Hilary, Check http://www.ramas.com/CMvar.htm#varest for some references on this. There is also a link to an Excel file there that has a worked-out example.
-- H. Resit Akcakaya Professor Department of Ecology and Evolution Stony Brook University Stony Brook, New York 11794 USA http://life.bio.sunysb.edu/ee/akcakayalab/ On Fri, 23 May 2008 12:29:10 -0400, Hilary Cooley <[EMAIL PROTECTED]> wrote: >I am working on a PVA for cougars as part of my graduate project. I have >come across a number of articles that state the importance of removing >sampling error from vital rate (survival and fecundity) variance estimates. > Morris and Doak (2002) describe several methods and also provide the Malab >code, but I am having trouble figuring out which method to use. > >My data set is from 6 years of radio collared cougars in 2 study areas. I >have survival rates from males and females in 3 age classes, as well as >fecundity rates. Sample sizes are small, particularly when I break survival >into annual rates, which is required for most of these methods. >I tried using the Kendall and the White method in Matlab, but either the >input format I am using is wrong, or the method is not right for my data. > >I am also interested in removing sampling error from census counts of >cougars, but Frekleton et al. (2006) are not too encouraging. > >Id appreciate any help on this! >=========================================================================
