Hi List,
 
I’ m analysing the selectivity of resting site use by forest carnivores through mixed modelling techniques and I wonder which will be the best r package to deal with several aspects simultaneously:
-          binomial variable response;
-          possible spatial and/or temporal correlation;
I have tried nlme (lme function) and lme4 (lmer function) packages, however I realize that the results were different concerning regression coefficients estimates and p-values!

In nlme package, despite I can add easily a variance structure and/or temporal and spatial correlations structures, the choice of the “family = binomial” is not allowed. On the other hand, with lme4 I can choose the binomial familty, but no structures can be added!

 
Am I wrong with these statements? Zuur et al. 2009 always used lme4 (Mass or glmmML) with binomial data but never nlme!
Can anyone help me? There is other options in R ?

 
Thanks a lot!
Best regards!
 
Filipe Carvalho
 
Filipe Carvalho, MSc, PhD student.
Unidade de Biologia da Conservação (UBC) e
Centro de Investigação em Biodiversidade e 
Recursos Genéticos (CIBIO),
Universidade de Évora,
Casa Cordovil, 2º Andar, Rua Dr. 
Joaquim Henrique da Fonseca, 
7000-890 Évora, (PORTUGAL)
Telefone: + 351266759350


Filipe Carvalho, MSc, PhD student.
Conservation Biology Unit (UBC) and
Research Center in Biodiversity and 
Genetic Resources (CIBIO),
University of Évora,
Casa Cordovil, 2º Andar, Rua Dr. 
Joaquim Henrique da Fonseca, 
7000-890 Évora, (PORTUGAL)
Phone: + 351266759350

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