. 2011 May 12;5(11):1796–1808. doi: 10.1038/ismej.2011.58

Table 1. In situ conditions for the starting material for North Pacific Ocean seawater enrichments used for archaeal kinetic isotope fractionation (¹⁵ɛ_NH3) determination.

Enrichment	Depth (m)	Temp (°C)	[NH₄⁺] (nmol l⁻¹)	[NO₃⁻] (μmol l⁻¹)
CN25	25	14	40	0.5
CN75	75	12	<15	2.2
CN150	150	10	<15	15.1

Table 1. In situ conditions for the starting material for North Pacific Ocean seawater enrichments used for archaeal kinetic isotope fractionation (15ɛNH3) determination.