r-cran-vegan 2.5-6+dfsg-1 (amd64 binary) in ubuntu focal

 R package for community ecologists. It contains most multivariate analysis
 needed in analysing ecological communities, and tools for diversity analysis.
 Most diversity methods assume that data are counts of individuals.
 .
 These tools are sometimes used outside the field of ecology, for instance to
 study populations of white blood cells or RNA molecules.