Carbon data for intertidal soils and sediments, Skeena River estuary, British Columbia
Paul
Sanborn
paul.sanborn@unbc.ca
Paul
Sanborn
author
Darwyn
Coxson
author
2020
Tidal marsh soils were sampled at low tide along 12 transects along the Skeena River estuary south of Port Edward, British Columbia, in 2014 and 2017. Eight of the transects were on the northeast side of the channel; four were on the southwest side. Sampling locations were stratified according to vegetation type. Usually three pits were excavated to 1 m depth on each transect, with one pit in each of the distinct vegetation zones. Bulk samples were collected from each distinct soil horizon, or where horizons were not clearly differentiated, at 25 cm depth intervals. Core samples of fixed volume were also collected from the same excavations for bulk density determination. Chemical analyses consisted of total C concentration (equivalent to organic C for these non-calcareous materials), total N, pH, and electrical conductivity (a measure of salinity).
carbon
nitrogen
bulk density
tidal marsh
British Columbia
Skeena River
This dataset is listed under a Creative Commons BY 4.0 and can be used with attribution. https://creativecommons.org/licenses/by/4.0/
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2014
2017
Species
Potentilla anserina
Species
Carex lyngbyei
Species
Deschampsia cespitosa
Species
Festuca rubra
Species
Glaux maritima
Species
Plantago maritima
Species
Plantago macrocarpa
Species
Triglochin maritima
Species
Angelica lucida
Species
Conioselinum gmelinii
Species
Ligusticum hultenii
Species
Scirpus microcarpus
Species
Symphyotrichum subspicatum
Species
Castilleja hyetophila
Species
Hordeum brachyantherum
Species
Lathyrus palustris
Species
Lupinus nootkatensis
Species
Maianthemum dilatatum
Species
Stellaria humifusa
Species
Juncus arcticus
Species
Bromus pacificus
Species
Oenanthe sarmentosa
Species
Galium trifidum
Species
Trientalis arctica
Species
Carex pluriflora
Species
Rumex occidentalis
Species
Achillea millefolium
Species
Fritillaria camschatcensis
Paul
Sanborn
paul.sanborn@unbc.ca
sanborn_and_coxson_2020_methods
methods information for study
sanborn_and_coxson_2020_methods.csv
column
,
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.
string
Free text
coring_method
Code indicating what type of device was used to collect soil depth profiles.
string
soil pit
A pit is dug from the surface of the soil to the underlying bedrock
roots_flag
Code indicating whether live roots were included or excluded from carbon assessments.
string
roots and rhizomes included
Roots and rhizomes were included in dry bulk density and or organic matter and carbon measurements
sediment_sieved_flag
Code indicating whether or not sediment was sieved prior to carbon measurements.
string
sediment not sieved
Sediment was not sieved prior to analysis for organics.
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.
float
celsius
real
dry_bulk_density_time
Time over which samples were dried to measure dry bulk density.
float
hour
integer
dry_bulk_density_sample_volume
Sample volume used for bulk density measurements, if held constant.
float
cubicCentimeter
real
carbonates_removed
Whether or not carbonates were removed prior to calculating fraction organic carbon.
string
FALSE
Carbonates were not removed before measuring organic carbon
fraction_carbon_type
Code indicating whether fraction_carbon refers to organic or total carbon.
string
total carbon
Author specified that fraction carbon measurements were of total carbon.
sanborn_and_coxson_2020_site
site information for study
sanborn_and_coxson_2020_site.csv
column
,
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.
string
Free text
site_id
Site identification code unique to each study.
string
Free text
site_description
Site description including relevant study details and political geographic units. Some of these descriptions can be automated by the ingestion code.
string
Free text
vegetation_method
Indicate whether vegetation_class was determined using a field observation or a measurement
string
field observation
Vegetation inferred by field observation
vegetation_notes
Any relevant submitter generated notes on how vegetation_class and dominant_species were determined.
string
Free text
inundation_class
Code based on submitter field observation or measurement indicating how often the coring location is inundated.
string
high
Study-specific definition of an elevation relatively high in the tidal frame, typically defined by vegetation type
mid
Study-specific definition of an elevation in the relative middle of the tidal frame, typically defined by vegetation type
low
Study-specific definition of an elevation in relatively low in the tidal frame, typically defined by vegetation type
inundation_method
Indicate whether inundation_class was determined using a field observation or a measurement
string
field observation
Inundation inferred by field observation such as vegetation
inundation_notes
Any relevant submitter generated notes on how inundation was determined
string
Free text
sanborn_and_coxson_2020_cores
cores information for study
sanborn_and_coxson_2020_cores.csv
column
,
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.
string
Free text
site_id
Site identification code unique to each study.
string
Free text
core_id
Core identification code unique to each site.
string
Free text
core_year
Year of core collection
float
nominalYear
real
core_latitude
Positional latitude of the core in decimal degree WGS84.
float
degree
real
core_longitude
Positional longitude of the core in decimal degree WGS84.
float
degree
real
core_position_method
Code indicating how latitude and longitude were determined.
string
handheld
Conventional Commercially available hand-held GPS
vegetation_method
Indicate whether vegetation_class was determined using a field observation or a measurement
string
field observation
Vegetation inferred by field observation
vegetation_notes
Any relevant submitter generated notes on how vegetation_class and dominant_species were determined.
string
Free text
inundation_class
Code based on submitter field observation or measurement indicating how often the coring location is inundated.
string
high
Study-specific definition of an elevation relatively high in the tidal frame, typically defined by vegetation type
mid
Study-specific definition of an elevation in the relative middle of the tidal frame, typically defined by vegetation type
low
Study-specific definition of an elevation in relatively low in the tidal frame, typically defined by vegetation type
inundation_method
Indicate whether inundation_class was determined using a field observation or a measurement
string
field observation
Inundation inferred by field observation such as vegetation
inundation_notes
Any relevant submitter generated notes on how inundation was determined
string
Free text
pH
pH of the pore water
float
dimensionless
real
pH_notes
Any additional notes relevant to pH
string
Free Text
carbon_stock
Calculated sediment carbon stocks from CHN or LOI data
float
kilogramsPerSquareMeter
real
carbon_stock_method
Carbon method used to calculate down-core stocks
string
EA
Each sample presented was measured using Elemental Analysis
carbon_stock_0.5m
Calculated total carbon stocks in the top 0.5 meter of sediment
float
kilogramsPerSquareMeter
real
carbon_stock_0.1m
Calculated total carbon stocks in the top meter of sediment. If the core was <1 m deep, we make the assumption that the carbon below the sampled depth is equivalent to the average carbon within the sampled depth range. If the core was >1 m deep, we just sum the stocks values in the top 1 m.
float
kilogramsPerSquareMeter
real
sanborn_and_coxson_2020_depthseries
depthseries information for study
sanborn_and_coxson_2020_depthseries.csv
column
,
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.
string
Free text
site_id
Site identification code unique to each study.
string
Free text
core_id
Core identification code unique to each site.
string
Free text
depth_min
Minimum depth of a sampling increment.
float
centimeter
real
depth_max
Maximum depth of a sampling increment.
float
centimeter
real
sample_id
Sample identification unique to the core. This should be used in the case that there are relevant lab specific sample codes, or in the case that there are multiple replicate samples.
string
Free text
dry_bulk_density
Dry mass per unit volume of a soil sample. This does not include ash free bulk density.
float
gramsPerCubicCentimeter
real
fraction_carbon_measured
Measured mass of carbon relative to sample dry mass.
float
dimensionless
real
fraction_carbon_modeled
Modeled mass of carbon relative to sample dry mass.
float
dimensionless
real
fraction_nitrogen
Reported fraction of nitrogen in sample by elemental analysis.
float
dimensionless
real
C_to_N_ratio
Calculated carbon-to-nitrogen ratio in the soil sample
float
dimensionless
real
carbon_stock
Calculated sediment carbon stocks from CHN or LOI data
float
kilogramsPerSquareMeter
real
carbon_density
Reported carbon density from the publication (usually because the publication used a CHN analyzer, not LOI, to compute C abundance)
float
gramsPerCubicCentimeter
real
depth_interval_notes
Any other submitter generated notes specific to the depth interval.
string
Free text
cubic centimeter