. 2018 May 16;8:7619. doi: 10.1038/s41598-018-25989-2

Table 2.

DistLM results for all macrofauna densities and biomasses and bioturbation parameters as predictors of the solutes, and all macrofauna as predictors of the different bioturbation measures.

Available predictors	Response	Selection procedure	Selected predictors	AIC	Pseudo-F	P	Prop.	Cum-R²	Correlation with dbRDA-axis
Macrofauna + bioturbation	NO_x	Sequential (forward)	Bioirrigation	194.60	3.88	0.06	0.17	0.17	−
Macrofauna + bioturbation	NO_x	Sequential (forward)	Hediste biomass	193.23	3.13	0.10	0.12	0.29	+
Macrofauna + bioturbation	NH₄⁺	Sequential (forward)	M. arctia density	245.07	20.95	0.00	0.52	0.52	−
Macrofauna + bioturbation	PO₄³⁻	Sequential (forward)	Cerastoderma biomass	−11.03	8.07	0.01	0.30	0.30	+
			D_b^N	−11.76	2.50	0.13	0.09	0.38	−
			M. neg+vir density	−13.53	3.34	0.09	0.10	0.48	+
Macrofauna+bioturbation	Si⁴⁺	Sequential (forward)	Cerastoderma biomass	297.19	12.55	0.00	0.40	0.40	−
			M. neg+vir density	296.44	2.51	0.13	0.07	0.47	−
			MPD	296.22	1.90	0.18	0.05	0.52	−
Macrofauna	MPD	Sequential (forward)	Hediste biomass	−8.12	10.12	0.01	0.35	0.35	+
			Macoma biomass	−10.67	4.35	0.06	0.13	0.47	+
			Marenzelleria biomass	−12.46	3.36	0.08	0.09	0.56	+
Macrofauna	SR	Sequential (forward)	Marenzelleria biomass	−106.09	12.14	0.002	0.39	0.39	+
Macrofauna	D_b^N	Sequential (forward)	Marenzelleria biomass	−20.68	2.92	0.11	0.13	0.13	+
			Hediste biomass	−21.50	2.59	0.12	0.11	0.24	+
			Macoma biomass	−22.13	2.27	0.15	0.09	0.33	+
Macrofauna	Bioirrigation	Sequential (forward)	Marenzelleria biomass	144.07	14.57	0.00	0.43	0.43	+
			M. arctia density	141.86	4.00	0.06	0.10	0.54	+
			Cerastoderma biomass	140.97	2.51	0.13	0.06	0.60	+

D_b^N = biodiffusion coefficient, SR = % of surface reworked, MPD = maximum penetration depth, BI = bioirrigation. Macrofauna includes M. arctia, M. neglecta and M. viridis density, Marenzelleria spp. biomass, M. balthica biomass, C. glaucum biomass and H. diversicolor biomass.