Soil Moisture under Rainout Shelters — Switchgrass Nitrogen Fixation Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Soil moisture measured at two depths (10 and 25 cm) in surface soils under the rainfall exclusion shelters of the Switchgrass Nitrogen Fixation Experiment. Soils under shelters manually received rainfall on differing schedules.
This datatable is part of the Switchgrass Nitrogen Fixation Experiment dataset.
This dataset contains data from the Switchgrass Nitrogen Fixation Experiment established in 2016 after conversion of the historically tilled plots (1-16) of the Interactions Experiment from annual crops to switchgrass (Cave-in-rock). The experiment maintained the fertilizer treatment (fertilized and not fertilized) of the Interactions Experiment, but the tillage treatment was discontinued because switchgrass is a perennial crop that is not tilled. From 2018-2022, a rainout shelter experiment that also used buried mesocosms was conducted in the legacy no-till, no fertilizer plots (3, 6, 8, and 9) to examine the effect of soil wetting/drying regimes on the relationship between associative nitrogen fixation (ANF) and switchgrass phenology, diazotroph communities, and nifH expression. The experiment was retired after the 2022 growing season in order to establish the Switchgrass Biodiversity Experiment.
Note
Experiment: | Switchgrass Nitrogen Fixation Experiment |
Data available from: | June 2019 to May 2021 |
Dataset: | KBS152 |
Datatable ID: | KBS128-003.12 |
Core Areas | Disturbance |
Repository link: | |
Related Tables: | |
Personnel: |
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Last Updated | 2024-04-30 |
Variate | Description | Units |
---|---|---|
site | the experiment station | |
experiment | the name of the experiment | |
sample datetime utc | the time of sampling in UTC | |
plot | the plot sampled | |
depth | the sample depth cm | cm |
vwc | fractional volumetric water content | m^3/m^3 |
temperature | soil temperature | C |
ec | electrical conductivity | |
permittivity | ||
voltage ratio | Volt/Volt | |
sample id | sample id |
Protocols |
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Data Excerpt
site | experiment | sample_datetime_utc | plot | depth | vwc | ec | temperature | permittivity | voltage_ratio | sample_id |
---|---|---|---|---|---|---|---|---|---|---|
kbs | interactions | 2025-01-22 06:00:00 UTC | 8 | 25.0 | 0.317 | 0.038 | 0.87 | 17.82 | 1.046 | 4725583 |
kbs | interactions | 2025-01-22 06:00:00 UTC | 3 | 10.0 | 4725584 | |||||
kbs | interactions | 2025-01-22 06:00:00 UTC | 8 | 10.0 | 0.337 | 0.024 | 0.683 | 19.35 | 1.03 | 4725583 |
kbs | interactions | 2025-01-22 06:00:00 UTC | 8 | 25.0 | 0.316 | 0.039 | 0.985 | 17.72 | 1.048 | 4725583 |
kbs | interactions | 2025-01-22 06:00:00 UTC | 3 | 25.0 | 0.304 | 0.032 | 0.959 | 16.91 | 1.039 | 4725584 |