Table 3. Oxygen consumption rates, ammonium excretion rates, and O:N ratios of Sinonovacula constricta after one week of exposure to the ambient control, ~80 or ~100 dB re 1 μPa of underwater sounds (mean  ±  SE) (Different superscripts indicate significant differences between trials by Tukey’s test).

Measurements	Experimental trials			p-value
	Ambient control	~80dB re 1 μPa	~100dB re 1 μPa
oxygen consumption rate (mg/g·h)	0.88 ± 0.08	1.04 ± 0.06	0.89 ± 0.06	0.21
ammonium excretion rate (μmol/g·h)	8.63 ± 1.02	9.28 ± 0.75	9.99 ± 0.83	0.56
O:N ratio	6.51 ± 0.13ab	7.40 ± 0.19a	5.72 ± 0.37b	0.01