frogs {unmarked}R Documentation

2001 Delaware North American Amphibian Monitoring Program Data

Description

frogs contains NAAMP data for Pseudacris feriarum (pfer) and Pseudacris crucifer (pcru) in 2001.

Usage

data(frogs)

Format

pcru.y
matrix of observed calling indices for pcru
pcru.bin
matrix of detections for pcru
pcru.data
array of covariates measured at the observation-level for pcru
pfer.y
matrix of observed calling indices for pfer
pfer.bin
matrix of detections for pfer
pfer.data
array of covariates measured at the observation-level for pfer

Details

The rows of pcru.y, pcru.bin, pfer.y, and pfer.bin correspond to sites and columns correspond to visits to each site. The first 2 dimensions of pfer.data and pcru.data are matrices of covariates that correspond to the observation matrices (sites times observation), with the 3rd dimension corresponding to separate covariates.

Source

https://www.pwrc.usgs.gov/naamp/

References

Mossman MJ, Weir LA. North American Amphibian Monitoring Program (NAAMP). Amphibian Declines: the conservation status of United States species. University of California Press, Berkeley, California, USA. 2005:307-313.

Examples

data(frogs)
str(pcru.data)

[Package unmarked version 0.8-1 Index]