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:	1995gsttbm.06
Dataset Title:	Above ground plant biomass and leaf area of moist acidic tussock tundra 1981 experimental site, Toolik Lake, Alaska. ArcticLTEr 1995.
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:
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Investigator 3:
First Name:	Bonnie
Last Name:	Kwiatkowski
Investigator 4:
First Name:	Jill
Last Name:	Johnstone
Investigator 5:
First Name:	Andreas
Last Name:	Charez
Investigator 6:
First Name:	Jennifer
Last Name:	Zoerner
Investigator 7:
First Name:	Kathy
Last Name:	Regan
Investigator 8:
First Name:	Tad
Last Name:	Gunkelman
Investigator 9:
First Name:	Joanna
Last Name:	Wagner
Investigator 10:
First Name:	Alannah
Last Name:	Naber
Associate Investigators:
Keywords:	Alaska, biomass, productivity, nitrogen, phosphorus, tundra, primary production, disturbance, inorganic nutrients, organic matter, populations
Abstract:	Above ground plant biomass and leaf area were measured in a tussock tundra experimental site. The plots were set up in 1981 and have been harvested in previous years (See Shaver and Chapin Ecological Monographs, 61, 1991 pp.1-31).
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.1383&urlTail=terrest/biomass/data/1995gsttbm.csv
Data File Name	1995gsttbm
Beginning Date	7/24/1995
End Date	8/1/1995
Number of Data Records	98
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Log of changes: 8Jan98 Separated comma delimited data from Excel file. JL
	Vrsion 2: Added attribute table and title. Jan2006 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. Updated metadata to newer form (with sites sheet). CH March 2013.

RESEARCH LOCATION:

Location Name

LTER Moist Acidic Tussock Tundra 1981 plots

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Geographic Description

Toolik Lake (68 degrees 38'N, 149 degrees 34'W, elevation 760 m) (68 degrees 38N, 149 degrees 34W) Tussock Tundra - 1981 plots, control and NP fertilized.

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Latitude

68.6295

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Longitude

-149.578

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Elevation

755

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Link to Google Map

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TAXONOMIC COVERAGE:
Organisms studied	Betula; Carex; Eriophorum vaginatum; Hylocomium; Ledum; Rubus; Salix spp.; Sphagnum; Vaccinium uliginosum; Vaccinium vitis-idaea;
Methods:	Plots were setup in June 1980 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. Greenhouses and shade houses were discontinued in 1989. There are 4 replicate blocks, each containing 1 replicate of each of the following treatments. Control fertilized greenhouse greenhouse fertilized shade Notes: Cassiope was not separated into leaves and stems. Weights for Cassiope were recorded as leaf weights. Calculations: Units - Tissue mass data are expressed in g/quadrat (400 cm2). Multiply by 25 to get g/m2. Leaf blade areas are in cm2/quadrat. Multiply by .0025 to get m2 leaf/m2 ground. 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 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. Leaf area was measured with a LiCor LI-3000A area meter. Leaf areas for graminoids, deciduous, and forbs were measured immediately after plucking and before drying. Leaf areas for Evergreen species (except Ledum) were measured after drying for 2-4 days. Leaf areas for Ledum were measured after final dry weights were done. Cassiope leaf areas were measured on the unseparated leaves and stems. The samples were dried at 50-70 degrees C in a drying oven and after several days 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
Treatment	Experimental treatment plot. See methods for description.	text
Growth Form	The growth form	text
Species	The species	text
Tissue	The tissue type	text
B1Q1	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. Oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B1Q2	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B1Q3	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B1Q4	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B1Q5	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B2Q1	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B2Q2	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B2Q3	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B2Q4	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B2Q5	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B3Q1	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B3Q2	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B3Q3	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B3Q4	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B3Q5	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B4Q1	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B4Q2	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B4Q3	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B4Q4	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
B4Q5	oven dried weight of sample collected in a quadrat	number	gramPerFourHundredthMeterSquared			#N/A
Average gm/quad	Average of all quadrats for that species and tissue type	number	gramPerFourHundredthMeterSquared			#N/A
Std. Err.	Standard Error of the mean for species and tissue type	number	gramPerFourHundredthMeterSquared			#N/A
Count	Number of quadrats	number	number			#N/A
Average gm/m2	Average of all quadrats expressed as	number	gramPerMeterSquared			#N/A
Std. Err. gm/m2	Standard error of the mean in	number	gramPerMeterSquared			#N/A
B1Q1LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B1Q2LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B1Q3LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B1Q4LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B1Q5LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B2Q1LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B2Q2LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B2Q3LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B2Q4LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B2Q5LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B3Q1LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B3Q2LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B3Q3LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B3Q4LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B3Q5LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B4Q1LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B4Q2LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B4Q3LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B4Q4LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
B4Q5LeafArea	leaf area (cm^2) of sample collected in a quadrat	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
AverageLeafArea	Average of all quadrats for that species and tissue type.	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
Std Err.LeafArea	Standard Error of the mean for species and tissue type.	number	centimeterSquaredPerFourHundredthMeterSquared			#N/A
CountLeafArea	Number of quadrats	number	number			#N/A
Average, m2/m2LeafArea	Average of all quadrats expressed as m2/m2	number	meterSquaredPerMeterSquared			#N/A
SE, m2/m2LeafArea	Standard error of the mean in m2/m2.	number	meterSquaredPerMeterSquared			#N/A
	Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.