4 References

Halpern, B. S., Frazier, M., Potapenko, J., Casey, K. S., Koenig, K., Longo, C., et al. (2015). Cumulative human impacts: Raw stressor data (2008 and 2013). Knowledge Network for Biocomplexity. doi:10.5063/f1s180fs.

Venter, O., Sanderson, E. W., Magrach, A., Allan, J. R., Beher, J., Jones, K. R., et al. (2016). Sixteen years of change in the global terrestrial human footprint and implications for biodiversity conservation. Nature Communications 7, 12558. doi:10.1038/ncomms12558.