Elevated δ<sup>15</sup>N Linked to Inhibited Nitrification Coupled to Ammonia Volatilization in Sediments of Shallow Alkaline-Hypersaline Lakes.

North Stromatolite is the only other system to consistently display δ 15 N > 11‰ (mean = 11.9‰, n = 15, σ = 1.6‰), with an apparent trend that starts at 9.0‰ and increases with depth until reaching 14.0‰ at 14–16 cm before descending back to 9.5‰ at the bottom of the core.

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