Soil Inorganic Nitrogen - Early Successional Microplots

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Inorganic nitrogen concentrations of ammonia and nitrate in soils of the fertilization and disturbance microplots on the LTER Early Successional treatment (T7).

This datatable is part of the Plant Community and Ecosystem Responses to Long-term Fertilization & Disturbance dataset. This work is part of the long-term sampling and monitoring of successional dynamics in abandoned fields – and responses to N-fertilization. Data from this research has been, and will continue to, contribute to LTER cross-site analysis of plant community dynamics, diversity-productivity, and responses to fertilization and disturbance.

N-fertilized and tilled (disturbed) microplots are located in the NW corner of all treatment 7 (early successional communities) on the LTER main site.

 Experimental treatments are:
1) Nitrogen addition vs. no nitrogen addition and 2) Annual disturbance vs. undisturbed


Experiment: Main Cropping System Experiment (MCSE)
Data available from: April 1996 to October 2011
Dataset: KBS055
Datatable ID: KBS055-002.29
Core Areas Inorganic Nutrients,Disturbance
Repository link:
Related Tables:
Last Updated 2020-07-10
Variate Description Units
sample date collection date of the sample
Year year the sample is assigned to
treatment Main Site treatment that the microplot is located in
replicate Main Site replicate that microplot is located in
plot id plot ID that the sample was collected from
disturbed indicates whether the plot is tilled (true) or not (false)
fertilized indicates whether the plot is fertilized (true) or not (false)
moisture percent soil moisture of the sample in percent (w/w) %
nh4 n ug g ammonium N content of the sample (micro grams NH4-N per gram of soil) μg/g
no3 n ug g nitrate N content of the sample (micro grams NO3-N per gram of soil) μg/g

Data Excerpt

sample_date year treatment replicate plot_id disturbed fertilized moisture_percent nh4_n_ug_g no3_n_ug_g
2011-10-03 2011 T7 R6 6711 true true 18.18 11.8 7.14
2011-10-03 2011 T7 R6 6710 true false 20.09 2.96 0.3
2011-10-03 2011 T7 R6 6701 false true 19.69 5.06 1.22
2011-10-03 2011 T7 R6 6700 false false 19.23 5.96 0.06
2011-10-03 2011 T7 R5 5711 true true 19.29 2.78 3.75
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