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USEARCH v11

Low correlation between read abundance and species abundance

See also
 
Defining and interpreting OTUs
  Interpreting counts in OTU tables
 
Abundance bias
  UNBIAS paper
  unbias command

Image

Species frequencies determined by shotgun sequencing (top-left) and 16S read frequencies (bottom-left). The Pearson correlation between the freqency distributions is 0.17 (right). Figure from UNBIAS paper.