@misc{indiciae46182f242d22,
  title = {Sediment-based carbon nutrition in tropical alpine Isoetes,},
  author = {Jon E. Keeley and D. DeMasson and R. Gonzalez and K. Markham},
  year = {1994},
  url = {https://pubs.usgs.gov/publication/81568},
  note = {Source identifier: 81568}
}