Above ground plant biomass in a mesic acidic tussock tundra experimental site 2000, Arctic LTER, Toolik Lake, Alaska.

Abstract: 

Above ground plant biomass and leaf area were measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61(1), 1991 pp.1-31.) This file contains the biomass numbers for each harvested quadrat and per cent carbon and nitrogen summaries for control and fertilized plots. Leaf area data is in 2000gsttLA

Project Keywords: 

Data set ID: 

1390

EML revision ID: 

14

Short name: 

2000gsttbm
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Monday, July 24, 2000 to Tuesday, August 1, 2000

Publication Date: 

Thursday, December 12, 2002

Methods: 

Plots were setup in June 1980 with annual fertilization treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate) were applied. Greenhouses and shade houses were annually set up in late May or early June and removed in the end of August or early September. Greenhouses and shade houses were discontinued in 1989. There are 4 replicate blocks, each containing 1 replicate of each of the following treatments.

Control
fertilized
greenhouse
greenhouse fertilized
shade

Notes: Cassiope was not separated into leaves and stems. Weights for Cassiope were recorded as leaf weights. Only control and fertilized plots were harvested.

Calculations: Units; Tissue mass data are expressed in g/quadrat (400 cm2). Multiply by 25 to get g/m2.

Sampling Description.

Biomass quadrats, size 20x20 cm, were taken from Toolik tussock site. Five quadrats were taken from each of four blocks. All aboveground biomass were clipped in 20x20 cm quadrats. Five quadrats were randomly located along line transects in each of four replicate blocks in each treatment. Aboveground biomass is considered "within" the quadrat if it is associated with a meristem that is within the quadrat. Quadrats were sorted within 24 hours into species and then into tissue type. Depending on the harvest, tissue types can be broad categories, i.e. above and below, or more detailed, i.e. inflorescence, new growth, old growth, etc. Leaf area was measured with a LiCor LI-3000A area meter. Leaf areas for graminoids, deciduous, and forbs were measured immediately after plucking and before drying. Leaf areas for Evergreen species (except Ledum) were measured after drying for 2-4 days. Leaf areas for Ledum were measured after final dry weights were done. Cassiope leaf areas were measured on the unseparated leaves and stems.
The samples were dried at 50-70 degrees C in a drying oven and after several days weighed to nearest milligram. Samples are then returned to Woods Hole for nutrient analysis. Details are given in Shaver and Chapin (Ecological Monographs, 61(1), 1991, pg. 1.)

Sites sampled.

Download a comma delimited (csv) or Excel file (includes metadata and data sheets).

Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy

To cite this data set see the citation example on the LTER Network Data Portal page for this data set.

File 2000gsttbm.csv

Above ground plant... File Details

Office spreadsheet icon 2000gsttbm.xls

Excel file with... File Details

Variables Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)
Date
  • Label: Date
  • Definition: Date of beginning of harvest. The harvest last for 4-5 days.
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Site
  • Label: Site
  • Definition: Site of harvest.
  • Type: Nominal
  • Missing values: None specified
Treatment
  • Label: Treatment
  • Definition: Treatment of plots
  • Type: Nominal
  • Missing values: None specified
Growth Form
  • Label: Growth Form
  • Definition: Growth form of species
  • Type: Nominal
  • Missing values: None specified
Species
  • Label: Species
  • Definition: The species sample or a lumped group. See Notes on lumped species? under this variable for notes on species grouped together.
  • Type: Nominal
  • Missing values: None specified
Tissue
  • Label: Tissue
  • Definition: The tissue type
  • Type: Nominal
  • Missing values: None specified
Biomass Categroy
  • Label: Biomass Categroy
  • Definition: growth category.
  • Type: Nominal
  • Missing values: None specified
B1Q1
  • Label: B1Q1
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name: B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q2
  • Label: B1Q2
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q3
  • Label: B1Q3
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q4
  • Label: B1Q4
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q5
  • Label: B1Q5
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q6
  • Label: B1Q6
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B1Q7
  • Label: B1Q7
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q1
  • Label: B2Q1
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q2
  • Label: B2Q2
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q3
  • Label: B2Q3
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q4
  • Label: B2Q4
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q5
  • Label: B2Q5
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q6
  • Label: B2Q6
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B2Q7
  • Label: B2Q7
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q1
  • Label: B3Q1
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q2
  • Label: B3Q2
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q3
  • Label: B3Q3
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q4
  • Label: B3Q4
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q5
  • Label: B3Q5
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q6
  • Label: B3Q6
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B3Q7
  • Label: B3Q7
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q1
  • Label: B4Q1
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q2
  • Label: B4Q2
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q3
  • Label: B4Q3
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q4
  • Label: B4Q4
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q5
  • Label: B4Q5
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q6
  • Label: B4Q6
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
B4Q7
  • Label: B4Q7
  • Definition: Oven dried weight (gm) of sample collected in a quadrat. Note: only 5 quadrats were collected for controls (Code of variable name:B for block and the number is the block number. The Q stands for quadrat with the number the quadrat number)
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average g per quadrat
  • Label: Average g per quadrat
  • Definition: Average of all quadrats for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Std Err g per quadrat
  • Label: Std Err g per quadrat
  • Definition: Standard Error of the mean for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Count g per quadrat
  • Label: Count g per quadrat
  • Definition: Number of quadrats
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average g per m2
  • Label: Average g per m2
  • Definition: Average of all quadrats expressed as g/m2
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Std Err g per m2
  • Label: Std Err g per m2
  • Definition: Standard error of the mean in g/m2.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%C B1
  • Label: %C B1
  • Definition: Per cent Carbon for lumped sample for block 1.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%N B1
  • Label: %N B1
  • Definition: Per cent Nitrogen for lumped sample for block 1.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%C B2
  • Label: %C B2
  • Definition: Per cent Carbon for lumped sample for block 2.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%N B2
  • Label: %N B2
  • Definition: Per cent Nitrogen for lumped sample for block 2.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%C B3
  • Label: %C B3
  • Definition: Per cent Carbon for lumped sample for block 3.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%N B3
  • Label: %N B3
  • Definition: Per cent Nitrogen for lumped sample for block 3.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%C B4
  • Label: %C B4
  • Definition: Per cent Carbon for lumped sample for block 4.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
%N B4
  • Label: %N B4
  • Definition: Per cent Nitrogen for lumped sample for block 4.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk1 gC/m2
  • Label: Blk1 gC/m2
  • Definition: Grams of carbon per meter square for block 1.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk2 gC/m2
  • Label: Blk2 gC/m2
  • Definition: Grams of carbon per meter square for block 2.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk3 gC/m2
  • Label: Blk3 gC/m2
  • Definition: Grams of carbon per meter square for block 3.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk4 gC/m2
  • Label: Blk4 gC/m2
  • Definition: Grams of carbon per meter square for block 4.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average gC/m2
  • Label: Average gC/m2
  • Definition: Average grams of carbon per meter square for all 4 blocks.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
SERR gC/m2
  • Label: SERR gC/m2
  • Definition: Standard Error grams of carbon per meter square for all 4 blocks.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk1 gN/m2
  • Label: Blk1 gN/m2
  • Definition: Grams of Nitrogen per meter square for block 1.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk2 gN/m2
  • Label: Blk2 gN/m2
  • Definition: Grams of Nitrogen per meter square for block 2.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk3 gN/m2
  • Label: Blk3 gN/m2
  • Definition: Grams of Nitrogen per meter square for block 3.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Blk4 gN/m2
  • Label: Blk4 gN/m2
  • Definition: Grams of Nitrogen per meter square for block 4.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average gN/m2
  • Label: Average gN/m2
  • Definition: Average grams of nitrogen per meter square for all 4 blocks.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
SERR gN/m2
  • Label: SERR gN/m2
  • Definition: Standard Error grams of nitrogen per meter square for all 4 blocks.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Species Comments
  • Label: Species Comments
  • Definition: Notes on lumped species categories.
  • Type: Nominal
  • Missing values: None specified
Comments
  • Label: Comments
  • Definition: Comments about individual samples.
  • Type: Nominal
  • Missing values: None specified