Biomass, nitrogen and carbon of plants in the Arctic LTER experimental wet sedge tundra experimental sites, 2001, Toolik Lake, Alaska.

Abstract: 

Biomass, nitrogen and carbon of plants in the Arctic LTER experimental wet sedge tundra experimental sites, 2001, Toolik Lake, Alaska.. Treatments at each site included factorial NxP, greenhouse and shade house and were begun in 1985 (Sag site) or in 1988 (Toolik sites).

Project Keywords: 

Data set ID: 

1394

EML revision ID: 

12

Short name: 

2001gswsbm_n
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Tuesday, July 24, 2001 to Wednesday, August 1, 2001

Publication Date: 

Sunday, December 12, 2004

Methods: 

Plots were setup as indicated below, with annual fertilization treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate) . Greenhouses and shade houses were annually set up in late May or early June and removed in the end of August or early September.
Sites:
Toolik Inlet “Block 1” (CT, N, P, NP, GH, GHNP, and Shade treatments)
Treatments began summer of 1989; one 5x10m plot/treatment
Toolik Outlet "Block 2" (Same treatments)
Treatments began summer of 1989; one 5x10m plot/treatment
Toolik Outlet "Block 3" (Only CT, N, P and NP)
Treatments began summer of 1989; one 5x10m plot/treatment
Sag River toposequence "Block 4" (CT, N, P, and NP treatments)
Treatments began fall 1985 , 2 replicate plots,
each 2x10 m

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

Reference Citations: Shaver, G. R. and F. S. Chapin, III. 1991. Production/biomass relationships and element cycling in contrasting arctic vegetation types. Ecological Monographs 61:1-31.

Sampling Description.

Biomass quadrats, size 20x20 cm, were randomly located along line transects within plots. For Toolik control and NandP there were d and for GH and GHNP 4 quadrats/plot collected. At the Sag site 4 quadrats//treatment were collected. All aboveground biomass plus belowground stems and rhizomes were clipped in 20x20 cm quadrats. 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. Tissue categories were standard, except for graminoid sheaths. Because some species, especially Carex cordirhiza, included many culms, "sheaths" included culms as well. Leaf Blades were the only other aboveground biomass category for graminoids, so inflorescence also went into the "sheaths" category. This is potentially a problem in analysis, because much of the mass of C. cordirhiza is culms and attached, aboveground sheaths, whereas the "sheath" category for other graminoids is almost entirely belowground and non-green. After several days in the oven samples were 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).

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

File 2001gswsbm_n.csv

Biomass, nitrogen and... File Details

Office spreadsheet icon 2001gswsbm_n.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 sampling in
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Site
  • Label: Site
  • Definition: Tundra site of sampling
  • 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
  • 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.
  • 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = Missing or Not Measured
B1Q5
  • Label: B1Q5
  • 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = Missing or Not Measured
B2Q5
  • Label: B2Q5
  • 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = 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:
    • #N/A = Missing or Not Measured
B3Q5
  • Label: B3Q5
  • 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:
    • #N/A = Missing or Not Measured
Block1 g per m2
  • Label: Block1 g per m2
  • Definition: Average of block 1 quadrats for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Block2 g per m2
  • Label: Block2 g per m2
  • Definition: Average of block 2 quadrats for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Block3 g per m2
  • Label: Block3 g per m2
  • Definition: Average of block 3 quadrats for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Average g per m2
  • Label: Average g per m2
  • Definition: Average of all quadrats for that species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Number of quadrats
  • Label: Number of quadrats
  • Definition: Number of quadrats
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
SERR g per m2
  • Label: SERR g per m2
  • Definition: Standard Error of the mean for species and tissue type.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk1 %N
  • Label: Blk1 %N
  • Definition: Block 1 Nitrogen concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk2 %N
  • Label: Blk2 %N
  • Definition: Block 2 Nitrogen concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk3 %N
  • Label: Blk3 %N
  • Definition: Block3 Nitrogen concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk1 %C
  • Label: Blk1 %C
  • Definition: Block 1 carbon concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk2 %C
  • Label: Blk2 %C
  • Definition: Block 2 carbon concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk3 %C
  • Label: Blk3 %C
  • Definition: Block 3 carbon concentration for that species and tissue type pooled from quadrats in percent.
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk1 gN/m2
  • Label: Blk1 gN/m2
  • Definition: Block 1 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk2 gN/m2
  • Label: Blk2 gN/m2
  • Definition: Block 2 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk3 gN/m2
  • Label: Blk3 gN/m2
  • Definition: Block3 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk1 gC/m2
  • Label: Blk1 gC/m2
  • Definition: Block 1 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk2 gC/m2
  • Label: Blk2 gC/m2
  • Definition: Block 2 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Blk3 gC/m2
  • Label: Blk3 gC/m2
  • Definition: Block 3 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared.
  • Type: Physical quantity
  • Unit: gramPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • #N/A = Missing or Not Measured
Comments
  • Label: Comments
  • Definition: Comments about data.
  • Type: Nominal
  • Missing values: None specified