HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Keeney, D. R. Search for Related Content PubMed Articles by Keeney, D. R. GeoRef GeoRef Citation Agricola Articles by Keeney, D. R.

The Nitrogen Cycle in Sediment-Water Systems¹

ABSTRACT

The available literature on the fate of nitrogen in waters and sediments is reviewed. Emphasis is placed on the importance of N to aquatic productivity, the pathways leading to N gains or losses in aquatic ecosystems, and the availability of N in sediments to the overlying waters. Important biological reactions include N mineralization and immobilization, nitrification and denitrification, and N fixation. The effect of sediment properties, lake morphology and environmental factors (pH, temperature, dissolved oxygen, oxidation-reduction potential) on the pathways and rates of turnover are considered. The mixing process in sediments appear to be the most important in releasing sediment-N to waters. Several facets of the N cycle in waters and sediments require further elucidation. Research needs are outlined.

Key Words: nitrification • denitrification • eutrophication

¹ Research supported by the Col. of Agricultural and Life Sciences and by research grants from the Federal Water Quality Adm. No. 16010 EHR and the Eastern Deciduous Forest Biome Proj., International Biological Prog., National Science Foundation subcontract 3351, under Interagency Agreement AG-199, 40-193-69 with the Atomic Energy Comm., Oak Ridge National Lab. Paper presented Aug. 18, 1971, in New York City at the annual meeting of the ASA as part of the Division S-2 symposium "Sediments and Water Quality."

² Associate Professor, Dep. of Soil Science, Univ. of Wisconsin, Madison 53706.

Received for publication June 24, 1971.

This article has been cited by other articles:

				R. Kroger, M. M. Holland, M. T. Moore, and C. M. Cooper Hydrological Variability and Agricultural Drainage Ditch Inorganic Nitrogen Reduction Capacity J. Environ. Qual., October 16, 2007; 36(6): 1646 - 1652. [Abstract] [Full Text] [PDF]

				S. S.S. Lau and S. N. Lane Continuity and change in environmental systems: the case of shallow lake ecosystems Progress in Physical Geography, June 1, 2001; 25(2): 178 - 202. [Abstract] [PDF]