Table 1.

Mussel biomass and excretion rates used to estimate nitrogen and phosphorus recycling rates and storage

Species	Mean soft tissue dry mass (g/m2)						Ammonium excretion (μg L /h/g)			Phosphate excretion (μg L /h/g)			Clearance rate (L/h/g)
	Upstream sites			Downstream sites
	1991	2003	2011	1991	2003	2011	15°	25°	35°	15°	25°	35°	15°	25°	35°
Actinonaias ligamentina	21.00	6.47	0.00	55.08	23.45	38.19	0.479	1.019	1.636	0.261	0.269	0.410	0.452	3.210	2.363
Amblema plicata	21.31	5.21	11.68	31.35	12.80	10.31	0.248	0.556	0.766	0.206	0.229	0.211	0.612	1.211	3.572
Ellipsaria lineolata	0.00	0.00	0.00	2.62	11.19	2.61	0.366	0.909	1.362	0.239	0.298	0.359	1.000	3.600	6.600
Fusconaia flava	3.05	0.78	0.26	3.65	1.51	0.21	0.230	0.829	0.913	0.204	0.326	0.229	0.709	3.423	7.475
Lampsilis cardium	7.70	5.89	1.61	4.42	7.49	1.62	0.578	0.988	2.389	0.299	0.539	0.534	1.810	4.707	2.343
Lampsilis teres	0.41	1.83	1.09	0.00	0.00	0.00	0.366	0.909	1.362	0.239	0.298	0.359	1.000	3.600	6.600
Obliquaria reflexa	0.25	0.00	0.00	0.76	0.00	0.38	0.216	1.041	1.376	0.208	0.200	0.220	0.694	4.010	9.587
Potamilus purpuratus	0.58	0.00	0.00	0.93	13.58	2.11	0.366	0.909	1.362	0.239	0.298	0.359	1.000	3.600	6.600
Ptychobranchus occidentalis	0.25	2.38	0.54	0.32	0.00	0.00	0.366	0.909	1.362	0.239	0.298	0.359	1.000	3.600	6.600
Quadrula pustulosa	5.49	0.75	0.00	9.13	2.38	0.63	0.167	0.757	1.362	0.186	0.305	0.534	2.224	4.989	15.451
Tritogonia verrucosa	3.94	1.04	0.41	1.64	0.00	0.74	0.784	0.936	1.572	0.239	0.298	0.359	1.000	3.600	6.600
Truncilla truncata	0.21	0.00	0.00	0.43	1.23	0.19	0.340	1.041	1.077	0.294	0.311	0.389	0.911	7.603	7.614