To cite microeco in publications use:

  Chi Liu, Yaoming Cui, Xiangzhen Li, Minjie Yao. microeco: an R
  package for data mining in microbial community ecology. FEMS
  Microbiology Ecology, 2021, Volume 97, Issue 2, fiaa255.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {microeco: An R package for data mining in microbial community ecology},
    author = {Chi Liu and Yaoming Cui and Xiangzhen Li and Minjie Yao},
    year = {2021},
    journal = {FEMS Microbiology Ecology},
    volume = {97},
    number = {2},
    pages = {fiaa255},
    doi = {10.1093/femsec/fiaa255},
    url = {https://doi.org/10.1093/femsec/fiaa255},
  }