Soil Long Term Manipulation Experiment

Summary

Abstract: 

A long-term soil manipulation experiment has been conducted as part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project. The response of soil organisms (nematodes, rotifers and tardigrades) to the treatments is monitored by sampling soil on an annual basis.

Date Range: 

Friday, January 1, 1993 to Saturday, December 31, 2011

...or query the data clicking the:

Variables: 

DATASET_CODE
  • Label:
  • Definition: Unique identifier for the table in the MCM LTER database
  • Type: Nominal
  • Missing values: None specified
FIELD_YEAR
  • Label:
  • Definition: A sorting header indicating the field season when the sample was collected
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: The date the soil sample was collected from the field
  • Type: Date/time
  • Date format: mm/dd/yyyy
  • Missing values: None specified
SAMPLE_ID
  • Label:
  • Definition: An internal identifier for the record
  • Type: Nominal
  • Missing values: None specified
BLOCK_ID
  • Label:
  • Definition: The block number that the soil sample was collected from, it is an integer to ID the block ranging from 1 to 8.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
Treatment
  • Label:
  • Definition: The manipulation for a give plot from where the soil was collected - see codes for letter designation definitions
  • Type: Code list
  • Codes:
    • C = control plots (no manipulations)
    • T = enhanced soil temperature using ITEX conical open-top chambers made of solar fiberglass
    • W = Nanopure water added to field capacity to 10 cm depth (5.6 L/plot) once per season
    • TW = temperature enhancement and water addition
    • WS = sucrose added in solution (15.82 g sucrose in 5.6 L water per plot) once per season
    • WM = mannitol added in solution (17.01 g mannitol in 5.6 L water per plot) once per season
    • TWS = temperature enhancement plus sucrose addition
    • TWM = temperature enhancement plus mannitol addition.
  • Missing values: None specified
SOIL_WATER_CONTENT
  • Label: Soil water content
  • Definition: The gravimetric soil water content as a percentage of grams of water over grams of mass.
  • Type: Physical quantity
  • Unit: dimensionless
  • 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 lindsayae 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 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
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. 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
EJD
  • Label: Eudorylaimus Juvenile Dead
  • Definition: The total number of dead juvenile 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
EA
  • Label: Eudorylaimus Adults
  • 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 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
ETD
  • Label: Total Eudorylaimus Dead
  • Definition: The total number of dead Eudorylaimus 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
ETLD
  • Label: Total Eudorylaimus Live and Dead
  • Definition: The total number of live + dead Eudorylaimus 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
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. 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
PJD
  • Label: Plectus Juvenile Dead
  • Definition: The total number of dead juvenile 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
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 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
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:
  • Definition: The total number of living nematodes extracted from the soil sample - in the number of organisms in the entire sample collected
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TOTAL_DEAD
  • Label:
  • Definition: The total number of dead nematodes extracted from the soil sample - in the number of organisms in the entire sample collected
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
COMMENTS
  • Label:
  • Definition: Information about samples and occurrence of other organisms
  • Type: Nominal
  • Missing values: None specified
PH
  • Label:
  • Definition: The opposite log of the hydrogen ion concentration of a 1:2 soil-water paste
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
CONDUCTIVITY
  • Label:
  • Definition: The electrical conductivity in microSiemens/cm of a 1:5 soil:deionized water solution.
  • Type: Physical quantity
  • Unit: microSiemens/cm
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • Null = None given
TN
  • Label:
  • Definition: Total nitrogen (% N by wt.), the nitrogen content of the unacidified soil.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
TC
  • Label:
  • Definition: Total carbon (% C by wt.), the carbon content of the unacidified soil.
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
SOC
  • Label:
  • Definition: Soil organic carbon (% C by wt.), the carbon content of acidified soil
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • Null = None given
CHLA
  • Label: Chlorophyll a (ug/g)
  • Definition: The chlorophyll a content of the sample expressed per kg soil oven dry weight equivalent
  • Type: Physical quantity
  • Unit: ug/g
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • Null = None given
CHEMISTRY_COMMENTS
  • Label:
  • Definition: Information about the chemistry samples and occurrence of other organisms
  • Type: Nominal
  • Missing values: None specified

DOI: 

10.6073/pasta/4d895dea5dc6f4650a0da3078a3febc5

Short name: 

LTM

Data set ID: 

4001
People

Owner/Creator: 

Contact: 

Additional Project roles: 

Associated Researcher
Associated Researcher
Lab Crew
Lab Crew
Field Crew
Lab Crew
Field Crew
Lab Crew
Lab Crew
Lab Crew
Lab Crew
Lab Crew
Lab Crew
Lab Crew
Data Manager
Lab Crew