| 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)