The phrase "abundance variance" is not a standard expression in written English and may cause confusion.
It could be used in contexts discussing statistical analysis or variability in data related to abundance, but clarity is essential.
Example: "The abundance variance in the population samples indicates significant fluctuations over the years."
Alternatives: "variability in abundance" or "abundance fluctuation".
However, while schools were rare under piers they could be very large, so that abundance greatly exceeded mean open water abundance variance so as to preclude confidence in differences among piers.
Furthermore, the abundance variance within operons is smaller than the variance of all proteins in more than 90% of all known operons.
For each abundance, variance of the fraction of reads supporting each fusion from the total number of fusion-supporting reads was calculated when at least five out of nine, i.e., more than half, fusions had supporting reads.
This is consistent with our observed effects of total ERK abundance variability on the total variance of ppERK in the ERK-on population.
The observed shift, however, does not represent a shift in the composition of the microbiota, but rather a shift in abundance and variance.
In order to evaluate relative changes of mRNA abundances, a variance analyses was performed (SAS Institute, Cary, NC, USA), including individual and combined effects represented by stress level, sex, slaughter batch, mixing group, and stress level*sex (Vijkl = μ + stress leveli + sexj + slaughter batchk + mixing groupl + (stress level*sex ij + errorijkl).
To define whether presence/absence patterns observed in the species accumulation curves were generalisable to measures of β-diversity based on species abundance we used variance partitioning procedures [45], [57].
We focus on shifts in species richness but also consider changes in species abundance through multivariate variance partitioning to assess the role of these three factors on community structure.
Measurements of alveolar macrophage abundance had high variance and no conclusion on relative abundance between experimental groups can be made.
We performed a hierarchical partitioning analysis considering only the distribution of the mouse and the tick estimated from the climate and found that independent contributions of the mouse probability of occurrence and the tick abundance to the variance in the presence of B. burgdorferi were both significant.
We also experiment with two metrics that use the abundance information: I. Variance-stabilized Euclidean distance: An obvious distance measure between two metagenomic samples s1 and s2 is the Euclidean distance between their respective k-mer frequencies.
