CET 2009

Dear Roy,
I haven't done this, but I would start with the function zsm in the
package untb by Robin Hankin. See also the function etienne.

Péter Sólymos, PhD
Department of Mathematical and Statistical Sciences
University of Alberta
Edmonton, Alberta, T6G 2G1

On Sun, Jan 11, 2009 at 12:33 PM, Roy Martin <royworth at gmail.com> wrote:
> Hi all,
> I was hoping someone on the board would have experience constructing the
> zero-sum multinomial (ZSM) species abundance distribution (SAD) in R.
> Unfortunately, my expertise in probability theory and R programming appear
> limited, which has left me largely confused about how to construct the
> expected SAD dataset in R using the maximum likelihood estimates of 'theta'
> and 'm' that I have obtained for my dataset using the methods and PARI/GP
> code provided in Etienne (2005).  If anyone has any experience with this in
> R, I would be extremely grateful for any suggestions.
> Sincerely,
> Roy Martin
> PhD Candidate
> Wildlife and Fisheries Resources
> West Virginia University
> Morgantown, WV 26506
> rmarti10 at mix.wvu.edu
> royworth at gmail.com
> Etienne, R.S. 2005. A new sampling formula for neutral biodiversity. Ecology
> Letters 8: 253-260.
>        [[alternative HTML version deleted]]
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