Table 1. Results from multivariate PERMANOVA analyses for differences in nematode community structure.

Source	df	SS	MS	Pseudo-F	P(perm)	Unique perms	Estim. of comp. of variation
Ca	1	10490	10490	48.268	0.0021	9826	285.89
WD	1	8657.3	8657.3	39.836	0.0024	9839	222.89
SD	4	23748	5936.9	5.474	0.0001	9879	415.91
CaxWD	1	12637	12637	58.148	0.0024	9852	719.38
CaxSD	4	7691.4	1922.8	17.729	0.0001	9832	143.7
WDxSD	4	6383.9	1596	14.715	0.0097	9826	87.671
Co(CaxWD)	8	17434	2179.2	20.093	0.0001	9788	224.54
CaxWDxSD	4	8270.4	2067.6	19.064	0.0003	9832	337.04
Res	31	33621	1084.6				1084.6
Total	58	1.30E+05

PERMANOVA full 4-factor model test for differences between canyon areas (Ca: Gollum and Whittard), water depths (WD: 700 and 1000 m), sediment depths (SD: 1, 2, 3, 4, 5 cm), cores (Co: 1–12), and interaction terms. Bold italic values indicate significant differences at p <0.01. Data was standardised and square root transformed; resemblance was calculated using Bray-Curtis.