Arctic LTER

Weather at Toolik

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:	1997lgrarespbm.06
Dataset Title:	A harvest was conducted to determine productivity of rare species not found in at least 4 quadrats per site in a separate small quadrat aboveground biomass harvest (see 1997lg3sbm.txt), 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:
Address line 2:
City:
State:
Zip Code:
Country:
Investigator 3:
First Name:	Jenny
Last Name:	Carroll
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, tundra, species diversity, primary production, organic matter, populations
Abstract:	A harvest was conducted to determine productivity of rare species not found in at least 4 quadrats per site in a separate small quadrat aboveground biomass harvest (see 97lg3sbm.txt). Harvests occurred in 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. 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.1405&urlTail=terrest/biomass/data/1997lgrarespbm.csv
Data File Name	1997lgrarespbm
Beginning Date	7/25/1997
End Date	8/1/1997
Number of Data Records	52
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Version 2: Created Excel metadata form. Added title and atrribute 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. Updated metadata to newer form (with sites sheet). CH March 2013.

RESEARCH LOCATION:

Location Name

Toolik

LTER Moist NonAcidic Tussock Tundra

Sagwon

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

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

Longitude

-149.61058

-149.64074

-148.666666666667

In Decimal Degrees

Elevation

760

300

In Meters

Link to Google Map

View on Google Map


TAXONOMIC COVERAGE:
Organisms studied	Andromeda polifolia; Arctagrostis latifolia; Arctostaphylos alpina; Betula nana; Cassiope tetragona; Eriophorum vaginatum; Ledum palustre; Polygonum bistorta; Potentilla fruticosa; Rubus chamaemorus; Salix pulchra; Salix reticulata; Salix rotundifolia; Vaccinium uliginosum; Vaccinium vitis-idaea

Methods:	A separate harvest was conducted in order to determine productivity of rare species not found in at least 4 quadrats per site in a separate aboveground biomass harvest (see 97lg3sbm.txt). These species were selected based on the species measured for leaf level photosynthesis in summer 1997. A 1 m^2 quadrat divided into 20 x 20 cm areas 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 (targeted for the species), 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. 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. 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. Notes: The 1 square meter plots were not representative of the species area extent since the plot was selected based on the presence of the species. Calculations: Rare species biomass was estimated from the species? percent cover in a 9 m^2 plot. All of a plant?s above ground biomass was harvested in a 1 square meter plot. The biomass was divided by the percent cover in the square meter plot and then scaled by the percent cover in the 9 square meter plots. The 1 square meter plots were not representative of a species? area extent since the plot was selected based on the presence of the species. 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
Community	Tussock, snowbed or water track tundra	text
Species	The species	text
Biomass Category	Tissue category for biomass summaries: New above, old above, below, and non-vascular.	text
g _m2Q1	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q2	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q3	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q4	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q5	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q6	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q7	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
g _m2Q8	Estimated g/m^2 per 9 m2 plot.	number	gramPerMeterSquared			#N/A
mean g_m2	Average of all quadrats for that species and tissue type in g/m^2	number	gramPerMeterSquared			#N/A

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