7 Richness Metrics

Richness refers to the number of unique taxa. Typically, richness is used to refer to the number of unique species found in a sample but richness can be calculated for any taxonomic rank (e.g., order, family, genus).

7.1 Community Richness

rich.df <- nest.df %>% 
  dplyr::mutate(
    rich_genus = taxa_rich(.dataframe = .,
                           .key_col = uid,
                           .counts_col = total,
                           .group_col = genus,
                           .unnest_col = data)
  )

7.2 Subset Richness

sub_rich.df <- nest.df %>% 
  dplyr::mutate(
    rich_ephemeroptera_fam = taxa_rich(.dataframe = .,
                                       .key_col = uid,
                                       .counts_col = total,
                                       .group_col = family,
                                       .filter = order %in% "ephemeroptera",
                                       .unnest_col = data),
    rich_ephemeroptera_gen = taxa_rich(.dataframe = .,
                                       .key_col = uid,
                                       .counts_col = total,
                                       .group_col = genus,
                                       .filter = order %in% "ephemeroptera",
                                       .unnest_col = data),
    rich_ept_gen = taxa_rich(.dataframe = .,
                             .key_col = uid,
                             .counts_col = total,
                             .group_col = genus,
                             .filter = order %in% c("ephemeroptera",
                                                    "plecoptera",
                                                    "trichoptera"),
                             .unnest_col = data)
  )