Biophysicochemical properties and hyperspectral reflectance values of biocrust and soil samples, Fryxell Basin, McMurdo Dry Valleys, Antarctica (2022)

Summary

Abstract: 

This data package includes biophysicochemical properties of biocrust and soil samples collected in-situ within the Lake Fryxell basin of the McMurdo Dry Valleys, Antarctica during December 2022 at 64 different terrestrial locations. These parameters include biological (ash-free dry mass, pigment concentration, soil invertebrate counts), physical (gravimetric water content, electrical conductivity, pH), and chemical (inorganic nitrogen, inorganic phosphorous, total nitrogen, soil organic carbon) properties of the surface soil, biocrust, and underlying soil. This package also contains reflectance measurements of individual grab samples of biocrust, soil, and rock collected from each of the field sites, acquired in a laboratory using a hyperspectral spectrometer. Additionally, this package contains parameters derived solely from geospatial data for each of the field sites, including aspect, slope, elevation, gravimetric water content, and snow frequency. These data were used to model habitat suitability of biocrusts in the Fryxell Basin using both in-situ field survey data and geospatial parameters. They aid in our understanding of the ecology of biocrust communities, where they are located throughout the Fryxell basin, and the structure and functioning of these microhabitats as well as improving understanding of the regional carbon budget. These data also highlight the importance of snow patch-associated biocrust communities, which are understudied but likely an important piece of the overall carbon budget in this region. 

Date Range: 

December 20, 2022 to December 25, 2022
Data Citation
Power, S.N., Salvatore, M.R., Adams, B.J., Barrett, J.E. 2024. Biophysicochemical properties and hyperspectral reflectance values of biocrust and soil samples, Fryxell Basin, McMurdo Dry Valleys, Antarctica (2022). Environmental Data Initiative. DOI: 10.6073/pasta/c6d439ab28cea276054771c748e14d67. Dataset accessed 24 July 2024.
Dataset(s)

Variables (click to expand): 

dataset_code
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
site_id
  • Label: Site ID
  • Definition: Site identifier. Refer to the "site" dataset within this package for additional metadata.
  • Type: Nominal
  • Missing values: None specified
afdm
  • Label: Ash-free dry mass
  • Definition: Ash-free dry mass (AFDM) content of the sample.
  • Type: Physical quantity
  • Unit: milligramsPerSquareCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
chla
  • Label: Chlorophyll-a
  • Definition: Chlorophyll-a (Chl-a) concentration of the sample.
  • Type: Physical quantity
  • Unit: microgramsPerSquareCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
caro
  • Label: Carotenoid
  • Definition: Carotenoid concentration of the sample.
  • Type: Physical quantity
  • Unit: microgramsPerSquareCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
scyto
  • Label: Scytonemin
  • Definition: Scytonemin concentration of the sample.
  • Type: Physical quantity
  • Unit: microgramsPerSquareCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

Variables (click to expand): 

dataset_code
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
site_id
  • Label: Site ID
  • Definition: Site identifier. Refer to the "site" dataset within this package for additional metadata.
  • Type: Nominal
  • Missing values: None specified
phylum
  • Label: Phylum
  • Definition: Phylum-level taxonomic classification.
  • Type: Nominal
  • Missing values: None specified
genus
  • Label: Genus
  • Definition: Genus-level taxonomic classification. Blank cells indicate samples not classified to the genus level.
  • Type: Nominal
  • Missing values: None specified
life_stage
  • Label: Life stage
  • Definition: Life stage, either adult or juvenile, of counts in phylum Nematoda.
  • Type: Nominal
  • Missing values: None specified
sex
  • Label: Sex
  • Definition: Sex, either male or female, of adult life stage counts in phylum Nematoda, except for Plectus spp., which are all female.
  • Type: Nominal
  • Missing values: None specified
vital_status
  • Label: Vital status
  • Definition: Vital status, either live or dead, of counts in phylum Nematoda.
  • Type: Nominal
  • Missing values: None specified
gwc_pct
  • Label: Gravimetric water content
  • Definition: Gravimetric water content of the soil sample.
  • Type: Nominal
  • Missing values: None specified
raw_count
  • Label: Raw count
  • Definition: Raw counts of invertebrates extracted from ~100 g of soil.
  • Type: Nominal
  • Missing values: None specified
transformed_count
  • Label: Transformed count
  • Definition: Transformed counts of invertebrates, expressed in number of organisms per 1 kg dry weight equivalent soil.
  • Type: Nominal
  • Missing values: None specified
remarks
  • Label: Remarks
  • Definition: Remarks about the sample.
  • Type: Nominal
  • Missing values: None specified

Variables (click to expand): 

dataset_code
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
site_id
  • Label: Site ID
  • Definition: Site identifier. Refer to the "site" dataset within this package for additional metadata.
  • Type: Nominal
  • Missing values: None specified
moisture_level
  • Label: Moisture level
  • Definition: Moisture status at the time the spectra were acquired. DRY: sample was dry. DAMP: moisture representative of field conditions when sampled; i.e. “field moist”. WET: moisture added; sprayed twice with spray bottle of distilled water.
  • Type: Nominal
  • Missing values: None specified
sample_type
  • Label: Sample type
  • Definition: Type of sample. SOIL: soil, likely including cobbles. BIO: biocrust present, dense, or incipient. ROCK: larger rock representative of nearby area (only sampled when surface area appeared dominated by specific/unique rock type).
  • Type: Nominal
  • Missing values: None specified
band_um
  • Label: Band
  • Definition: Wavelength band of reflectance at 0.001 um increments.
  • Type: Physical quantity
  • Unit: micrometer
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
reflectance
  • Label: Reflectance
  • Definition: Reflectance values (unitless) associated with each band and measurement.
  • Type: Nominal
  • Missing values: None specified
remarks
  • Label: Remarks
  • Definition: Remarks about the rock type, if applicable.
  • Type: Nominal
  • Missing values: None specified

Variables (click to expand): 

dataset_code
  • Label: Dataset code.
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
site_id
  • Label: Site ID
  • Definition: Site identifier. Refer to the "site" dataset within this package for additional metadata.
  • Type: Nominal
  • Missing values: None specified
gwc
  • Label: Gravimetric water content
  • Definition: Gravimetric water content (GWC) of the sample, expressed in grams of water per gram of dry soil.
  • Type: Physical quantity
  • Unit: gramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
ec
  • Label: Electrical conductivity
  • Definition: Electrical conductivity (EC) of the sample.
  • Type: Physical quantity
  • Unit: microSiemensPerSquareCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
ph
  • Label: pH
  • Definition: pH of the sample.
  • Type: Nominal
  • Missing values: None specified
nh4
  • Label: Ammonium
  • Definition: Inorganic nitrogen concentration of the sample in the form of ammonium (NH4+), expressed in micrograms of N per gram of dry soil.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
no3
  • Label: Nitrate
  • Definition: Inorganic nitrogen concentration of the sample in the form of nitrate (NO3-), expressed in micrograms of N per gram of dry soil.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
po4
  • Label: Phosphate
  • Definition: Inorganic phosphorus concentration of the sample in the form of phosphate (PO43-), expressed in micrograms of P per gram of dry soil.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
soc
  • Label: Soil organic carbon
  • Definition: Soil organic carbon concentration of the sample, expressed in milligrams of C per gram of dry soil.
  • Type: Physical quantity
  • Unit: milligramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
tn
  • Label: Total nitrogen
  • Definition: Total nitrogen concentration of the sample, expressed in milligrams of N per gram of dry soil.
  • Type: Physical quantity
  • Unit: milligramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified

Variables (click to expand): 

dataset_code
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
site_id
  • Label: Site ID
  • Definition: Site identifier.
  • Type: Nominal
  • Missing values: None specified
latitude
  • Label: Latitude
  • Definition: Latitude of site in decimal degrees.
  • Type: Nominal
  • Missing values: None specified
longitude
  • Label: Longitude
  • Definition: Longitude site in decimal degrees.
  • Type: Nominal
  • Missing values: None specified
aspect
  • Label: Aspect
  • Definition: Aspect of site from DEM in degrees.
  • Type: Physical quantity
  • Unit: degree
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
slope
  • Label: Slope
  • Definition: Slope of site from DEM in degrees.
  • Type: Physical quantity
  • Unit: degree
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
elevation
  • Label: Elevation
  • Definition: Elevation of site from DEM in meters.
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
biocrust
  • Label: Biocrust status
  • Definition: Whether biocrust is absent, incipiently present (incipient), or present.
  • Type: Nominal
  • Missing values: None specified
mean_gwc
  • Label: Mean gravimetric water content
  • Definition: Mean percentage gravimetric water content, determined using remote sensing techniques (see methods).
  • Type: Nominal
  • Missing values: None specified
snow_frequency
  • Label: Snow frequency
  • Definition: Percentage of time area is covered by snow, determined using remote sensing techniques (see methods).
  • Type: Nominal
  • Missing values: None specified

Short name: 

biocrusthab

Dataset ID: 

271
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Field Crew
Field Crew
Field Crew
Lab Technician
Data Manager