secr - Spatially Explicit Capture-Recapture

Functions to estimate the density and size of a spatially distributed animal population sampled with an array of passive detectors, such as traps, or by searching polygons or transects. Models incorporating distance-dependent detection are fitted by maximizing the likelihood. Tools are included for data manipulation and model selection.

Last updated 15 days ago

9.98 score 3 stars 5 packages 394 scripts 2.0k downloads

openCR - Open Population Capture-Recapture

Non-spatial and spatial open-population capture-recapture analysis.

Last updated 30 days ago

6.09 score 4 stars 51 scripts 849 downloads

secrlinear - Spatially Explicit Capture-Recapture for Linear Habitats

Tools for spatially explicit capture-recapture analysis of animal populations in linear habitats, extending package 'secr'.

Last updated 1 months ago

4.45 score 28 scripts 375 downloads

secrdesign - Sampling Design for Spatially Explicit Capture-Recapture

Tools for designing spatially explicit capture-recapture studies of animal populations. This is primarily a simulation manager for package 'secr'. Extensions in version 2.5.0 include costing and evaluation of detector spacing.

Last updated 2 months ago

4.40 score 56 scripts 547 downloads

ipsecr - Spatially Explicit Capture-Recapture by Inverse Prediction

Estimates the density of a spatially distributed animal population sampled with an array of passive detectors, such as traps. Models incorporating distance-dependent detection are fitted by simulation and inverse prediction as proposed by Efford (2004) <doi:10.1111/j.0030-1299.2004.13043.x>.

Last updated 2 years ago

3.70 score 7 scripts 206 downloads