Soil biota data from the Pulse-Press Project (P3), McMurdo Dry Valleys, Antarctica (2010-2020, ongoing)

Summary

Abstract: 

Climate warming in polar regions is associated with thawing of permafrost, resulting in significant changes in soil hydrology, biogeochemical cycling, and in the activity and composition of soil communities. While ongoing, directional climate warming can elicit such responses over decadal time scales, their manifestation typically occurs as discrete thawing pulses. Indeed, in the McMurdo Dry Valleys of Antarctica abrupt changes in community structure and biogeochemical cycling in terrestrial and aquatic ecosystems following a summer warming event (Jan. 2002) exceeded the influences of a decadal cooling trend in both magnitude and rate of response. Thus, we anticipate that climate-mediated permafrost changes and their associated impacts on soil communities and biogeochemical cycles may occur over seasonal time scales. Our objective is to simulate different frequencies of permafrost thawing events in Antarctic permafrost soils. Since the top horizons of most Antarctic soils are dry permafrost (i.e., there is insufficient water content to generate ice-cement), with ice-cement or massive ice typically below 30 cm, permafrost thawing events are likely to result in subsurface movements of water that may manifest as groundwater seeps down gradient.

Date Range: 

January 2, 2010 to January 4, 2020
Data Citation
Adams, B.J., Wall, D.H. 2022. Soil biota data from the Pulse-Press Project (P3), McMurdo Dry Valleys, Antarctica (2010-2020, ongoing). Environmental Data Initiative. DOI: 10.6073/pasta/4e965fbbea4e6c3cad25fc044ded333d. Dataset accessed 17 May 2022.
Dataset(s)

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset Code
  • Definition: Unique identifier for the table in the MCM LTER database. In this case, P3.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_ID
  • Label: Sample ID
  • Definition: A unique sample code consisting of treatment (C, H, or L), block (1, 3, 5, 7, 9, 11, 13), and replicate (a, b, c, d).
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date Time
  • Definition: The date the soil sample was collected from the field.
  • Type: Date/time
  • Date format: mm/dd/yyyy
  • Missing values: None specified
TREATMENT
  • Label: Treatment
  • Definition: The basin where the sample was collected (Fryxell, Hoare, Bonney).
  • Type: Nominal
  • Missing values: None specified
BLOCK_ID
  • Label: Block Id
  • Definition: The block number where the soil sample was collected. Values indicate the distance in meters from the water application trench. 1=1m, 3=3m, and so forth.
  • Type: Nominal
  • Missing values: None specified
SOIL_WATER_CONTENT
  • Label: Soil Water Content
  • Definition: The gravimetric soil water content calculated as a percentage of grams of water divided by the grams of oven dried soil.
  • Type: Physical quantity
  • Unit: percent g/g
  • Maximum: 100
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SML
  • Label: Scottnema Male Live
  • Definition: The total number of living male Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SMD
  • Label: Scottnema Male Dead
  • Definition: The total number of dead male Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SFL
  • Label: Scottnema Female Live
  • Definition: The total number of living female Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SFD
  • Label: Scottnema Female Dead
  • Definition: The total number of dead female Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SJL
  • Label: Scottnema Juvenile Live
  • Definition: The total number of living juvenile Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SJD
  • Label: Scottnema Juvenile Dead
  • Definition: The total number of dead juvenile Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SA
  • Label: Scottnema Adult
  • Definition: The total number of living and dead Scottnema lindsayae adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SJ
  • Label: Scottnema Juvenile
  • Definition: The total number of living and dead Scottnema juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
STL
  • Label: Scottnema Total Live
  • Definition: Total number of living Scottnema lindsayae (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
STD
  • Label: Scottnema Total Dead
  • Definition: The total number of dead Scottnema lindsayae (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
STLD
  • Label: Total Scottnema Live and Dead
  • Definition: The total number of live + dead Scottnema lindsayae (juvenile and adult) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EML
  • Label: Eudorylaimus Male Live
  • Definition: The total number of living male Eudorylaimus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EMD
  • Label: Eudorylaimus Male Dead
  • Definition: The total number of dead male Eudorylaimus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EFL
  • Label: Eudorylaimus Female Live
  • Definition: The total number of living female Eudorylaimus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EFD
  • Label: Eudorylaimus Female Dead
  • Definition: The total number of dead female Eudorylaimus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EJL
  • Label: Eudorylaimus Juvenile Live
  • Definition: The total number of living juvenile Eudorylaimus spp. nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EJD
  • Label: Eudorylaimus Juvenile Dead
  • Definition: The total number of dead juvenile Eudorylaimus spp. nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EA
  • Label: Eudorylaimus Adult
  • Definition: The total number of living and dead Eudorylaimus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
EJ
  • Label: Eudorylaimus Juvenile
  • Definition: The total number of living and dead Eudorylaimus spp. juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
ETL
  • Label: Total Eudorylaimus Live
  • Definition: Total number of living Eudorylaimus spp. (juvenile and adult) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
ETD
  • Label: Total Eudorylaimus Dead
  • Definition: The total number of dead Eudorylaimus spp. (juvenile and adult) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
ETLD
  • Label: Total Eudorylaimus Live and Dead
  • Definition: The total number of live + dead Eudorylaimus spp. (juvenile and adult) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PFL
  • Label: Plectus Female Live
  • Definition: The total number of living female Plectus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PFD
  • Label: Plectus Female Dead
  • Definition: The total number of dead female Plectus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PJL
  • Label: Plectus Juvenile Live
  • Definition: The total number of living juvenile Plectus spp. nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PJD
  • Label: Plectus Juvenile Dead
  • Definition: The total number of dead juvenile Plectus spp. nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PA
  • Label: Plectus Adult
  • Definition: The total number of living and dead Plectus spp. adult nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PJ
  • Label: Plectus Juvenile
  • Definition: The total number of living and dead Plectus spp. juvenile nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PTL
  • Label: Total Plectus Live
  • Definition: Total number of living Plectus spp. (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PTD
  • Label: Total Plectus Dead
  • Definition: The total number of dead Plectus spp. (juvenile and adults) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
PTLD
  • Label: Total Plectus Live and Dead
  • Definition: The total number of live + dead Plectus spp. (juvenile and adult) nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL_ROTIFERS
  • Label: Total Rotifers
  • Definition: Total number of rotifers per kg soil oven dry weight equivalent present in a sample.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL_TARDIGRADES
  • Label: Total Tardigrades
  • Definition: Total number of tardigrades per kg soil oven dry weight equivalent present in a sample.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL_LIVE
  • Label: Total Living Nematodes
  • Definition: The total number of living nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent (#/kg soil).
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL_DEAD
  • Label: Total Dead Nematodes
  • Definition: The total number of dead nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent (#/kg soil).
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL
  • Label: Total Living and Dead Nematodes
  • Definition: The total number of living and dead nematodes extracted from the soil sample in number of organisms per kg soil oven dry weight equivalent.
  • Type: Physical quantity
  • Unit: # kg/soil
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
COMMENTS
  • Label: Comments
  • Definition: Comments about the sample.
  • Type: Nominal
  • Missing values: None specified

Short name: 

P3_BIOTA

Dataset ID: 

4016
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Data Manager