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Conditions of Use

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml 

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data, Dataset via LTER Data Poral
Dataset ID:2001gswsbm_n.08
Dataset Title:Biomass, nitrogen and carbon of plants in the Arctic LTER experimental wet sedge tundra experimental sites, 2001, Toolik Lake, Alaska.
Investigator 1: 
First Name:Gus
Last Name:Shaver
Organization:Marine Biological Lab
Address line 2:7 MBL St.
Address line 3:
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Jim
Last Name:Laundre
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Associate Investigators:
Keywords:Alaska, biomass, productivity, nitrogen, phosphorus, tundra, wet sedge tundra, primary production, disturbance, inorganic nutrients, organic matter, populations
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).
For questions about the Metadata and data contact the Investigators.
For information about this web site contact:
Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1394&urlTail=terrest/biomass/data/2001gswsbm_n.csv
Data File Name 2001gswsbm_n
Beginning Date 7/24/2001
End Date 8/1/2001
Number of Data Records 434
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: Jan2004 Separated comma delimited data from Excel file. JL
Version 3: : Translated metadata into Excel metada worksheet, added attribute table and title. Jan 2006 Jiml
Version 4: Added LTERNET Data Access server proxy for Excel and comma delimited data files.
Version 5: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
Version 6: Updated metadata form to new version and eml to 2.1.0 JimL 10Jul2012
Version 7: Taxonomic coverage data added. Updated metadata to newer form (with sites sheet). CH March 2013.
Version 8: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
 
RESEARCH LOCATION:                                            
Location Name Toolik Sagavanirktok River Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One  
Geographic Description Toolik Lake(68 degrees 38'N, 149 degrees 34'W, elevation 760 m) North Slope, Alaska, U.S.A. Sagavanirktok River (68 degrees 46'N, 148 degrees 52'W, elevation 470 m) North Slope, Alaska, U.S.A. Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description  
Location Bounding Box                                            
West Bounding Coordinate                                            
East Bounding Coordinate                                            
North Bounding Coordinate                                            
South Bounding Coordinate                                            
OR if single point location                                            
Latitude 68.62538 68.7608 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.60248 -148.83906 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation 760 470 In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters  
Link to Google Map View on Google Map View on Google Map                                        
                                             
 
TAXONOMIC COVERAGE:
Organisms studied Betula; Carex cordirhiza; Carex rotundata; Eriophorum; Eriophorum angustifolium; Eriophorum scheuchzeri; Polygonum; Sphagnum ; Trichophorum
 
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.)

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Date Date of sampling in datetime   dd-mmm-yyyy    
Site Tundra site of sampling text        
Treatment plot treatment text        
Growth Form Growth form of species text        
Species The species text        
Tissue The tissue type text        
Biomass Category growth category. text        
B1Q1 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) number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q2 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q3 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q4 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q5 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q1 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q2 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q3 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q4 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q5 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q1 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q2 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q3 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q4 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q5 oven dried weight of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Block1 g per m2 Average of block 1 quadrats for that species and tissue type. number gramPerMeterSquared     #N/A=Missing or Not Measured
Block2 g per m2 Average of block 2 quadrats for that species and tissue type. number gramPerMeterSquared     #N/A=Missing or Not Measured
Block3 g per m2 Average of block 3 quadrats for that species and tissue type. number gramPerMeterSquared     #N/A=Missing or Not Measured
Average g per m2 Average of all quadrats for that species and tissue type. number gramPerMeterSquared     #N/A=Missing or Not Measured
Number of quadrats Number of quadrats number number     #N/A=Missing or Not Measured
SERR g per m2 Standard Error of the mean for species and tissue type. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk1 %N Block 1 Nitrogen concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk2 %N Block 2 Nitrogen concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk3 %N Block3 Nitrogen concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk1 %C Block 1 carbon concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk2 %C Block 2 carbon concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk3 %C Block 3 carbon concentration for that species and tissue type pooled from quadrats in percent. number percent     #N/A=Missing or Not Measured
Blk1 gN/m2 Block 1 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk2 gN/m2 Block 2 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk3 gN/m2 Block3 Nitrogen concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk1 gC/m2 Block 1 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk2 gC/m2 Block 2 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Blk3 gC/m2 Block 3 carbon concentration for that species and tissue type pooled from quadrats in grams nitorgen per meter squared. number gramPerMeterSquared     #N/A=Missing or Not Measured
Comments Comments about data. text        

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