| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
ABSTRACT
The spatial variability exhibited by soil denitrification rates is high. As is typical for natural denitrification rate measurements, the individual rates of most samples of a given data set are low; however, a few samples often exhibit extremely high rates. Such data are characterized by highly skewed sample frequency distributions. This study was initiated to investigate the underlying mechanisms responsible for these observations. It was found that "hot-spots" of high specific denitrification activity were associated with particulate organic C material in the soil. The high specific activities of these hot-spots (incubated under aerobic conditions with no amendments) were similar to the denitrification activity of the bulk soil measured under conditions of anaerobiosis with added glucose and NO3. This observation served as the basis of a computer model that evaluates the influence of the density and dispersion pattern of these high activity sites on the measured rates of denitrification. Histograms generated from computer simulations are very similar to histograms obtained for real data, supporting the concept that the patchy dispersion of particulate organic material in soil is a major factor influencing the variability of natural denitrification rates.
1 Contribution from the USDA Soil Nitrogen and Environmental Chemistry Lab., Beltsville Agric. Res. Ctr., Beltsville, MD. 20705.
2 Research Microbiologist, USDA, Soil Nitrogen and Environmental Chemistry Lab., Beltsville Agric. Res. Ctr. Beltsville, MD 20705.
Received for publication September 22, 1986.
This article has been cited by other articles:
|
|
 |
|
  F. P. Vinther, U. C. Brinch, L. Elsgaard, L. Fredslund, B.V. Iversen, S. Torp, and C. S. Jacobsen Field-Scale Variation in Microbial Activity and Soil Properties in Relation to Mineralization and Sorption of Pesticides in a Sandy Soil J. Environ. Qual., August 8, 2008; 37(5): 1710 - 1718. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. Sugita and K. Nakane Combined Effects of Rainfall Patterns and Porous Media Properties on Nitrate Leaching Vadose Zone J., August 23, 2007; 6(3): 548 - 553. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. J. Bremer Nitrous Oxide Fluxes in Turfgrass: Effects of Nitrogen Fertilization Rates and Types J. Environ. Qual., August 9, 2006; 35(5): 1678 - 1685. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. T. Yates, B. C. Si, R. E. Farrell, and D. J. Pennock Wavelet Spectra of Nitrous Oxide Emission from Hummocky Terrain during Spring Snowmelt Soil Sci. Soc. Am. J., May 23, 2006; 70(4): 1110 - 1120. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. T. Yates, B. C. Si, R. E. Farrell, and D. J. Pennock Probability Distribution and Spatial Dependence of Nitrous Oxide Emission: Temporal Change in Hummocky Terrain Soil Sci. Soc. Am. J., March 29, 2006; 70(3): 753 - 762. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. Vieuble Gonod, J. Chadoeuf, and C. Chenu Spatial Distribution of Microbial 2,4-Dichlorophenoxy Acetic Acid Mineralization from Field to Microhabitat Scales Soil Sci. Soc. Am. J., December 2, 2005; 70(1): 64 - 71. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. J. Hayden and D. S. Ross Denitrification as a Nitrogen Removal Mechanism in a Vermont Peatland J. Environ. Qual., October 12, 2005; 34(6): 2052 - 2061. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. A. Schipper, G. F. Barkle, and M. Vojvodic-Vukovic Maximum Rates of Nitrate Removal in a Denitrification Wall J. Environ. Qual., July 5, 2005; 34(4): 1270 - 1276. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. A. Holden and N. Fierer Microbial Processes in the Vadose Zone Vadose Zone J., February 1, 2005; 4(1): 1 - 21. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. Delorme, L. Philippot, V. Edel-Hermann, C. Deulvot, C. Mougel, and P. Lemanceau Comparative Genetic Diversity of the narG, nosZ, and 16S rRNA Genes in Fluorescent Pseudomonads Appl. Envir. Microbiol., February 1, 2003; 69(2): 1004 - 1012. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. K. Tipton, D. E. Rolston, and K. M. Scow Transport and Biodegradation of Perchlorate in Soils J. Environ. Qual., January 1, 2003; 32(1): 40 - 46. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Wulf, M. Maeting, and J. Clemens Application Technique and Slurry Co-Fermentation Effects on Ammonia, Nitrous Oxide, and Methane Emissions after Spreading: II. Greenhouse Gas Emissions J. Environ. Qual., November 1, 2002; 31(6): 1795 - 1801. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. B. Cliff, D. J. Gaspar, P. J. Bottomley, and D. D. Myrold Exploration of Inorganic C and N Assimilation by Soil Microbes with Time-of-Flight Secondary Ion Mass Spectrometry Appl. Envir. Microbiol., August 1, 2002; 68(8): 4067 - 4073. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Addy, D. Q. Kellogg, A. J. Gold, P. M. Groffman, G. Ferendo, and C. Sawyer In Situ Push-Pull Method to Determine Ground Water Denitrification in Riparian Zones J. Environ. Qual., May 1, 2002; 31(3): 1017 - 1024. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.-C. Clement, G. Pinay, and P. Marmonier Seasonal Dynamics of Denitrification along Topohydrosequences in Three Different Riparian Wetlands J. Environ. Qual., May 1, 2002; 31(3): 1025 - 1037. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. L. Meyer, T. Kjaer, and N. P. Revsbech Nitrification and Denitrification near a Soil-Manure Interface Studied with a Nitrate-Nitrite Biosensor Soil Sci. Soc. Am. J., March 1, 2002; 66(2): 498 - 506. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. L. Grundmann, A. Dechesne, F. Bartoli, J. P. Flandrois, J. L. Chasse, and R. Kizungu Spatial Modeling of Nitrifier Microhabitats in Soil Soil Sci. Soc. Am. J., November 1, 2001; 65(6): 1709 - 1716. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. G. Hunter and S. P. Faulkner Denitrification Potentials in Restored and Natural Bottomland Hardwood Wetlands Soil Sci. Soc. Am. J., November 1, 2001; 65(6): 1865 - 1872. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S.O. Petersen, K. Kristensen, and J. Eriksen Denitrification Losses from Outdoor Piglet Production: Spatial and Temporal Variability J. Environ. Qual., May 1, 2001; 30(3): 1051 - 1058. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D.J. McKenney, C.F. Drury, and S.W. Wang Effects of Oxygen on Denitrification Inhibition, Repression, and Derepression in Soil Columns Soil Sci. Soc. Am. J., January 1, 2001; 65(1): 126 - 132. [Abstract] [Full Text]
|
|
|
|
|
|
D. J. Scala and L. J. Kerkhof Horizontal Heterogeneity of Denitrifying Bacterial Communities in Marine Sediments by Terminal Restriction Fragment Length Polymorphism Analysis Appl. Envir. Microbiol., May 1, 2000; 66(5): 1980 - 1986. [Abstract] [Full Text]
|
|
|
|
|
|
R.N. Malpassi, T.C. Kaspar, T.B. Parkin, C.A. Cambardella, and N.A. Nubel Oat and Rye Root Decomposition Effects on Nitrogen Mineralization Soil Sci. Soc. Am. J., January 1, 2000; 64(1): 208 - 215. [Abstract] [Full Text]
|
|
|
|
|
|
F. Hagedorn, J. Mohn, P. Schleppi, and H. Fluhler The Role of Rapid Flow Paths for Nitrogen Transformation in a Forest Soil: A Field Study with Micro Suction Cups Soil Sci. Soc. Am. J., November 1, 1999; 63(6): 1915 - 1923. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.R. White and K.R. Reddy Influence of Nitrate and Phosphorus Loading on Denitrifying Enzyme Activity in Everglades Wetland Soils Soil Sci. Soc. Am. J., November 1, 1999; 63(6): 1945 - 1954. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Crop Science | |||
| Journal of Natural Resources and Life Sciences Education |
Vadose Zone Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
