Anuran Larvae Counts in Minnow Traps Across Pond Type

Description

This data set consists of counts of anuran larvae as a function of pond type, pond perimeter, and presence of water scorpions (Ranatra sp.).

Usage

data(min.trap)

Format

A data frame with 24 observations on the following 6 variables.

Type

pond type, denotes the location of ponds in either bog or upland environment

Num_anura

number of anuran larvae in minnow traps

Effort

number of trap nights (i.e., number of traps x days of trapping) in each pond

Perimeter

pond perimeter in meters

Num_ranatra

number of water scorpions trapped in minnow traps

log.Perimeter

natural log of perimeter

Details

Mazerolle (2006) uses this data set to illustrate model selection for Poisson regression with low overdispersion.

Source

Mazerolle, M. J. (2006) Improving data analysis in herpetology: using Akaike's Information Criterion (AIC) to assess the strength of biological hypotheses. Amphibia-Reptilia 27, 169–180.

Examples

data(min.trap)
## maybe str(min.trap) ; plot(min.trap) ...

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(AICcmodavg)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/AICcmodavg/min.trap.Rd_%03d_medium.png", width=480, height=480)
> ### Name: min.trap
> ### Title: Anuran Larvae Counts in Minnow Traps Across Pond Type
> ### Aliases: min.trap
> ### Keywords: datasets
> 
> ### ** Examples
> 
> data(min.trap)
> ## maybe str(min.trap) ; plot(min.trap) ...
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>