Table 2.

Geochemical data (including samples not sequenced).

			Mg	Mn	Si	pH	Sulfide	CH4
Dive	Niskin	Sample type	mmol/kg	micromol/kg	micromol/kg		micromolar	nmoles/liter
DR-261	Niskin 7	seawater	51.38	0.04	97.60	7.54	0.00	0.53
DR-261	Niskin 5	seawater	51.60	0.03	67.90	nm	0.00	0.57
DR-261	Niskin 6	seawater	51.49	0.00	86.60	nm	0.00	0.57
DR-261	Niskin 8	seawater	nm	nm	nm	nm	nm	0.53
		Seawater average	51.49	0.02	84.03	7.38	0.00	0.55
		Seawater St. Err.	0.06	0.01	8.67		0.00	0.01
		Seawater n	3	3	3	1	3	4
ESP upcast	ESP upcast	Intra-field	50.61	0.98	120.70	7.21	0.00	nm
ESP upcast	ESP upcast	Intra-field	50.94	0.93	119.60	nm	0.00	nm
DR-258	Niskin 5	Intra-field	50.72	0.19	97.60	7.63	0.00	29.84
DR-259	Niskin 5	Intra-field	nm	nm	nm	nm	nm	4.79
DR-259	Niskin 6	Intra-field	nm	nm	nm	nm	nm	7.48
DR-259	Niskin 7	Intra-field	nm	nm	nm	7.65	0.00	26.82
DR-259	Niskin 8	Intra-field	nm	nm	nm	7.51	0.00	25.13
DR-254	Niskin 8	Intra-field	nm	nm	nm	nm	nm	13.31
DR-252	Niskin 5	Intra-field	nm	nm	nm	nm	nm	10.12
DR-254	Niskin 5	Intra-field	nm	nm	nm	nm	nm	46.20
DR-257	Niskin 5	Intra-field	51.16	0.07	92.10	7.58	0.00	32.47
		Intra-field ave	50.86	0.54	107.50	7.52	0.00	21.80
		Intra-field St. Err.	0.16	0.04	1.94	0.03	0.00	4.58
		Intra-field n	4	4	4	5	6	9
DR-257	Niskin 7	diffuse	51.27	0.15	85.50	7.52	0.00	19.25
DR-258	Niskin 6	diffuse	50.06	4.74	252.70	6.59	36.73	1398.30
DR-258	Niskin 7	diffuse	50.72	8.65	367.10	6.25	90.61	2558.96
DR-258	Niskin 8	diffuse	50.28	2.72	169.10	7.33	10.81	179.51
DR-254	Niskin 7	diffuse	nm	nm	nm	nm	nm	120.91
DR-252	Niskin 6	diffuse	nm	nm	nm	nm	nm	638.99
DR-252	Niskin 7	diffuse	nm	nm	nm	nm	nm	657.19
DR-252	Niskin 8	diffuse	nm	nm	nm	nm	nm	383.84
DR-257	Niskin 8	diffuse	nm	nm	nm	nm	nm	62.57
		Diffuse average	50.58	4.06	218.60	6.92	34.54	668.84
		Diffuse St. Err.	0.27	1.79	60.13	0.30	20.22	276.79
		Diffuse n	4	4	4	4	4	9

Mg, Mn, and Si represent total elemental concentration. Nm, not measured. Shaded rows represent summary data for each habitat type.