On Feb 21, 2011, at 12:38 PM, Vanessa Francisco wrote:
Hello! I'm a PhD student working with coral reef fish diversity in
Mexico.
Are you hiring?
I want to do species accumulation curves but I have differential
sampling
effort for each "sample".
Do you know or have developed an R script that consider the
differential
effort of each sample?
PRIMER
... not familiar with that package.
and other programs use each pack of species as a replica without the
possibility of telling the program that the first group of species
(sample)
was collected during a 30 minutes dive and the second group (sample)
was
taking after 60 minutes dive and so on.
If you were using a glm model with a a log(poisson) link, then adding
an offset term that was equal to log(time) should sensibly incorporate
the information for the differential effort.
I would really appreciate any kind of help!
Best regards,
Vanessa Francisco <"><
--
David Winsemius, MD
West Hartford, CT
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