R help - Jan 2012 - Estimate the average abundance using Poisson regression with a log link.

Hello, please excuse the simplicity of this question as I am not very good
with stats. I am taking a class, using R which I am learning at the same
time, and the questions asks us to "Estimate the average abundance using
Poisson regression with a log link". I can estimate the abundance from
"x",
but I can seem to figure out how to get the average abundance in this
method. Any suggestions would be welcome as I have spent about 4 hours
trying to figure this one out.

Thanks.

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There is a no homework rule, but:

1. "abundance" + "poisson" seems to be an animal species
abundance problem
in a capture-recapture framework.
2. If so, check out packages 'Rcapture' and 'SPECIES'. They both
implement
several estimators, such as Burnham and Overton's jacknife or Chao's
estimators. (The poisson model is a natural one).
3. Personally, I prefer the first, but this is because I'm more used to it
and have never worked with 'SPECIES', just took a look at it.

Rui Barradas


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P.S.

I don't understand what you mean by "log link" but if it's the
use of a
log-normal to get improved confidence intervals, package 'SPECIES'
implements it, unlike 'Rcapture' that only gives point estimates.

Rui Barradas




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