TABLE 2.

Population structure of the uncultured fecal viral community as determined by mathematical modelinga

Assumed avg genome size (kb)Total no. of viral genotypes% Abundance of most abundant virus (a × 100)Evenness parameter (b)bShannon index (Hnats)
151,450 ± 7002.4 ± 1.20.611 ± 0.1106.83
301,250 ± 2304.2 ± 0.70.715 ± 0.0416.45
501,930 ± 4706.3 ± 0.80.831 ± 0.0296.43
  • a The total number of viral genotypes is equivalent to species richness. Evenness is a measure of how genotypes are distributed within the population. The Shannon index is a measure of diversity that incorporates both species richness and evenness.

  • b Rank-abundance curve shape, ni = ai−b.