Above ground plant and belowground stem biomass in moist acidic and non-acidic tussock tundra experimental sites, 2001, Arctic LTER, Toolik Lake, Alaska.

Abstract: 

Above ground plant and belowground stem biomass was measured in moist acidic and non-acidic tussock tundra experimental sites. Treatments sampled were control plots and plots amended with nitrogen and phosphorus.

Project Keywords: 

Data set ID: 

1396

EML revision ID: 

16

Short name: 

2001lgshttbm
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Friday, July 20, 2001 to Wednesday, August 1, 2001

Publication Date: 

Sunday, December 12, 2004

Methods: 

Plots at the acidic site (MAT) were set up in July 1996 on extra 5 x 20 meters plots within the four block design of the 1989 LTER acidic tussock experimental plots. On each plot a 5x10 meter section was fenced with large mesh (4-inch square mesh) and within this fence a 5x5-meter plot was fenced with a small mesh (1/2-inch square mesh). In each block two fenced plots were setup: a plot with no fertilizer and a plot with annual fertilization (NP) treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate). In this biomass harvest only the control unfenced (NFCT) and NP unfenced (NFNP) treatments were sampled.
Plots at the non-acidic site (MNT) were setup in July 1997. Three replicate blocks were established with the following annual treatments in 5 x 20 m plots: control (CT), nitrogen added (N), phosphorus added (P) and N and P (NP) in the same amounts as described for the MAT site. Two replicate blocks were established with a greenhouse treatment (GH) and a greenhouse fertilized treatment (GHNP). Greenhouses are annually set up in late May or early June and removed in the end of August or early September. In this harvest only the control and NP treatments were sampled.

Notes: Cassiope tetragona was not separated into leaves and stems prior to drying and weighing; “new stems” includes new leaves and “old stems” includes old leaves.

Calculations: 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 each site. Four quadrats were randomly located along line transects in each of the replicate blocks of 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. The samples were dried at 50-70 degrees C in a drying oven and after several days weighed to nearest milligram. Details are given in Shaver and Chapin (Ecological Monographs, 61(1), 1991, pg. 1-31.)

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 2001lgshttbm.csv

Above ground plant... File Details

Office spreadsheet icon 2001lgshttbm.xls

Above ground plant... 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. Harvests usually last 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: Plot treatment
  • 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 sampled or a lumped group. See ?Notes on lumped species? Under this variable for notes on species grouped together. ?Seedlings? indicates the number and identity of seedlings found in that quadrat. ?Comments? includes additional information about that quadrat.
  • Type: Nominal
  • Missing values: None specified
Tissue
  • Label: Tissue
  • Definition: The tissue type
  • Type: Nominal
  • Missing values: None specified
Biomass Category
  • Label: Biomass Category
  • Definition: growth category of the biomass sample
  • Type: Nominal
  • Missing values: None specified
B1Q1
  • Label: B1Q1
  • Definition: oven dried weight of sample collected in a quadrat. (Code of variable name: B for block and the number following the B is the block number. The Q stands for quadrat with the number following the Q being 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average
  • Label: Average
  • 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.
  • Label: Std. Err.
  • Definition: Standard Error of the mean for 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
  • Label: Count
  • 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/m2
  • Label: Average g/m2
  • Definition: Average of all quadrats expressed as
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Std. Err. g/m2
  • Label: Std. Err. g/m2
  • Definition: Standard error of the mean in
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Species Comments
  • Label: Species Comments
  • Definition: Comments on what species are included in the "Other" categories
  • Type: Nominal
  • Missing values: None specified
Comments
  • Label: Comments
  • Definition: General comments
  • Type: Nominal
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date of beginning of harvest. Harvests usually last 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: Plot treatment
  • 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 sampled or a lumped group. See ?Notes on lumped species? Under this variable for notes on species grouped together. ?Seedlings? indicates the number and identity of seedlings found in that quadrat. ?Comments? includes additional information about that quadrat.
  • Type: Nominal
  • Missing values: None specified
Tissue
  • Label: Tissue
  • Definition: The tissue type
  • Type: Nominal
  • Missing values: None specified
Biomass Category
  • Label: Biomass Category
  • Definition: growth category of the biomass sample
  • Type: Nominal
  • Missing values: None specified
B1Q1
  • Label: B1Q1
  • Definition: oven dried weight of sample collected in a quadrat. (Code of variable name: B for block and the number following the B is the block number. The Q stands for quadrat with the number following the Q being 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • 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 of sample collected in a quadrat
  • Type: Physical quantity
  • Unit: gramPerFourHundredthMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Average
  • Label: Average
  • 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.
  • Label: Std. Err.
  • Definition: Standard Error of the mean for 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
  • Label: Count
  • 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/m2
  • Label: Average g/m2
  • Definition: Average of all quadrats expressed as
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Std. Err. g/m2
  • Label: Std. Err. g/m2
  • Definition: Standard error of the mean in
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • na = Missing or Not Measured
Species Comments
  • Label: Species Comments
  • Definition: Comments on what species are included in the "Other" categories
  • Type: Nominal
  • Missing values: None specified
Comments
  • Label: Comments
  • Definition: General comments
  • Type: Nominal
  • Missing values: None specified