Lizard data

Description

The giant day gecko (Phelsuma madagascariensis grandis) is a tropical reptile naturally occurring in the northern part of Madagascar. Data represent an extensive capture-recapture experiment at the Masoala rainforest exhibit, Zurich Zoo. The researchers used the individual color patterns of this gecko species for photo recognition. Due to the high number of sampling sessions, this study is based on an unusually good dataset. Moreover, it is a captive population and, therefore, we can be sure that the closed population assumption is valid. However, the dataset is comparable to natural conditions because of the dimensions of the Masoala rainforest exhibit; it is currently the second largest tropical exhibit in the world. Additional variation in the dataset results from time-dependent variation in recapture rates (obvious dependence of gecko activity on daily weather) and the photographic capture method (it is harder to spot and photograph juvenile compared to adult geckos).

Usage

lizard

Format

A matrix with 68 rows (observed units) and 30 columns (capture occasions)

References

Wanger T.C. et al. (2009) How to monitor elusive lizards: comparison of capture-recapture methods on giant day geckos (Gekkonidae, Phelsuma madagascariensis grandis) in the Masoala rainforest exhibit, Zurich Zoo. Ecological Research 24(2):345–353.

Examples

data(lizard)

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)

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Type 'license()' or 'licence()' for distribution details.

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Type 'contributors()' for more information and
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Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
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> library(BBRecapture)
Loading required package: HI
Loading required package: locfit
locfit 1.5-9.1 	 2013-03-22
Loading required package: lme4
Loading required package: Matrix
Loading required package: secr
This is secr 2.10.3. For overview type ?secr
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/BBRecapture/lizard.Rd_%03d_medium.png", width=480, height=480)
> ### Name: lizard
> ### Title: Lizard data
> ### Aliases: lizard
> ### Keywords: datasets
> 
> ### ** Examples
> 
> data(lizard)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>