Table 4. Results from univariate PERMANOVA analysis for differences in biomass.

Source	df	SS	MS	Pseudo-F	P(perm)	perms
Ca	1	200.88	200.88	31.914	0.027	261
WD	1	13.274	13.274	0.21089	0.605	258
CaxWD	1	30.117	30.117	47.848	0.096	263
Res	4	25.178	62.944
Total	7	257.5

PERMANOVA test for biomass data (µg dwt) 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. Data was fourth-root transformed; resemblance was calculated using Bray-Curtis. Bold values indicate significant differences at p <0.05.