Is it possible -using Qiime2- to collapse all “low abundant taxa” (for example phyla <1%) into the same category? with the aim of a easier graphical visualization, leaving only 7-8 colours in the figs, accounting for the major taxa. Showing one category like “Minor phyla” to represent the sum of all “minor taxa” frequencies.
For example, in the Fig1. of qiime2-paper (https://peerj.com/preprints/27295/) all minor phyla are grouped in the category “Other low abundant taxa”.