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- W1996940137 endingPage "699" @default.
- W1996940137 startingPage "699" @default.
- W1996940137 abstract "This paper reviews a growing body of literature on the use of variations in the natural abundance of 15N to estimate the fractional contribution of N2-fixation to N2-fixing systems. This method is based on the small difference in 15NN abundance which frequently occurs between N derived from N2-fixation and N derived from other sources. The requirement of the method is that this difference be significant. Whether this requirement is met is site specific and must be empirically established at each site of interest. Advantages and disadvantages of this method are compared with those of more conventional methods. Sources of error, including heterogeneity of 15NN abundance of non-atmospheric N sources are considered. Tests of the method, under both greenhouse and field conditions, are described. Estimates based on this method compare favourably with other methods for field evaluation of N2-fixation, provided that the site and the sampling strategy are appropriate for application of the method. Applications of the method in several ecosystems are described." @default.
- W1996940137 created "2016-06-24" @default.
- W1996940137 creator A5040521872 @default.
- W1996940137 creator A5054301637 @default.
- W1996940137 date "1986-01-01" @default.
- W1996940137 modified "2023-10-14" @default.
- W1996940137 title "N2-Fixation in Field Settings: Estimations Based on Natural 15N Abundance" @default.
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