What you say makes sense to me Kay. Best,
Manuel 2012/3/21 Kay Cichini <kay.cich...@gmail.com> > manuel, > > the sites where sampled repeatedly, such that the detection probability is > sufficiently high. some occurrences might be overseen, but as i am not > interested in the abundances or occurrence-rate per se i can live with > missing some. > > another problem of regression like models is that i would not be can't > include too many interactions because I soon will have some > over-parameterisation... ctree can deal with this quite well, as far as i > can tell. > > another point is that the practitioner that will be presented the results > won't be very happy with > regression-cofficients, model-comparisons, AIC and friends. contrary, > ctree would yield an intuitive and simple result which i would fancy for > this purpose! > > yours, > kay > > > > 2012/3/21 Manuel Spínola <mspinol...@gmail.com> > >> That is true, but it can deal with detectability, and I am afraid ctree >> cannot. >> >> Best, >> >> Manuel >> >> 2012/3/21 Kay Cichini <kay.cich...@gmail.com> >> >>> thanks manuel, >>> >>> i'm afraid unmarked can not deal with spatial autocorrelation - >>> see this post: >>> http://groups.google.com/group/unmarked/browse_thread/thread/f45bd5ab12aa127d/26446409f3e2a140?lnk=gst&q=spatial%23#26446409f3e2a140 >>> >>> best, >>> kay >>> >>> >>> 2012/3/20 Manuel Spínola <mspinol...@gmail.com> >>> >>>> You need to look in the "unmarked" package. >>>> >>>> Best, >>>> >>>> Manuel Spínola >>>> >>>> 2012/3/20 Isidore AMAHOWE <ogoudje.amah...@gmail.com> >>>> >>>> > This may be possible with an R packages but i don't know. What i've >>>> been >>>> > told is that a kind of analysis can be done with accupancy analysis >>>> and >>>> > this will give possibility to model the envioronmental factors that >>>> can >>>> > determine the presence of animal species. But this need a probabilitic >>>> > method. >>>> > good luck >>>> > >>>> >>> >> >> >> -- >> *Manuel Spínola, Ph.D.* >> Instituto Internacional en Conservación y Manejo de Vida Silvestre >> Universidad Nacional >> Apartado 1350-3000 >> Heredia >> COSTA RICA >> mspin...@una.ac.cr >> mspinol...@gmail.com >> Teléfono: (506) 2277-3598 >> Fax: (506) 2237-7036 >> Personal website: Lobito de río<https://sites.google.com/site/lobitoderio/> >> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/> >> > > -- *Manuel Spínola, Ph.D.* Instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad Nacional Apartado 1350-3000 Heredia COSTA RICA mspin...@una.ac.cr mspinol...@gmail.com Teléfono: (506) 2277-3598 Fax: (506) 2237-7036 Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/> [[alternative HTML version deleted]]
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