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. 2012 Feb 16;7(2):e30973. doi: 10.1371/journal.pone.0030973

Table 4. Values for enrichment (EI) and structural (SI) indices of soil nematode communities determined by both morphology and qPCR.

Soil sample 1 Soil sample 2 Soil sample 3
morphology qPCR morphology qPCR morphology qPCR
EI value 92.0 92.1±2.3 92.9 89.8±8.89 92.5 95.2±1.71
SI value 26.7 13.0±2.76 17.4 1.3±1.48 0.0 5.0±1.53
No. of nematodes 175 >200 166 >200 106 >200

The functional guilds of each genus [22] and their standard weightings were used to calculate the components of the food web from which the enrichment (EI) and structural (SI) indices were calculated for each soil sample (see [23] for further details). Values derived from qPCR data represent means ± sem.