Arctic LTER

Weather at Toolik

Arctic LTER Database

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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:	20032005gsimplant.03
Dataset Title:	Bulk concentration and isotopic information of plant C and N in green leaves and tissues collected from Imnavait watershed during 2003-2005
Investigator 1:
First Name:	Gus
Last Name:	Shaver
Organization:	Ecosystems Center
Address line 2:	Marine Biological Lab
Address line 3:
City:	Woods Hole
State:	MA
Zip Code:	02543
Country:	USA
Investigator 2:
First Name:	Yuriko
Last Name:	Yano
Organization:	Ecosystems Center
Address line 2:	Marine Biological Lab
City:	Woods Hole
State:	MA
Zip Code:	02543
Country:	USA
Investigator 3:
First Name:	Anne
Last Name:	Giblin
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Investigator 4:
First Name:	Ed
Last Name:	Rastteter
Investigator 5:
First Name:	Knute
Last Name:	Nadelhoffer
Investigator 6:
First Name:	Christie
Last Name:	Haupert
Associate Investigators:
Keywords:	plant C, plant N, d13C, d15N, C-to-N ratio, isotope, primary production, inorganic nutrients, organic matter
Abstract:	Changes in total C and N, d13C and d15N, C:N ratio in green leaves and parts of mosses (for sphagnum, both red and green tips were included) over time since 15NH4 addition in Imnavait watershed.
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.10052&urlTail=terrest/biomass/data/20032005gsimplant.csv
Data File Name	20032005gsimplant.dat
Beginning Date	7/1/2003
End Date	7/20/2005
Number of Data Records	414
Other Files to Reference
Availability Status	1
Quality Control Information
Maintenance Description
Log of Changes:	Version1 Dec 2009 Received data from Yuiko Jiml
	Version 2: Updated metadata form to new version and eml to 2.1.0 JimL 10Jul2012
	Version 3: Updated to newer metadata form (with sites sheet). Taxonomic coverage data updated. CH March 2013.

RESEARCH LOCATION:

Location Name

Imnavait watershed- eastern slope

Select Site or enter New One

Geographic Description

Eastern slope of Imnavait watershed. ~1km south of main weir, ~4 km south of Dalton Hwy.

Enter Description

Location Bounding Box

West Bounding Coordinate

East Bounding Coordinate

North Bounding Coordinate

South Bounding Coordinate

OR if single point location

Latitude

68.6081

In Decimal Degrees

Longitude

-149.3078

In Decimal Degrees

Elevation

In Meters

Link to Google Map

View on Google Map


TAXONOMIC COVERAGE:
Organisms studied	Arctostaph; Betula; Carex; Cassiope; Eriphorum vaginatum; Empetrum; Feather moss; Ledum; Luzula; Peltigera; Polygonum; Rubus; Salix; Sphagnum; Vaccinium uliginosum.; Vaccinium vitis-idaea

Methods:	Prior to 15N addition on 1-Jul-2003, green leaves and parts of mosses (for Sphagnum spp, both red and green parts were included) of the dominant species were collected from areas adjacent to the 15N addition plots (3m x 6m). After the 15N addition, the same tissues were collected from within the plots 1 and 2 yr later. Within 12 hrs of collection, plant samples were separated by species and tissue type and were dried at 50ºC. Prior to post-15N addition sampling, multiple band-transects (each transect = 1m x 6m) were established directly below each labeled plot. The transects ran perpendicular to the hill slope with the upper side (i.e., a side closer to the crest) of each band-transect located at 1, 5, 10, 13, or 15 m from the lower side (i.e., a side closer to the creek) of the labeled plots. Plant samples were taken from >5 randomly selected spots within the plot or transect and combined by plot or transect prior to sorting.

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Date	sampling date	datetime		dd-mmm-yyyy
Topo	Topolocation at which 15N treatment plots were established and soilcores collected. The 15N treatment plots are located along the hillslope (CR=crest; MS=mid-slope; FS=foot-slope; R=riparian wetsedge)	text
WT	Whether the tundra has watertrack or not. WT = watertrack tussock; NWT= non-watertrack tussock; "." = non tussock tundra.	text
Plot	15N addition plot ID	text
Location	Locations each plant type was collected. adj=adjacent to 15N plot (reference sample); 0= within 15N plot; 1, 5, 13, or 15= distance (m) of transect from the 15N addition plots.	text
Smpl_ID	Names of species or plant types	text
Pct_C	C content in bulk soil % (w/w)	number	percent
d13C	del-13C values v.s. PDB	number	dimensionless
Pct_N	N content in bulk soil % (w/w)	number	percent
d15N	del-15N values v.s. air	number	dimensionless
CN_mol	molar C:N ratio	number	number

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