Arctic LTER Database

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 ID:	1998gsttbm.06
Dataset Title:	Plant biomass in mesic acidic tussock tundra, 1998 15N controls, Toolik, 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:	Bob
Last Name:	McKane
Organization:
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Investigator 3:
First Name:	Loretta
Last Name:	Johnson
Investigator 4:
First Name:	Jim
Last Name:	Laundre
Associate Investigators:
Keywords:	Alaska, biomass, tundra, primary production, organic matter, populations
Abstract:	Five or six 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.
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.1385&urlTail=terrest/biomass/data/1998gsttbm.csv
Data File Name	1998gsttbm
Beginning Date	7/24/1998
End Date	7/31/1998
Number of Data Records	33
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: 11Dec2001 Separated comma delimited data from Excel file. JL
	Version 2: Translated metadata into Excel metada worksheet, added attribute table and title. Jan 2006 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: Added comments in rows to Comments column. Taxonomic coverage data updated. Updated metadata to newer form (with sites sheet). CH March 2013.
	Version 7 Corrected date format JimL 17May13

RESEARCH LOCATION:

Location Name

Mesic Tussock Tundra

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Geographic Description

Toolik Lake, Foothills of Brooks Mountains, Alaska (68 degrees 38'N, 149 degrees 34'W, elevation 760 m) Mesic Tussock Tundra - 1992 15N plots.

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Latitude

68.6223

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Longitude

-149.6099

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Link to Google Map

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TAXONOMIC COVERAGE:
Organisms studied	Forbs; Betula; Carex; Eriophorum vaginatum; Ledum; Lichen; Rubus; Sphagnum; Vaccinium uliginosum; Vaccinium vitis-idaea
Methods:	plots were setup in June 1992 for a 15N experiment. Harvest occurred from 20 July to 25 1998. 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.)

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Date	date of Harvest	datetime		dd-mmm-yy
Site	Site harvested	text
Treatment	Experimental treatment plot.	text
Growth Form	The growth form	text
Species	The species harvested	text
Tissue	The tissue type	text
9B1	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
9B2	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
9B3	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
9B4	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
9B5	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
9B6	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B2	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B8	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B9	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B20	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B24	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
12B25	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B4	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B7	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B13	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B16	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B17	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
13B23	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B2	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B12	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B13	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B15	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B17	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
14B24	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B13	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B16	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B17	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B18	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B19	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
15B21	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B8	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B6	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B11	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B13	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B16	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B18	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B20	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
16B22	25x25cm quadrat with oven dried weight of samples collected	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
Average	Average of all quadrats for that species and tissue type in	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
Std. Err.	Standard Error of the mean for species and tissue type	number	gramPerFourHundredthMeterSquared			NA=Missing or Not Measured
Count	Number of quadrats	number	number			NA=Missing or Not Measured
Average g_m2	Average of all quadrats for that species and tissue type expressed as	number	gramPerMeterSquared			NA=Missing or Not Measured
Std Err g_m2	Standard error of the mean for species and tissue type in	number	gramPerMeterSquared			NA=Missing or Not Measured
Species Comments	Comments on lumped species	text
	Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.