bullfrog

This is a data set from Mazerolle et al. (2014) on the occupancy of
Bullfrogs (Lithobates catesbeianus) in 50 wetlands sampled in
2009 in the area of Montreal, QC.

datasets

This package includes functions to create model selection tables based on Akaike's information criterion (AIC) and the second-order AIC (AICc), as well as their quasi-likelihood counterparts (QAIC, QAICc).  The package also features functions to conduct classic model averaging (multimodel inference) for a given parameter of interest or predicted values, as well as a shrinkage version of model averaging parameter estimates.  Other handy functions enable the computation of relative variable importance, evidence ratios, and confidence sets for the best model.  The present version works with Cox proportional hazards models and conditional logistic regression ('coxph' and 'coxme' classes), linear models ('lm' class), generalized linear models ('glm', 'vglm', and 'zeroinfl' classes), linear models fit by generalized least squares ('gls' class), linear mixed models ('lme' class), generalized linear mixed models ('mer' and 'merMod' classes), multinomial and ordinal logistic regressions ('multinom'}, 'polr', 'clm', and 'clmm' classes), robust regression models ('rlm' class), nonlinear models ('nls' class), and nonlinear mixed models ('nlme' and 'nlmer' classes).  The package also supports various models of 'unmarkedFit' and 'maxLikeFit' classes estimating demographic parameters after accounting for imperfect detection probabilities.  Some functions also allow the creation of model selection tables for Bayesian models of the 'bugs' and 'rjags' classes.

Marc J Mazerolle

AICcmodavg

Model selection and multimodel inference based on (Q)AIC(c)

bullfrog function

MacKenzie, D. I., Nichols, J. D., Lachman, G. B., Droege, S., Royle,
 J. A., Langtimm, C. A. (2002). Estimating site occupancy rates when
 detection probabilities are less than one. Ecology 83,
 2248--2255. Mazerolle, M. J., Perez, A., Brisson, J. (2014) Common reed
 (Phragmites australis) invasion and amphibian distribution in
 freshwater wetlands. Wetlands Ecology and Management 22,
 325--340.

bullfrog: Bullfrog occupancy data and common reed invasion

Description

Usage

Arguments

source

Details

Examples