Table 2.

Depth-integrated (0 to 45 m) rates of N₂ fixation as measured by ¹⁵N₂ assimilation by adding the ¹⁵N₂ gas in dissolved and bubble form^a

Date	Mode of incubation	15N2 assimilation rate (μmol of N m−2 day−1)
		Bubble	Dissolved
20 July 2011	Array	82	150
20 July 2011	Incubator	87	198
30 Aug 2011	Array	104	195
29 Sept 2011	Incubator	59	206

^aThe seawater samples were incubated either using an in situ array or in a shipboard incubator.