In statistical ecology, we often need to calculate the sampling variance of a function of an estimate of which we do know the sampling variance. I keep forgetting how to implement the so-called delta method in R that allows to get an approximation of this quantity. So in this post I go through two examples in population ecology that should help me remembering. I use the deltamethod function from the msm package.
Following @JamesGrecian's tracks (who helped me to get the tweets), I did some analyses of the #isec2018 tweets largely inspired (if not copy and pasted) by previous analyses from @brenborbon, @_ColinFay and @bryangoodrich - Data & #rstats codes https://t.
And nooooooow, ladies and gentlemen, @LMarescot presents her work on multispecies occupancy models to infer poaching #ISEC2018 @CNRSenLR @INEE_CNRS #teamboulet @WWF @SMARTCnsvTools pic.twitter.com/FUiATuATNJ
— Olivier Gimenez 🍉 (@oaggimenez) 5et 2018
Aaaaaaaaaaaaaaaaaaaand now, ladies and gentlemen, @NSantostasi on stage to present her work on estimating prevalence of hybrids in 🇮🇹 wolves using #HMMs and capture-recapture data #teamboulet @CNRSenLR @INEE_CNRS @romolocaniglia @umontpellier #CEFE pic.
Are you ready for an awesome talk by @oaggimenez on regularization techniques for covariate selection in #caprecapt studies with Ian Renner @MoonbeamLevels ? #ISEC2018 @ISECStatEcol 😍💪🎉 pic.twitter.com/XD4IRPgoL8
— Julie Louvrier 🐱🐺 (@LouvrierJulie) 3 juillet 2018
And now, ladies and gentlemen, the amazing @LouvrierJulie 👏 who tells us about mechanistic #SDMs to study 🐺 colonization in 🇫🇷 #ISEC2018 #teamboulet @ONCFS_officiel @CNRSenLR @INEE_CNRS @umontpellier pic.twitter.com/JUTayPLTSu
— Olivier Gimenez 🍉 (@oaggimenez) 2 juillet 2018 This is the end.
We organised the second conference of the GdR EcoStat. We spent two lovely days in Montpellier talking about ecological statistics with the hundred people who attended. The talks are available here.
Jean-Dominique Lebreton went on retirement, and we could not let him go without organizing something in his honor. Jean-Do had a tremendous influence in the field of statistical ecology with important contributions in (among others) multivariate analyses, software developments, population dynamics, and capture-recapture methods.
We organised the first conference of the GdR EcoStat. We spent two lovely days in Lyon talking about ecological statistics with the hundred people who attended. The talks are available here.