@misc{indiciae852864c1542c,
  title = {The USA National Phenology Network; taking the pulse of our planet},
  author = {Jake F. Weltzin},
  year = {2011},
  doi = {10.3133/fs20113023},
  url = {https://pubs.usgs.gov/publication/fs20113023},
  note = {Source identifier: fs20113023}
}