menabe

Deforestation process in central Menabe, western Madagascar

R script

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

Vieilledent G., C. Grinand, M. Pedrono, T. Rabetrano, J.-R. Rakotoarijaona, B. Rakotoarivelo, F. A. Rakotomalala, L. Rakotomalala, A. Razafimpahanana and F. Achard. 2016. Unceasing deforestation in western Madagascar is due to uncontrolled global trade and bad governance, not poverty. Conservation Letters. Submitted.

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

Data downloaded from Zenodo

GitHub is not made to store large data files. As a consequence, the data for the analysis have been archived on Zenodo. They are downloaded and extracted while executing the R script. Once the data are extracted, the working directory will include two additional folders:

• A gisdata folder with the geographical data:
  • The rasters folder includes GeoTIFF raster files for Madagascar forest cover for the years 1990, 2000, 2010 and 2014 (forXXXX.tif) and the maps of the spatial relative probability (scaled on [1,65535]) of deforestation for Madagascar for the year 2010 (prob2010.tif).
  • The vectors folder includes some shapefiles for Madagascar boundaries, main localities, main roads, field observation points and the protected area network (SAPM).
• A photos folder with photos used for the illustrations (biodiversity richness, causes of deforestation and field surveys).

R Markdown file

The R Markdown file menabe.Rmd includes all the source code to combine text and computation results and generate the scientific report. It is called and compiled while executing the menabe.R R script.

Additional folders

• The bib folder includes some bibliographic references (biblio.bib) and the bibliographic format (*.csl).
• The scripts folder includes a bash script photo.sh to modify and combine photos for illustration with the ImageMagick software.

Results

All results are saved in the figs, rast and report folders.

Figure S1: Spatial probability of deforestation for the year 2010.

License

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