This data release includes soil properties for one sediment core taken in a tidal scrub-shrub wetland in Miner Slough, Sacramento-San Joaquin Delta, California. The dominant vegetation near the core collection area included Schoenoplectus acutus, Typha sp, and Cornus sericea. A Russian corer was used to collect one soil core and was analyzed for bulk density, fraction organic matter, and accretion rates using 137Cs analysis. Bulk density was measured by drying samples drawn with a 1 cc syringe plug at 80 degrees celsius for 24 hours. Loss on ignition was measured by combusting samples at 500 degrees celsius for 4 hours. Radiocesium activity was determined with the gamma counting method.
| Date |
|---|
| 2017 |
| Rank name | Value |
|---|---|
| Species | Schoenoplectus acutus |
| Species | Typha sp |
| Species | Cornus sericea |
| attribute name | definition | format, unit or codes |
|---|---|---|
| study_id | Unique identifier for the study made up of the first author's family name, as well as the second author's or 'et al.' if more than three, then publication year spearated by underscores. See worksCited.bib for more detail. | |
| coring_method | Code indicating what type of device was used to collect soil depth profiles. | russian corer = A half cylinder coring device with the coring section sealed off by a fin attached to a rotating pivot point |
| roots_flag | Code indicating whether live roots were included or excluded from carbon assessments. | roots and rhizomes included = Roots and rhizomes were included in dry bulk density and or organic matter and carbon measurements |
| compaction_flag | Code indicating how the authors qualified or quantified compaction of the core. | corer limits compaction = Authors specified that the coring device's design minimized compaction |
| dry_bulk_density_temperature | Temperature at which samples were dried to measure dry bulk density. This can include either samples that were freeze dried or oven dried. | celsius |
| dry_bulk_density_time | Time over which samples were dried to measure dry bulk density. | hour |
| dry_bulk_density_sample_volume | Sample volume used for bulk density measurements, if held constant. | cubicCentimeter |
| loss_on_ignition_temperature | Temperature at which samples were combusted to estimate fraction organic matter. | celsius |
| loss_on_ignition_time | Time over which samples were combusted to estimate fraction organic matter. | hour |
| carbon_measured_or_modeled | Code indicating whether fraction carbon was measured or estimated as a function of organic matter. | modeled = Fraction carbon was modeled as opposed to measured. |
| carbonates_removed | Whether or not carbonates were removed prior to calculating fraction organic carbon. | FALSE = Carbonates were not removed before measuring organic carbon |
| fraction_carbon_type | Code indicating whether fraction_carbon refers to organic or total carbon. | total carbon = Author specified that fraction carbon measurements were of total carbon. |
| cs137_counting_method | Code indicating the method used for determining radiocesium activity. | gamma = Gamma counting method used. |
| age_depth_model_reference | Code indicating the reference or 0 year of the age depth model. | CE = Year zero is set according to Common Era and Before Common Era standards |
| attribute name | definition | format, unit or codes |
|---|---|---|
| study_id | Unique identifier for the study made up of the first author's family name, as well as the second author's or 'et al.' if more than three, then publication year spearated by underscores. See worksCited.bib for more detail. | |
| site_id | Site identification code unique to each study. | |
| core_id | Core identification code unique to each site. | |
| core_date | Date of core collection. | YYYY-MM-DD |
| core_latitude | Positional latitude of the core in decimal degree WGS84. | degree |
| core_longitude | Positional longitude of the core in decimal degree WGS84. | degree |
| core_position_method | Code indicating how latitude and longitude were determined. | RTK-GPS = Real-time kinematic global position system (GPS) |
| core_elevation | Surface elevation of the core relative to defined datum. | meter |
| core_elevation_datum | The datum relative to which the core elevation was measured against (For a complete list of datum names and aliases please refer to the ISO Geodedic Registry https://iso.registry.bespire.eu/register/geodetic/VerticalDatum). | NAVD88 = A gravity-based geodetic datum, North American Vertical Datum of 1988 |
| core_elevation_method | Code indicating how elevation was determined | RTK-GPS = Real-time kinematic global position system (GPS) |
| annual_accretion_rate | Annual rate of accretion derived from 137Cs analysis. | millimeterPerYear |
| attribute name | definition | format, unit or codes |
|---|---|---|
| study_id | Unique identifier for the study made up of the first author's family name, as well as the second author's or 'et al.' if more than three, then publication year spearated by underscores. See worksCited.bib for more detail. | |
| site_id | Site identification code unique to each study. | |
| core_id | Core identification code unique to each site. | |
| depth_min | Minimum depth of a sampling increment. | centimeter |
| depth_max | Maximum depth of a sampling increment. | centimeter |
| dry_bulk_density | Dry mass per unit volume of a soil sample. This does not include ash free bulk density. | gramsPerCubicCentimeter |
| fraction_organic_matter | Mass of organic matter relative to sample dry mass. Ash free bulk density should not be used here but should be expressed as a loss on ignition fraction. | dimensionless |
| fraction_carbon | Mass of carbon relative to sample dry mass. | dimensionless |
| cs137_activity | Radioactivity counts per unit dry weight for radiocesium (137Cs). | becquerelsPerKilogram |
| cs137_activity_se | 1 standard error of uncertainty associated with cs137_activity. | becquerelsPerKilogram |
| age | Most likely, median, or mean age of the depth interval from submitter generated age depth model. | nominalYear |
| unit name | parent SI unit | unit type | description |
|---|---|---|---|
| becquerelsPerKilogram | radionucleotideActivityPerMass | becquerels per kilogram | |
| cubicCentimeter | cubicMeter | volume | cubic centimeter |
| millimeterPerYear | metersPerSecond | speed | millimeter per year |
This dataset is listed under a Creative Commons BY 4.0 and can be used with attribution. https://creativecommons.org/licenses/by/4.0/