@misc{indiciaee9b0d04e63c4,
  title = {Energy flow and the “grassification” of desert shrublands},
  author = {Julio L. Betancourt},
  year = {2015},
  doi = {10.1073/pnas.1512078112},
  url = {https://pubs.usgs.gov/publication/70155870},
  note = {Source identifier: 70155870}
}