Affiliation:
1. Ocean Research Institute, University of Tokyo, Nakano, Tokyo 164, Japan
Abstract
Simultaneous determinations of nitrogen gas production, ammonia, and particulate organic nitrogen formation in the coastal sediments of Mangoku-Ura, Simoda Bay, and Tokyo Bay were made by using the
15
N-label tracer method. The rate of nitrogen gas production in the sediment surface layer was about 10
−2
μg atom of N per g per h, irrespective of the location of the sediments examined. [
15
N]ammonia and -particulate organic nitrogen accounted for 20 to 70% of the three products, and after several hours of incubation, the major fraction of nondenitrified
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N in Mangoku-Ura and Simoda Bay sediments was recovered as ammonia. In Tokyo Bay sediments, particulate organic nitrogen was produced at a greater rate than was ammonia. The reduction rate data suggest that the pathway of nitrate reduction to ammonia is important in coastal sediments.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Cited by
202 articles.
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