Euphoric zone nitrification

Dore,. E., and Karl, D. M. (1996). Nitrification in the euphoric zone as a source for nitrite, nitrate, and nitrous oxide at station ALOHA. Limnology and Oceanography 41, 1619—1628. 

Dore, J. E. (1995). Microbial Nitrification in the Marine Euphoric Zone Rates and Relationships with Nitrite Distributions, Recycled Production and Nitrous Oxide Generation, Ph.D. Dissertation. University of Hawaii, Honolulu. 

Marine nitrifying bacteria, especially the N02 oxidizers are ubiquitous in the world ocean and key to the regeneration of NOs, which dominates waters below the well-illuminated, euphoric zone. However they are never very abundant and, at least for those species in culture, grow very slowly. Certain heterotrophic bacteria can also oxidize NH4" " to both N02 and N03 during metabolism of preformed organic matter. However, very little is known about the potential for heterotrophic nitrification in the sea. 

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