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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:1983gsttbm.08
Dataset Title:Seasonal plant biomass moist acidic tussock tundra, 1983, Arctic LTER, 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:Terry
Last Name:Chapin
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Associate Investigators:
Keywords:Alaska, tundra, biomass, primary production, disturbance, inorganic nutrients, organic matter, populations
Abstract:Biomass in tussock tundra experimental plots near Toolik Lake, North Slope, AK (68 degrees 38N, 149derees 34W). There were five harvests in 1983. This file is the May 21-22, 1983 harvest.
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.1374&urlTail=terrest/biomass/data/1983gsttbm.csv
Data File Name 1983gsttbm
Beginning Date 5/21/1983
End Date 8/23/1983
Number of Data Records 928
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: 5Apr95. Added comma delimited data and document to database. Original file is in excel 5,. JimL. Nov2004. Combined the 5 harvest into one file and completed the variable description. JL
Version2: Creaded Excel metadata form. Changed title, filename to full year and added attribut table. 10Jan06 JimL
Version 3: Added LTERNET Data Access server proxy for Excel and comma delimited data files.
Version 4: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
Version 5: Updated the metadata sheet and eml to 2.1
Version 6: Taxonomic coverage data updated. Updated to newer metadata form (with sites sheet). CH March 2013.
Version 7: updated site info to reflect description (1981 plots)
Version 8: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
 
RESEARCH LOCATION:                                            
Location Name LTER Moist Acidic Tussock Tundra 1981 plots 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 Select Site or enter New One  
Geographic Description Toolik Lake Field Station 1981 moist acidic tundra, North Slope of Alaska 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 Enter Description  
Location Bounding Box                                            
West Bounding Coordinate                                            
East Bounding Coordinate                                            
North Bounding Coordinate                                            
South Bounding Coordinate                                            
OR if single point location                                            
Latitude 68.6295 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 In Decimal Degrees  
Longitude -149.578 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 In Decimal Degrees  
Elevation 755 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 In Meters  
Link to Google Map View on Google Map                                          
                                             
 
TAXONOMIC COVERAGE:
Organisms studied Betula nana; Carex bigelowii; Eriophorum vaginatum; Forbs spp. ; Ledum palustre; Rubus chamaemorus; Vaccinium vitis-idaea
 
Methods:Plots were setup in June 1981 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. There are 4 replicate blocks, each containing 1 replicate of each of the following treatments.
Control (CT)
Fertilized (NP)
Greenhouse (GH)
Greenhouse fertilized (GHNP)
Shade (SH)

Notes: For 1983-84 harvests in the original file, Quadrats Q1 - Q5=Block 1, Q6 - Q10=B2, Q11 - Q15=B3, Q16 - Q20=B4. For example, Q6 from 1983 is the same as B2Q1 in 1989. In this file the quadrats were renamed to B1Q1 style where the number following the B is block number and the number following Q is quadrat number.
Missing values are represented with blank spaces.

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 plus belowground stems and rhizomes 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. inflorescences, new growth, old growth, etc. They were then dried at 50-70 degrees C in a drying oven. 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.)
There were five harvests in 1983. Below are the original harvest numbers, harvest dates and the old filenames. The data was combined in 2004 with all the harvest now in file 1983gsttbm.xls
Harvest Treatment Date Old Filename = Filename May 1994

4 control May 21, 22, 1983 TLK83CT4.wkq 83gsttb4.xls
4 fertilized May 21, 22, 1983 TLK83FT4.wkq 83gsttb4.xls
4 greenhouse May 23-25, 1983 TLK83GH4.wkq 83gsttb4.xls
4 greenhouse fert. May 23-25, 1983 TK83GHF4.wkq 83gsttb4.xls
4 shade May 22, 24, 25, 1983 TLK83SH4.wkq 83gsttb4.xls
5 control June 14, 15, 1983 TLK83CT5.wkq 83gsttb5.xls
5 fertilized June 16, 17, 1983 TLK83FT5.wkq 83gsttb5.xls
6 control July 1-4, 1983 TLK83CT6.wkq 83gsttb6.xls
6 fertilized July 1-4, 1983 TLK83FT6.wkq 83gsttb6.xls
7 control July 26, 27, 31, 1983 TLK83CT7.wkq 83gsttb7.xls
7 fertilized July 26-28, Aug.1, 83 TLK83FT7.wkq 83gsttb7.xls
7 greenhouse July 28-30, Aug. 2-3, 83 TLK83GH7.wkq 83gsttb7.xls
7 greenhouse fert. July 28, 29, Aug. 2-4, 83 TK83GHF7.wkq 83gsttb7.xls
7 shade July 30-31, Aug. 3-4, 83 TLK83SH7.wkq 83gsttb7.xls
8 control August 20-22, 1983 TLK83CT8.wkq 83gsttb8.xls
8 fertilized August 22, 23, 1983 TLK83FT8.wkq 83gsttb8.xls
DATA ENTRY:
Data were entered into Quattro spreadsheets as weights in grams, to the nearest milligram. Categories are same as on data sheets
Missing values are represented with blank spaces.
Tissue categories codes: v0 is a new graminoid tiller that does not have any green tip. CYS is graminoid current year senescence.
Biomass categories:
New Above: includes blade, sheath, v0, CYS blade, CYS sheath, inflorescence, inflorescence bud, new leaves, new stems, and new above (for Forbs and mosses).
Old Above: includes old leaves and old stems.
Below: includes below stems, rhizome and below (for forbs).

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Date Dates that plot was sampled. This is the average date. Harvests typically last 4-5 days. See methods for detail harvest dates. datetime   dd-mmm-yyyy    
Site Site of harvest text        
Treatment Experimental treatment plot. See methods for description. text        
Growth Form Growth form of plant species text        
Species Plant species or lumped group of species sampled. text        
Tissue Type of plant part sampled. text        
Biomass Categroy Biomass category used for subtotals. See methods for more information text        
B1Q1 Oven dried weight (60 degrees C) of sample collected in a quadrat. The B stands for block and the number following the B is the block number. The Q stands for quadrat, with the number following the Q the quadrat number. number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q2 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q3 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q4 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B1Q5 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q1 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q2 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q3 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q4 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B2Q5 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q1 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q2 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q3 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q4 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B3Q5 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B4Q1 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B4Q2 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B4Q3 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B4Q4 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
B4Q5 Oven dried weight (60 degrees C) of sample collected in a quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Average The average of all quadrats for that species and tissue type number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Std. Err. The Standard Error of the average number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Count The number of samples used to calculate the Average and Std. Err. number number     #N/A=Missing or Not Measured
B1Q1gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B1Q2gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B1Q3gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B1Q4gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B1Q5gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B2Q1gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B2Q2gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B2Q3gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B2Q4gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B2Q5gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B3Q1gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B3Q2gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B3Q3gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B3Q4gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B3Q5gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B4Q1gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B4Q2gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B4Q3gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B4Q4gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
B4Q5gm2 Biomass in quadrat converted to g/m^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
Average g/m^2 The average of all quadrats for that species and tissue type number gramPerMeterSquared     #N/A=Missing or Not Measured
StdERR g/m^2 The Standard Error of the average number gramPerMeterSquared     #N/A=Missing or Not Measured
Count g/m^2 The number of samples used to calculate the Average and Std. Err. number number     #N/A=Missing or Not Measured

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