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 0.12-3 Index]