Nematode Density of MCSE Baseline Study — Main Cropping System Experiment (MCSE)

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Population counts, by feeding group, of nematodes in surface soils (0-15 cm) sampled in 1988 at an array of geo-referenced points across the LTER Main Site prior to establishment of the MCSE.

These data are summarized in the following publication:
Robertson, G. P. and D. W. Freckman. 1995. The spatial distribution of nematode trophic groups across a cultivated ecosystem. Ecology 76:1425-1432.

This datatable is part of the Baseline Spatial Variability Study—Main Cropping System Experiment dataset. This dataset contains the results of a spatial variability study conducted across the KBS LTER Main Site (48 ha) prior to establishment of the 1-ha treatment plots of the Main Cropping System Experiment (MCSE). During the 1988 growing season, the site was uniformly planted to a single variety of soybeans and a stratified unaligned sampling scheme was used to collect 400-600 geo-referenced samples across the site. Samples were analyzed for:

  1. geomorphology (elevation, soil bulk density and texture);
  2. soil chemistry (moisture, pH, inorganic N, total C and N);
  3. soil biology (microbial biomass C, respiration, and population size; N mineralization potentials; nematode counts by feeding type; seed bank);
  4. primary production (soybean biomass, soybean C and N).

Most soil samples (0-15 cm) were taken before crop emergence; plant biomass samples were taken at physiological maturity. Dried soil and plant samples were archived for potential future analysis.

Data in this dataset are summarized in the publication:
Robertson, G. P., K. M. Klingensmith, M. J. Klug, E. A. Paul, J. R. Crum, and B. G. Ellis. 1997. Soil resources, microbial activity, and primary production across an agricultural ecosystem. Ecological Applications 7:158-170.[0158:SRMAAP]2.0.CO;2


Experiment: Main Cropping System Experiment (MCSE)
Data available from: January 1988
Dataset: KBS003
Datatable ID: KBS003-005.74
Core Areas Populations,Disturbance
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Last Updated 2023-08-31
Variate Description Units
year year of the observation
easting easting of the sample location in UTM 16N
northing northing of the sample location in UTM 16N
fungivorus nematodes m2 number of fungivorus nematodes per square meter
bacteriovorus nematodes m2 number of bacteriovorus nematodes per square meter
omnivorus predacious nematodes m2 number of omnivorous/predaceous nematodes per square meter
plant parasitic nematodes m2 number of plant parasitic nematodes per square meter
total nematodes m2 number of total nematodes per square meter

Data Excerpt

year easting northing fungivorus_nematodes_m2 bacteriovorus_nematodes_m2 omnivorus_predacious_nematodes_m2 plant_parasitic_nematodes_m2 total_nematodes_m2
1988 633981 4696121 106236.0 318709.0 81721.0 40860.0 547527.0
1988 634280 4696128 456620.0 573429.0 42476.0 116809.0 1189335.0
1988 634081 4696127 48413.0 648739.0 125874.0 48413.0 871440.0
1988 633913 4696126 463998.0 263636.0 21091.0
1988 633914 4696128
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