🦍 🇨🇩 Estimating Grauer's gorilla distribution and population size in eastern Democratic Republic of the Congo

Data

Data can be found in the data folder:

• The rasters folder includes a GeoTIFF raster stack file called environ.tif with all the environmental variables used for the species distribution model.
• The gorillas folder includes three .csv data files:
  • gorillas-erate-dens.csv: data for the density/e-rate relationship
  • gorillas-erate.csv: data to compute local densities and the weighted mean density
  • gorillas.csv: presence-absence data for the species distribution model

R script

The R script gorillas.R can be run to reproduce the results of the following study:

Plumptre A. J., S. Nixon, D. Kujirakwinja, G. Vieilledent, R. Critchlow, E. A. Williamson, R. Nishuli, A. Kirkby and J. S. Hall. 2016. Catastrophic Decline of World's Largest Primate: 80% Loss of Grauer's Gorilla (Gorilla beringei graueri) Population Justifies Critically Endangered Status. PLoS One. 11(10): e0162697. [doi:10.1371/journal.pone.0162697].

To run the script, you can either execute the gorillas.sh shellscript file or run the R script under a R GUI such as RStudio.

Results

All results are saved in the results and report folders. The report.Rmd file is used to embed R computations and text and report briefly the main results of the study in the file report/report.pdf.

License

Data and R script are available under the GNU General Public License version 3 (see LICENSE file).