sparrowDetectionData: Brewer's Sparrow detection data

sparrowDetectionDataR Documentation

Brewer's Sparrow detection data


Detection data from line transect surveys for Brewer's sparrow on 72 transects located on a 4105 km^2 study area in central Wyoming. Data were collected by Dr. Jason Carlisle of the Wyoming Cooperative Fish & Wildlife Research Unit in 2012. Each transect was 500 meters long. See the package vignettes for tutorials of the basic analysis.


A data.frame containing 356 rows and 5 columns. Each row represents a detected group of sparrows. Column descriptions:

  1. siteID: Factor (72 levels), the site or transect where the detection was made.

  2. groupsize: Number, the number of individuals within the detected group.

  3. sightdist: Number, distance (m) from the observer to the detected group.

  4. sightangle: Number, the angle (degrees) from the transect line to the detected group.

  5. dist: Number, the perpendicular, off-transect distance (m) from the transect to the detected group. This is the distance used in analysis. Calculated using perpDists.


The Brewer's sparrow data are a subset of the data collected by Jason Carlisle and various field technicians for his Ph.D. from the Department of Ecology, University of Wyoming, in 2017. This portion of Jason's work was funded by the Wyoming Game and Fish Department through agreements with the University of Wyoming's Cooperative Fish & Wildlife Research Unit (2012).


Carlisle, J.D. 2017. The effect of sage-grouse conservation on wildlife species of concern: implications for the umbrella species concept. Dissertation. University of Wyoming, Laramie, Wyoming, USA.

Carlisle, J. D., and A. D. Chalfoun. 2020. The abundance of Greater Sage-Grouse as a proxy for the abundance of sagebrush-associated songbirds in Wyoming, USA. Avian Conservation and Ecology 15(2):16. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.5751/ACE-01702-150216")}

See Also


Rdistance documentation built on July 9, 2023, 6:46 p.m.