June and August plant biomass in mesic acidic tussock tundra, 1992, Arctic LTER, Toolik Lake, Alaska.


Quadrats (20cm x 20cm squares) along a line (block) were collected for plant biomass in mesic tussock tundra. In the lab each quadrat was separated into individual species, new and old aboveground and belowground biomass. Two harvests were completed, June and a late July. These are control plots from an experiment setup for a 15N experiment.

Project Keywords: 

Data set ID: 


EML revision ID: 

Published on EDI/LTER Data Portal


Shaver, G. 1996. June and August plant biomass in mesic acidic tussock tundra, 1992, Arctic LTER, Toolik Lake, Alaska. Environmental Data Initiative. http://dx.doi.org/10.6073/pasta/e4c9bbe7ff8627cf706780e48aa3462a



Additional People: 

Associated Researcher
Associated Researcher
Associated Researcher

Date Range: 

Saturday, June 27, 1992 to Monday, August 10, 1992

Publication Date: 



Plots were setup in June 1992 for a 15N experiment. Two harvests were completed, June and a late July. In June 5 quadrats per block were done while in August there was only 4 quadrats per block.

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

Sampling Description.

Quadrats, 20x20 cm, were collected and sorted into species and then into tissue type. Aboveground biomass is considered "within" the quadrat if it is associated with a meristem that is within the quadrat. 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, belowground rhizomes, etc. In most cases only large rhizomes and belowground stems are ever measured. The samples are dried at 50-70 degrees C and a 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.)

Version Changes: 

Log of changes:

11Dec2001 Separated comma delimited data from Excel file. JL
29Oct2004. Completed the variable descriptions and added a Title. JL
Version2: Created Excel metadata form. Changed title and added attribut table. 10Jan06 JimL
Version 3: Added LTERNET Data Access server proxy for Excel and comma delimited data files.
Version 4: Update 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. Updated metadata 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
Version 8: Changed Distribution URL since the LTER network DAS system is being discontinued. JimL 9Apr2015

Sites sampled.

Full Metadata and data files (either comma delimited (csv) or Excel) - Environmental Data Initiative repository.

Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy