Table 4.
Indicator Species Analysis (see Severns and Sykes, 2020 for an analysis description) results showing which PPN nematodes were statistically associated (*) with pecan soil samples from the Piedmont (60 soil samples) or Coastal Plain (222 soil samples) ecoregions of Georgia, USA.
| Nematode genus | Indicator value (0–100) | Ecoregion | p value (from 5,000 randomizations) |
|---|---|---|---|
| Ring, Mesocriconema spp.* | 73.8 | Coastal Plain | 0.0002 |
| Spiral, Helichotylenchus spp.* | 48.1 | Piedmont | 0.0002 |
| Stubby-root, Paratrichodorus spp.* | 36.1 | Coastal Plain | 0.0028 |
| Root-knot, Meloidogyne spp. | 24.4 | Coastal Plain | 0.69 |
| Dagger, Xiphinema spp. | 15.3 | Piedmont | 0.85 |
| Sheath, Hemicycliophora spp.* | 14.8 | Piedmont | 0.0002 |
| Lesion, Pratylenchus spp.* | 13.0 | Piedmont | 0.0002 |
| Lance, Hoplolaimus spp. | 5.8 | Coastal Plain | 0.28 |
| Pin, Paratylenchus spp. | 3.6 | Coastal Plain | 0.64 |
| Stunt, Tylenchorhynchus spp. | 3.3 | Coastal Plain | 0.83 |
| Cyst, Heterodera spp. | 2.0 | Coastal Plain | 0.71 |