DuikerCameraTraps

DuikerCameraTraps_units

Study took place in Tai National Park Cote d'Ivoire in 2014. Filmed
Maxwell's duikers (Philantomba maxwellii) were assigned to distance
intervals; recorded distances are the midpoints of the intervals. This data
includes only observations recorded at times of peak activity.

datasets

A simple way of fitting detection functions to distance sampling
data for both line and point transects. Adjustment term selection, left and
right truncation as well as monotonicity constraints and binning are
supported. Abundance and density estimates can also be calculated (via a
Horvitz-Thompson-like estimator) if survey area information is provided. See
Miller et al. (2019) <doi:10.18637/jss.v089.i01> for more information on
methods and <https://examples.distancesampling.org/> for example analyses.

Laura Marshall

Distance

Distance Sampling Detection Function and Abundance Estimation

DuikerCameraTraps function

A <code>data.frame</code> with 6277 rows and 6 variables<ul>
<li><code>Region.Label</code> strata names (single stratum)</li>
<li><code>Area</code> size of study area (40.37 km^2)</li>
<li><code>multiplier</code> spatial effort, as the proportion of a circle covered by
the angle of view of the camera (42 degrees for these cameras)</li>
<li><code>Sample.Label</code> camera station identifier (21 functioning cameras in
this data set)</li>
<li><code>Effort</code> temporal effort, i.e. the number of 2-second time-steps over
which the camera operated</li>
<li><code>object</code> unique object ID</li>
<li><code>distance</code> radial distance (m) to interval midpoint</li>
</ul>

DuikerCameraTraps: Duiker camera trap survey

Description

Arguments

Format