Macronutrient Concentrations (NH4 - NO3 - NO2 - PO4) in Lakes

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 data set addresses this core area of research and quantifies macronutrient concentrations found at specific depths in McMurdo Dry Valley lakes.

Date Range: 

Friday, January 1, 1993 to Monday, April 30, 2012

...or query the data clicking the:

Variables: 

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

DOI: 

10.6073/pasta/ddafa14d91edc1092d4463d66d157fb9

Short name: 

Nutrients (NH4 - NO3 - NO2 - PO4)

Data set ID: 

56
People

Owner/Creator: 

Contact: 

Additional Project roles: 

Lab Crew
Associated Researcher
Data Manager