@misc{indiciae40233a055bfc,
  title = {Soil respiration and photosynthetic uptake of carbon dioxide by ground-cover plants in four ages of jack pine forest},
  author = {Robert G. Striegl and K.P. Wickland},
  year = {2001},
  doi = {10.1139/cjfr-31-9-1540},
  url = {https://pubs.usgs.gov/publication/70023019},
  note = {Source identifier: 70023019}
}