2012_GS_ITEX_PF_CHN_Data_csv

Percent carbon and nitrogen of leaves from shoots harvested at three levels in the canopy from 19 plots dominated by S. pulchra and B. nana shrubs near LTER Shrub plots at Toolik Field Station, AK the summer of 2012.

Variables

YEAR
  • Label: YEAR
  • Definition: year of measurement
  • Type: Date/time
  • Date format: YYYY
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date of Measurement
  • Type: Date/time
  • Date format: dd-mmm-yy
  • Missing values: None specified
SITE
  • Label: SITE
  • Definition: Toolik
  • Type: Nominal
  • Missing values: None specified
GROUP
  • Label: GROUP
  • Definition: Measurement location in relation to Toolik Lake LTER Shrub plots; In vicinity of Block1 = Upland, IVO Block 2 = Outlet
  • Type: Nominal
  • Missing values: None specified
PLOT
  • Label: PLOT
  • Definition: Individual plot identifier
  • Type: Nominal
  • Missing values: None specified
TREATMENT
  • Label: TREATMENT
  • Definition: control or fertilized annually (with N and P)
  • Type: Nominal
  • Missing values: None specified
PLOT SIZE
  • Label: PLOT SIZE
  • Definition: 1m x 1m point frame size
  • Type: Nominal
  • Missing values: None specified
DOM VEG
  • Label: DOM VEG
  • Definition: Dominant canopy vegetation
  • Type: Nominal
  • Missing values: None specified
SPP
  • Label: SPP
  • Definition: Shoot species sampled
  • Type: Nominal
  • Missing values: None specified
SHOOT ID
  • Label: SHOOT ID
  • Definition: Identification for each shoot sampled (NOT unique); consists of canopy position (up/mid/low), species abbreviation, and a number
  • Type: Nominal
  • Missing values: None specified
CANOPY POSN
  • Label: CANOPY POSN
  • Definition: Relative position of shoot in the canopy
  • Type: Nominal
  • Missing values: None specified
RUN
  • Label: RUN
  • Definition: Number of the tray run through the CHN analysis (ThermoScientific2000)
  • Type: Nominal
  • Missing values: None specified
SAMPLE NAME
  • Label: SAMPLE NAME
  • Definition: Unique sample ID created by combining the PLOT with the SHOOT ID
  • Type: Nominal
  • Missing values: None specified
SAMPLE CODE
  • Label: SAMPLE CODE
  • Definition: Sample location on the tray run through the CHN analysis (ThermoScientific 2000)
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MASS (MG)
  • Label: MASS (MG)
  • Definition: Mass of the ground sample used for the run (mg leaf)
  • Type: Physical quantity
  • Unit: milligram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
%N
  • Label: %N
  • Definition: percent Nitrogen in sample (%)
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
%C
  • Label: %C
  • Definition: percent Carbon in sample (%)
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
C:N
  • Label: C:N
  • Definition: Ratio of carbon to nitrogen (%C / %N)
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
COMMENTS
  • Label: COMMENTS
  • Definition: Notes about samples
  • Type: Nominal
  • Missing values: None specified
Data Source Details

Header lines: 

1

Orientation: 

Column

Quote character: 

"

Field delimiter: 

,

Record delimiter: 

\r\n

Number of Records: 

116