Soil geochemistry and microbial community data from glaciated and potential glacial refugia sites in the McMurdo Dry Valleys, Antarctica (1993-2019)

Summary

Abstract: 

A study was conducted to examine soil microbial communities and associated geochemical parameters at potential glacial refugia and glaciated control sites throughout the McMurdo Dry Valleys region of Antarctica. Soil samples were collected as part of ongoing long-term monitoring efforts by the McMurdo Dry Valleys Long Term Ecological Research program (MCM LTER). The oldest samples used in this study were collected during the 1993-1994 austral summer, and the newest from the 2018-2019 austral summer. "Refugia" sites were selected based on geographical positions and elevations indicative of potential glacial refugia status. Each refugia site was paired with a lower elevation "glaciated" site in the same dry valley that was not likely to have functioned as a refugium. Six replicate soils per sampling site were sequenced with 16S primers following Earth Microbiome Project protocols, filtered using the DADA2 pipeline, and clustered to amplicon sequence variant using the SILVA reference database to generate the microbial classification table included herein. Soil samples were also analyzed for various geochemical parameters as part of this study, which include P, K, NO3-, gravimetric water content, percent organic matter, pH, and electroconductivity.

Date Range: 

January 3, 1994 to January 31, 2019
Data Citation
Jackson, A.C., Jorna, J., Chaston, J.M., Wall, D.H., Adams, B.J. 2021. Soil geochemistry and microbial community data from glaciated and potential glacial refugia sites in the McMurdo Dry Valleys, Antarctica (1993-2019). Environmental Data Initiative. DOI: 10.6073/pasta/3380695f50e8f3527c12aba416e86b1f. Dataset accessed 28 January 2022.
Dataset(s)

Description: 

Geochemistry data

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
SEQUENCE_ID
  • Label: Sequence ID
  • Definition: Microbial sequence ID associated with the sample and replicate.
  • Type: Nominal
  • Missing values: None specified
REPLICATE
  • Label: Replicate number
  • Definition: Sample replicate number. Geochemical parameters were bulked across replicates for each sample.
  • Type: Nominal
  • Missing values: None specified
PAIR
  • Label:
  • Definition: Number designating the paired low- and high- elevation sites from each Valley. E.g., m388 is a 1 and m810 is also a 1, meaning they are a direct comparison.
  • Type: Nominal
  • Missing values: None specified
LOCATION
  • Label:
  • Definition: Location where soil sample was collected.
  • Type: Nominal
  • Missing values: None specified
VALLEY
  • Label:
  • Definition: Valley where soil sample was collected.
  • Type: Nominal
  • Missing values: None specified
SOIL_SAMPLE_ID
  • Label:
  • Definition: Code associated with the soil sample.
  • Type: Nominal
  • Missing values: None specified
SEQ_TUBE_ID
  • Label: Sequence Tube ID
  • Definition: Code written on the sequencing tubes.
  • Type: Nominal
  • Missing values: None specified
SEASON
  • Label:
  • Definition: Field season or seasons when soil sample was collected.
  • Type: Nominal
  • Missing values: None specified
LATITUDE
  • Label:
  • Definition: Latitude of the location where the soil sample was collected.
  • Type: Nominal
  • Missing values: None specified
LONGITUDE
  • Label:
  • Definition: Longitude of the location where the soil sample was collected.
  • Type: Nominal
  • Missing values: None specified
ELEVATION_M
  • Label:
  • Definition: Elevation of the location where the soil sample was collected.
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
COAST_DIST_KM
  • Label: Distance from coast
  • Definition: Distance of the sampling site to the nearest coastline of the continent.
  • Type: Physical quantity
  • Unit: kilometer
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SITE_CHARACTERIZATION
  • Label:
  • Definition: Initial status of the sampling site as a potential refugia or a glaciated (control).
  • Type: Nominal
  • Missing values: None specified
ELEVATION_TYPE
  • Label:
  • Definition: Designation of the sampling site as a high or low elevation site.
  • Type: Nominal
  • Missing values: None specified
P_MGL
  • Label: Phosphorus
  • Definition: Available phosphorus in the soil sample.
  • Type: Physical quantity
  • Unit: milligramsPerLiter (mg/l)
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
K_MGL
  • Label: Potassium
  • Definition: Available potassium in the soil sample.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
OM_MGL
  • Label: Soil organic matter
  • Definition: Organic matter in the soil sample.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
PH
  • Label: pH
  • Definition: pH of the soil sample.
  • Type: Nominal
  • Missing values: None specified
EC_USCM
  • Label: Electric conductivity
  • Definition: Electric conductivity of the soil sample.
  • Type: Physical quantity
  • Unit: microSiemensPerCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NO3N_MGL
  • Label: Nitrate
  • Definition: Available nitrate as nitrogen in the soil sample.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
GWC_PCT
  • Label: Gravimetric water content
  • Definition: Gravimetric water content of the soil sample.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
BIOPROJ_ACCN
  • Label: BioProject Accession
  • Definition: NCBI BioProject accession number associated with the sample.
  • Type: Nominal
  • Missing values: None specified
BIOSAMP_ACCN
  • Label: BioSample Accession
  • Definition: NCBI BioSample accession number associated with the sample.
  • Type: Nominal
  • Missing values: None specified

Description: 

Feature classification table that contains every observed ASV in the 16S sequencing products, the number of copies of that ASV across every sample, as well as the taxonomic classification of that sample using the SILVA reference database. m388-m864 correspond to the Sequence ID in the geochemical dataset. 

Short name: 

SOILS_REFUGIA

Dataset ID: 

267