ARC_Lakes_PrimProdChl_2000-2009_csv

Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Arctic LTER. Summer 2000 to 2009.

Variables

SortChem_#
  • Label: SortChem_#
  • Definition: Number used to identify samples - generally not used until later data but column remains with older data to enable comparison
  • Type: Nominal
  • Missing values: None specified
Site
  • Label: Site
  • Definition: Site Name: Name of the lake where measurements were taken. There are discrete sampling sites defined by water depth, generally they are at the point of maximum depth.
  • Type: Nominal
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date readings were taken on.
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Depth (m)
  • Label: Depth (m)
  • Definition: Depth from surface of lake, stream, or soil starting from the surface as 0. This depth corresponds with data in other files (Nutriends, Chemistry)
  • Type: Physical quantity
  • Unit: meter
  • Maximum: 21
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Time_hr_dst
  • Label: Time_hr_dst
  • Definition: Sampling Time in Alaska Daylight Savings Time (1 hour ahead of Alaska Standard Time: if 13:00 DST than 12:00 AST)
  • Type: Date/time
  • Date format: hh:mm
  • Missing values:
    • . = Missing or Not Measured
(Active) Corrected chl a (ug/L)
  • Label: (Active) Corrected chl a (ug/L)
  • Definition: Corrected Chlorophyll a, active chl a
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 9.35
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Total chl a (ug/L)
  • Label: Total chl a (ug/L)
  • Definition: Total chl a (uncorrected for pheophytin)
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 11.91
  • Minimum: 0.01
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Pheo (ug/L)
  • Label: Pheo (ug/L)
  • Definition: Pheophytin
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 5.01
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
PPROD (mgC/m3/d)
  • Label: PPROD (mgC/m3/d)
  • Definition: Rate of primary production
  • Type: Physical quantity
  • Unit: microgramPerLiterPerDay
  • Maximum: 349.84
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
Notes
  • Label: Notes
  • Definition: Any additional notes about the sample or data set
  • Type: Nominal
  • Missing values: None specified
Data Source Details

Header lines: 

4

Orientation: 

Column

Quote character: 

"

Field delimiter: 

,

Record delimiter: 

\r\n

Number of Records: 

2085