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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:1997lg3sbm.07
Dataset Title:Quadrats were harvested for aboveground biomass from eight plots within a tussock, watertrack, and snowbed community at 3 sites - acidic tundra and nonacidic tundra near Arctic LTER Toolik Plots and acidic tundra near Sagwon,Arctic LTER 1997.
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:Laura
Last Name:Gough
Organization:Department of Biology
Address line 2:Box 19498
City:Arlington
State:Texas
Zip Code:76019
Country:USA
Investigator 3: 
First Name:Jenny
Last Name:Carroll
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 4: 
First Name:Dana
Last Name:Royer
Investigator 5: 
First Name:Erik
Last Name:Jackson
Investigator 6: 
First Name:Jim
Last Name:Laundre
Associate Investigators:
Keywords:Alaska, biomass, productivity, mosses, tundra, species diversity, primary production, organic matter, populations
Abstract:Quadrats were harvested for aboveground biomass from eight plots within a tussock, watertrack, and snowbed community at 3 sites - acidic tundra near Toolik (site of acidic LTER plots), nonacidic tundra near Toolik Lake(site of non-acidic LTER plots), and acidic tundra near Sagwon. All vascular species were sorted, divided into new and old growth, dried, and weighed. Lichens were separated by genus in all quadrats. In half of the quadrats (n=4), mosses were separated by species. Moss and lichen data are presented by species elsewhere (see 97lgmosslichen.txt).
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.1404&urlTail=terrest/biomass/data/1997lg3sbm.csv
Data File Name 1997lg3sbm
Beginning Date 7/25/1997
End Date 8/1/1997
Number of Data Records 401
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Version 2: Created Excel meta data form. Added title and attribute 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 form to new version and eml to 2.1.0 JimL 9Jul2012
Version 6: Taxonomic coverage data updated. Metadata updated to newer form (with sites sheet). CH March 2013.
Version 7: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
 
RESEARCH LOCATION:                                            
Location Name Toolik LTER Moist NonAcidic Tussock Tundra Sagwon 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) nonacidic tundra near Toolik Lake(site of non-acidic LTER plots) near Sagwon (69 degrees 25' N, 148 degrees 40' W 300 m). 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 68.62405 68.6342 69.4166666666667 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 -149.61058 -149.64074 -148.666666666667 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   300 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 View on Google Map                                      
                                             
 
TAXONOMIC COVERAGE:
Organisms studied Andromeda polifolia; Anemone sp.; Antennaria Friesiana; Arctagrostis sp.; Arctostaphylos alpina; Arnica sp.; Betula nana; Calamagrostis sp.; Carex aquatilis; Carex bicolor?; Carex Bigelowii; Carex microchaeta?; Carex sp.; Cassiope tetragona; Claytonia sp.; Dryas integrifolia; Dryas octopetala; Empetrum nigrum; Epilobium latifolium; Equisetum arvense; Equisetum scirpoides; Eriophorum angustifolium; Eriophorum vaginatum; Geum glaciale; Geum sp.; Ledum palustre; Lycopodium sp.; Minuartia obtusiloba?; Papaver sp.; Pedicularis lapponica; Pedicularis sp.; Petasites frigidus; Polygonum bistorta; Polygonum viviparum; Potentilla fruticosa; Poygonum viviparum?; Pyrola grandiflora; Pyrola secunda; Pyrola sp.; Ranunculus lapponicus; Ranunculus sp.; Rhododendron lapponicum; Rubus chamaemorus; Salix fusescens; Salix glauca; Salix phlebophylla; Salix pulchra; Salix reticulata; Salix rotundifolia; Saussurea angustifolia; Saxifraga punctata; Saxifraga sp.; Stellaria sp.; Thalictrum sp.; Tofieldia pusilla; Vaccinium uliginosum; Vaccinium vitis-idaea
 
Methods:Plots were established in homogeneous vegetation in each of the communities at each site. Slope and aspect were as consistent as possible across the site locations. Eight 3 x 3 m plots were established and the corner of focus was chosen randomly. For harvest, a 20 cm x 20 cm quadrat was placed 20 cm away from the corner edges and all aboveground plant material was harvested. In the lab plant material was separated into lichen, moss, and vascular species. Lichens were separated to genus. In 4 quadrats at each community within each site, mosses were separated by species. In the other 4 mosses were lumped for total biomass only. Vascular species had belowground material removed, and were divided into current year?s growth and old growth. Harvesting and separating were conducted from 25 July through 1 August, 1997. All specimens were dried for at least 48 hours at 60 degrees C and weighed. Samples were then returned to Woods Hole, Mass. for nutrient analysis.
Supplemental Harvest (see 1997lgrarespbm.txt): In addition to the above harvest, a separate harvest was conducted in order to determine productivity of rare species not found in at least 4 quadrats per site. These species were selected based on the species measured for leaf level photosynthesis in summer 1997. A 1 m^2 quadrat with 20 x 20 cm areas marked off was used to determine visual percent cover of each of these species within the 9 m2 plots. Subsequently the same quadrat was placed on an area outside the plots, percent cover was estimated, and all aboveground biomass of the targeted species was harvested. This was done 4 times at each site/community for each species. The plant material was then processed in the same way as the other harvest.

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

Sampling Description.

None

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Date Beginning date of harvest. The harvest occurred over a 6 day period. datetime   dd-mmm-yyyy    
Site Site of harvest: LTER Acidic tundra, LTER Non-acidic tundra, and Sagwon acidic tundra. Communities sampled at each site are: Tussock, Snowbed, watertrack text        
Growth Form The growth form text        
Species The species text        
Tissue The tissue type text        
Biomass Category Tissue category for biomass summaries: New above, old above, below, and non-vascular. text        
Q1 Grams of dry tissue per 20x20 cm^2 in Quadrat1 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q2 Grams of dry tissue per 20x20 cm^2 in Quadrat2 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q3 Grams of dry tissue per 20x20 cm^2 in Quadrat3 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q4 Grams of dry tissue per 20x20 cm^2 in Quadrat4 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q5 Grams of dry tissue per 20x20 cm^2 in Quadrat5 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q6 Grams of dry tissue per 20x20 cm^2 in Quadrat6 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q7 Grams of dry tissue per 20x20 cm^2 in Quadrat7 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Q8 Grams of dry tissue per 20x20 cm^2 in Quadrat8 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Average Average of all quadrats for that species and tissue type in Grams of dry per 20x20 cm^2 number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Std. Err. Standard error of the average g per quadrat number gramPerFourHundredthMeterSquared     #N/A=Missing or Not Measured
Count Number of quadrats number number     #N/A=Missing or Not Measured
Average g/m^2 Average of all quadrats expressed as g/m2 number gramPerMeterSquared     #N/A=Missing or Not Measured
StdERR g/m^2 Standard error of average g/m ^2 number gramPerMeterSquared     #N/A=Missing or Not Measured
Count g/m^2 Number of quadrats used for g/m^2 number number     #N/A=Missing or Not Measured

Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.