Re: [R-sig-eco] SDM-model evaluation

2014-02-21 Thread Frederico V. Faleiro
Hi Ludovico, I think you could have better methods to modelling richness searching the literature about spatial pattern of species richness and not in the ecological niche modelling or species distribution modelling literature. The bellow papers are a good start. The software SAM have the option

Re: [R-sig-eco] SDM-model evaluation

2014-02-21 Thread Martin Weiser
Hi, I am not sure why AUC should be better than, say, AICc - second order Akaike criterion and AIC weights (comfortably calculated by AICcModavg package) or Nagelkerke's R2 in this case. Would anybody be so kind and explain this for me? I just want to make warning: do not put strong (or any) empha

[R-sig-eco] SDM-model evaluation

2014-02-20 Thread Ludovico Frate
Hi all,I am trying to built a species distribution model with count data (Species Richness) using a GLM. My independent variable are computed at multiple-scales. In order to select which is the best scale for my model, I first calculate a bivariate model for each of the predictor for each scale.