Table 1. Metadata for stations sampled in the ARP.

Measurements taken in conjunction with the metatranscriptomes are listed here. Asterisks highlight where concentration of the variable was below limit of detection.

Station	Latitude	Longitude	Date Sampled	Salinity	Sea Surface Temperature (°C)	Mean Phosphate (μM)	Mean Silica (μM)	Mean NO3 + NO2	CTD Beam Transmittance	DIC	Diatom Microscope Count (cells/L)	Hemialius Microscope Count (cells/L)	Chl (μg/L)
2	10.29 N	54.51 W	5/25/10	31.362	28.87	0.11	7.34	0*	89.20	1802	165,935	164,531	3.251
3	7.29 N	53.00 W	5/26/10	30.086	28.96	0.19	17.03	0*	92.37	1846	125,962	1,049	0.580
10	4.88 N	51.36 W	6/5/10	21.721	29.61	0.39	38.48	0.188	46.12	1372	6,940,996	0*	36.107
23	10.62 N	54.40 W	6/16/10	26.177	29.51	0.37	26.33	0*	93.81	1575	26,322	3,210	0.150
25	11.32 N	56.43 W	6/18/10	31.310	29.43	0*	2.81	0*	85.83	1774	372,113	371,000	5.250
27	12.41 N	52.22 W	6/21/10	35.311	28.65	0.27	1.23	0*	95.03	1992	1,608	402	0.129