Mammals & Birds IUCN Range Maps

• Overview
• Data sources
• Content
• Installation
• Usage
• Citation
• Contributing
• Acknowledgments
• References

Overview

This project is dedicated to compute species range size of all Birds and Mammals of the World.

Data sources

This project uses the following databases:

Database	Usage	Reference	Link
IUCN Mammals spatial data	Compute mammal species metrics	IUCN (2023)	link
Bird species distribution maps of the world	Compute bird species metrics	BirdLife International (2023)	link
Natural Earth	World maps	None	link

A comprehensive description of all these databases is available here.

Workflow

The analysis pipeline follows these steps:

1. Create study area (raster of 0.08333° x 0.08333° resolution)
2. Analyses for Mammals species
   • Import IUCN layer
   • Extract species names
   • Check taxonomy
   • Merge subpopulation w/ parent
   • Compute species range size (count grid cells)
   • Compute species range size (polygons area)
   • Intersect polygons on grid cells (occurrences at cell level)
3. Analyses for Birds species
   • Import BirdLife layers
   • Split spatial layers by Birds family
   • Extract species names
   • Check taxonomy
   • Compute species range size (count grid cells)
   • Compute species range size (polygons area)
   • Intersect polygons on grid cells (occurrences at cell level)

Content

This repository is structured as follow:

• DESCRIPTION: contains project metadata (authors, description, license, dependencies, etc.).

• make.R: main R script to set up and run the entire project. Open this file to follow the workflow step by step.

• R/: contains R functions developed especially for this project.

• data/: contains raw data used in this project. See the README for further information.

• outputs/: contains the outputs of the project. See the README for a complete description of the files.

Installation

To install this compendium:

• Fork this repository using the GitHub interface.
• Clone your fork using git clone fork-url (replace fork-url by the URL of your fork). Alternatively, open RStudio IDE and create a New Project from Version Control.

Usage

Launch the make.R file with:

source("make.R")

Notes

• All required packages listed in the DESCRIPTION file will be installed (if necessary)
• All required packages and R functions will be loaded
• Some steps listed in the make.R might take time (several hours)

Citation

Please use the following citation:

Casajus N, Loiseau N & Mouquet N (2024) World mammals and birds species richness. URL: https://github.com/frbcesab/iucn-rangemaps/.

Contributing

All types of contributions are encouraged and valued. For more information, check out our Contributor Guidelines.

Please note that this project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

References

BirdLife International and Handbook of the Birds of the World (2023) Bird species distribution maps of the world. Version 2023-1. Available at: http://datazone.birdlife.org/species/requestdis. Accessed on [22/03/2024].

IUCN (2023) The IUCN Red List of Threatened Species. Version 2023-1. Available at: https://www.iucnredlist.org. Accessed on [22/03/2024].