To cite package ‘envar’ in publications use:

  Simoncini, A., Bertoncini, M., Cerofolini, A., Dalpasso, A.,
  Ficetola, G.F., Falaschi, M., & Lo Parrino, E. (2026). 'envar': an R
  package to retrieve and process environmental variables for
  macroecology and biogeography. Ecological Informatics, 99, 104033.
  https://doi.org/10.1016/j.ecoinf.2026.104033

A BibTeX entry for LaTeX users is

  @Article{,
    title = {'envar': an R package to retrieve and process environmental variables for macroecology and biogeography},
    author = {Andrea Simoncini and Michele Bertoncini and Andrea Cerofolini and Andrea Dalpasso and Gentile Francesco Ficetola and Mattia Falaschi and Elia {Lo Parrino}},
    journal = {Ecological Informatics},
    year = {2026},
    volume = {99},
    pages = {104033},
    doi = {10.1016/j.ecoinf.2026.104033},
    url = {https://www.sciencedirect.com/science/article/pii/S1574954126004401},
  }