Nitrogen and phosphorus concentrations in discrete water column samples collected from lakes in the McMurdo Dry Valleys, Antarctica (1993-2020, ongoing)

Summary

Abstract: 

An important part of the McMurdo Long Term Ecological Research (LTER) project is identifying patterns and movements of nutrients in perennial ice-covered lakes. This dataset addresses this core area of research and quantifies macronutrient concentrations (NH4+, NO3-, NO2, SRP) found at specific depths in McMurdo Dry Valley lakes.

Date Range: 

October 27, 1993 to January 11, 2020
Data Citation
Priscu, J. 2022. Nitrogen and phosphorus concentrations in discrete water column samples collected from lakes in the McMurdo Dry Valleys, Antarctica (1993-2020, ongoing). Environmental Data Initiative. DOI: 10.6073/pasta/5cba7e25aa687c1e989c72c3ee0a0f69. Dataset accessed 26 May 2022.
Dataset(s)

Description: 

Details about the nutrients lake data container: column definitions, units and codes used, etc.

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code to designate the table name
  • Type: Nominal
  • Missing values: None specified
LIMNO_RUN
  • Label: Limno Run
  • Definition: Code for lake's sampling location and date
  • Type: Nominal
  • Missing values: None specified
LOCATION NAME
  • Label: Location Name
  • Definition: Name of lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
LOCATION_CODE
  • Label: Location Code
  • Definition: Code for site where measurement was made
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date
  • Definition: Date on which sample was gathered
  • Type: Date/time
  • Date format: MM/DD/YYYY
  • Missing values: None specified
Depth (m)
  • Label:
  • Definition: Distance below the piezometric water level from which sample was drawn
  • Type: Physical quantity
  • Unit: meter
  • Maximum: 45
  • Minimum: 1
  • Precision: 1
  • Missing values: None specified
NH4 (uM)
  • Label: NH4 (microM)
  • Definition: Ammonia concentration found using Lachat
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 2000
  • Minimum: 0
  • Precision: 0.1
  • Missing values:
    • Null = None given
NH4(MCM)(uM)
  • Label: NH4(MCM) (microM)
  • Definition: Ammonia concentration found using manual methods
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 500
  • Minimum: 0
  • Precision: 0.1
  • Missing values:
    • Null = None given
NH4 Comments
  • Label:
  • Definition: Helpful hints about the NH4 sample
  • Type: Nominal
  • Missing values: None specified
SRP (uM)
  • Label: SRP (microM)
  • Definition: Soluble reactive phosphorus found using Lachat
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 100
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
SRP(MCM)(uM)
  • Label: SRP(MCM) (microM)
  • Definition: Soluble reactive phosphorus found using manual methods
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 2
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
SRP Comments
  • Label:
  • Definition: Helpful hints about the SRP sample
  • Type: Nominal
  • Missing values: None specified
NO2 (uM)
  • Label: NO2 (microM)
  • Definition: Nitrite concentration found using Lachat
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 100
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
NO2(MCM)(uM)
  • Label: NO2(MCM) (microM)
  • Definition: Nitrite concentration found using manual methods
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 100
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
NO2 Comments
  • Label:
  • Definition: Helpful hints about the NO2 sample
  • Type: Nominal
  • Missing values: None specified
NO3 (uM)
  • Label: NO3 (microM)
  • Definition: Nitrate concentration found using Lachat
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 500
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
NO3(MCM)(uM)
  • Label: NO3(MCM) (microM)
  • Definition: Nitrate concentration found using manual methods
  • Type: Physical quantity
  • Unit: microM
  • Maximum: 300
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
NO3 Comments
  • Label:
  • Definition: Helpful hints about the NO3 sample
  • Type: Nominal
  • Missing values: None specified
File Name
  • Label:
  • Definition: Name of file in which data was submitted
  • Type: Nominal
  • Missing values: None specified
Sample Comments
  • Label:
  • Definition: notes about the sample
  • Type: Nominal
  • Missing values: None specified
DEPTH MASL
  • Label:
  • Definition: Depth referred to the Sea level. Distance below Mean Average Sea water level reference from which sample was drawn
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 1
  • Missing values: None specified

Short name: 

Nutrients (NH4 - NO3 - NO2 - PO4)

Dataset ID: 

56
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Lab Technician
Data Manager
Former Field Crew
Former Data Manager