Seed Bank via Direct Germination — 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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Number of seedlings, by plant species, germinating from soils of MCSE Treatments 1-4 and 7. Soil cores were separated into 0-5 and 5-15 cm depth intervals and the weed seed bank analyzed by direct germination: seeds were allowed to germinate and the number of seedlings are counted and identified.
This datatable is part of the Seed Bank Distribution and Composition dataset.
This dataset contain the distribution and composition of the soil weed seed bank in Treatments 1-8 of the Main Cropping System Experiment (MCSE) at the LTER Main Site. The weed seed bank was periodically (every 3-6 years) evaluated using elutriation and germination seed counting methods. Composite soil samples to two depths were elutriated to determine seed densities, species composition, and viabilities of seven dominant target species on the site. The goal of this study was to determine:
- how well the seed bank predicts weed abundances and composition in subsequent years, and
- how changes in disturbance (tillage) and plant species (cropping systems) affect the bank.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | May 1993 to May 2002 |
| Dataset: | KBS006 |
| Datatable ID: | KBS006-001.31 |
| Core Areas | Populations,Disturbance |
| Repository link: | http://doi.org/10.6073/pasta/c376065b1f83da0c335ca1091edf0491 |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-10-24 |
| Variate | Description | Units |
|---|---|---|
| sample date | date the sample was taken from the field | |
| treatment | treatment that the sample was drawn from | |
| replicate | replicate (block) that the sample was drawn from | |
| station | station the sample was drawn from | |
| depth | depth that was sampled in cm | |
| cores | number of soil cores taken | |
| sample divided | Indicates if the sample was split prior to processing | |
| surface area examined sq cm | surface area that was examined in cm^2 | |
| ridge or furrow | indicates if the sample came from a ridge or furrow location as indicated by 'R' and 'F' or from a mixed sample as indicated by a blank. | |
| species | species that was found | |
| number of seeds | number of seeds that were found by direct germination | |
| volume examined cu cm | soil volume that was examined | cm^3 |
Data Excerpt
| sample_date | treatment | replicate | station | depth | cores | sample_divided | surface_area_examined_sq_cm | ridge_or_furrow | species | number_of_seeds | volume_examined_cu_cm |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2002-05-20 | T1 | R1 | S1 | 0-5 cm | 20 | true | 28.35 | Digitaria sanguinalis (L.) Scop. | 1 | 141.75 | |
| 2002-05-20 | T1 | R1 | S2 | 0-5 cm | 20 | true | 28.35 | Poa compressa L. | 9 | 141.75 | |
| 2002-05-20 | T1 | R1 | S2 | 0-5 cm | 20 | true | 28.35 | Digitaria sanguinalis (L.) Scop. | 1 | 141.75 | |
| 2002-05-20 | T1 | R1 | S2 | 0-5 cm | 20 | true | 28.35 | Stellaria media (L.) Vill. | 1 | 141.75 | |
| 2002-05-20 | T1 | R1 | S3 | 0-5 cm | 20 | true | 28.35 | Digitaria sanguinalis (L.) Scop. | 1 | 141.75 |