The age of a gene was considered as the taxonomic level of the oldest aligned protein.
Soil types with larger sample sizes were predicted over a greater area at each taxonomic level.
They were then weighed, filtered and sorted, and the species were identified to the lowest taxonomic level possible.
Marker lineage was reported if 75% of the classifications were in agreement at a particular taxonomic level.
(a) OTUs with an average abundance >0.01% within either patient group were classified at the family taxonomic level.
This cutoff was shown to capture the taxonomic level typically associated with 'species' (or above) (Arif et al., 2014).
Identification error varied with taxonomic level and lineage, but remained low at the morphospecies level.
The use of a higher taxonomic level is particularly useful when rapid biodiversity surveys are required.
For example, in insects, Subfamily is a crucially important taxonomic level and should be included after Family in the sequence.
These terms are defined relative to a particular node (e.g., representing a taxonomic level) on the cladogram.
This information gap is principally due to difficulty in studying these organisms because of their small size and hard-to-distinguish morphology at the species taxonomic level.
