unmarked (version 0.11-0)

frogs: 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

Source

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

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.

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)