Table 3.

Sponge wet weight biomass estimated by the modelling approach and estimates of ecosystem functions in four NAFO Divisions.

Area	Biomass (t)	Filtration (x 106 litre day−1)	Respiration (t O2 day−1)	Carbon consumption (t C day−1)	NH4+ (t day−1)	NO2− (t day−1)	NO3− release (t day−1)
3L - Flemish Pass	28 060	6 816 ± 1 827	6.90 ± 1.29	7.66 ± 1.44	0.002 ± 0.001	0.049 ± 0.016	0.79 ± 0.19
3M - Flemish Cap	147 837	35 910 ± 9 624	36.33 ± 6.81	40.37 ± 7.57	0.013 ± 0.003	0.259 ± 0.086	4.16 ± 1.00
3N - Tail of the Bank	51 543	12 520 ± 3 355	12.67 ± 2.37	14.07 ± 2.64	0.005 ± 0.001	0.090 ± 0.030	1.45 ± 0.35
3O -	3 696	898 ± 241	0.91 ± 0.17	1.01 ± 0.19	0.000 ± 0.000	0.006 ± 0.002	0.10 ± 0.03
Total	231 136	56 143 ± 15 047	56.80 ± 10.65	63.11 ± 11.83	0.020 ± 0.005	0.406 ± 0.135	6.50 ± 1.57