Simultaneous determinations of nitrification and nitrate reduction in coastal sediments by a 15N dilution technique
- 1 May 1978
- journal article
- research article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 35 (5), 853-857
- https://doi.org/10.1128/aem.35.5.853-857.1978
Abstract
Nitrification, the oxidation of ammonia to nitrite and nitrate, and nitrate reduction by bacteria in coastal sediments of Mangoku-Ura and Odawa Bay were simultaneously determined by a 15N dilution technique. In muddy sediments of Mangoku-Ura, nitrate reduction proceeded at a rate of 10(-2) to 10 X 10(-2) microgram-atoms of N/g per h. Nitrification was far less intensive. Denitrification, or N2 production from nitrate, accounted for about 30% of the nitrate reduction. A simultaneous occurrence of nitrification and nitrate reduction with a similar rate of 10(-2) microgram-atoms of N/g per h was demonstrated in sandy sediment collected from a Zostera bed of Odawa Bay.This publication has 2 references indexed in Scilit:
- Denitrification and Ammonia Formation in Anaerobic Coastal SedimentsApplied and Environmental Microbiology, 1978
- Method for in situ measurement of nitrification in a stream.1974