@misc{indiciae9961a0bdc429,
  title = {Ecological thresholds as a basis for defining management triggers for National Park Service vital signs: case studies for dryland ecosystems},
  author = {Matthew A. Bowker and Mark E. Miller and R. Travis Belote and Steven L. Garman},
  year = {2013},
  doi = {10.3133/ofr20131244},
  url = {https://pubs.usgs.gov/publication/ofr20131244},
  note = {Source identifier: ofr20131244}
}