@misc{indiciae58225080ca88,
  title = {Saguaros Under Siege: Invasive Species and Fire},
  author = {T. C. Esque and C.R. Schwalbe and D.F. Haines and W. L. Halvorson},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/1008108},
  note = {Source identifier: 1008108}
}