To cite landscapeR in publications use:

  Thomas, A., Masante, D., Jackson, B., Cosby, B., Emmett, B., Jones,
  L. (2020). Fragmentation and thresholds in hydrological flow-based
  ecosystem services. Ecological Applications. URL
  https://doi.org/10.1002/eap.2046

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Fragmentation and thresholds in hydrological flow-based ecosystem services.},
    author = {Thomas Amy and Masante Dario and Jackson Bethanna and Cosby Bernard and Emmett Bridget and Jones Laurence},
    journal = {Ecological Applications},
    year = {2020},
    url = {https://doi.org/10.1002/eap.2046},
  }