Biomass Compilation for Herbaceous Systems — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

This is a combination of the crop biomass, cover crop and non-crop biomass tables to provide a consolidated view of the annual biomass production in the herbaceous cropping systems.

For data from the non-crop biomass harvest the category “Surface Litter” has been removed for this table. The category ‘Standing Dead’ is included. “Standing Dead” (standing dead plants of indeterminate species) was first sampled in 1997. The standing dead designation is for plants that grew this year but had senesced and were unidentifiable at harvest. From 1999 to 2011 this category may also include plant scraps that were unidentified after the plants were sorted to species in the field lab.

This datatable is part of the Annual Net Primary Production on the Main Cropping System Experiment dataset.

Aboveground annual net primary production (ANPP) has been measured on the LTER main site since 1990 and on the successional and forested sites since 1993. ANPP is measured at peak biomass for a given treatment. In some systems with multiple harvests or complex communities that have peaks occurring at different times of the year, measurements are taken at multiple times per year. Additional ANPP measurements are made where appropriate using leaf litter traps, estimates of diameter from tree basal diameter and for the poplar treatment occasional destructive harvests. See the ANPP protocol for descriptions of the sampling and measurement methods for each of the treatments.


Experiment: Main Cropping System Experiment (MCSE)
Data available from: January 1990 to December 2022
Dataset: KBS019
Datatable ID: KBS019-021.123
Core Areas Primary Production,Populations,Disturbance
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Last Updated 2023-10-24
Variate Description Units
Year sample year
Campaign sampling campaign
Date date the sample was collected
Treatment treatment of the sampled plot
Replicate replicate of the sampled plot
Station sampling station within the plot
Species species collected
Fraction plant fraction collected (WHOLE, SEED, VEG)
Biomass g measured biomass in grams per meter squared g/m2

Data Excerpt

year campaign date treatment replicate station species fraction biomass_g
2022 Peak Biomass 2022-08-15 T7 R1 S1 Achillea millefolium L. WHOLE 80.86
2022 Peak Biomass 2022-08-15 T7 R1 S1 Dactylis glomerata L. WHOLE 77.59
2022 Peak Biomass 2022-08-15 T7 R1 S1 Erigeron annuus (L.) Pers. WHOLE 4.56
2022 Peak Biomass 2022-08-15 T7 R1 S1 Euthamia graminifolia (L.) Nutt. WHOLE 97.59
2022 Peak Biomass 2022-08-15 T7 R1 S1 Hieracium sp. (*) WHOLE 2.4
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