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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 

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.


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 via LTER Data Portal
Dataset ID:2011_EVRT1980_MassPerTiller.03
Dataset Title:Mass per tiller, nitrogen concentration, stable isotope ratios for C and N from the 1980-82 Eriophorum vaginatum reciprocal transplant experiment collected in July, 2011.
Investigator 1: 
First Name:Ned
Last Name:Fetcher
Organization:Wilkes University
Address line 2:Institute for Environmental Science and Sustainability
Address line 3:84. W. South St.
Zip Code:18766
Investigator 2: 
First Name:James
Last Name:McGraw
Organization:West Virginia University
Address line 2:Department of Biology
Address line 3:53 Campus Drive
Zip Code:26505
Investigator 3: 
First Name:Gaius
Last Name:Shaver
Organization:Marine Biological Laboratory
Address line 2:The Ecosystem Center
Address line 3:
City:Woods Hole
Zip Code:
Associate Investigators:
Keywords:Mass per tiller, biomass, nitrogen, delta 13C, delta 15N, 1980 Eriophorum vaginatum transplant experiment, reciprocal transplant, populationsEagle Creek, No name Creek, Coldfoot, Toolik Field Station
Abstract: These data were collected for tussocks transplanted in 1980-82 in a reciprocal transplant experiment and harvested in 2011. Important variables are garden name, source population, mass per tiller, nitrogen concentration, and stable isotope ratios for C and N.
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
Online URL:
Data File URL
Data File Name 2011_EVRT1980_MassPerTiller
Beginning Date 7/19/2011
End Date 7/24/2011
Number of Data Records 264
Other Files to Reference
Availability Status 1
Quality Control Information Data has been checked
Maintenance Description
Log of Changes: Version 1: Metadata entered into new sheet (NF), uploaded to Pasta (JD-Dec.2013)
Version 2: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 24Jan14
Version 3: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 27Jan14
RESEARCH LOCATION:                  
Location Name Eagle Creek Transplant Garden No Name Creek Transplant Garden Coldfoot Transplant Garden Toolik Lake Transplant Garden Sagwon Transplant Garden Prudhoe Bay Transplant Garden Select Site or enter New One Select Site or enter New One  
Geographic Description Eagle Creek Tussock Tundra Site on hillside above Eagle Creek at Mile 101 of the Steece Highway; garden is about 500 m upslope from an old berm created by bulldozer. Coordinates are approximate. Coordinates and elevation for all sites are from Google Earth. The garden is in the middle of giant tussocks 100 m north and 165 m west of the bridge that crosses No Name Creek on the Dalton Highway. Access is easier by going along No Creek for 165 m and then heading north. The garden is 100 m north of the edge of the forest and 190 m east of the Dalton Highway. The garden is in the complex of "historic sites" at Toolik Lake. The garden is 50 m north of the upper parking area at the Sagwon Overlook pulloff. Site formerly known as MS 127. The garden is 1.5 km west of the Kuparuk Bridge and 420 m north of the road on the east bank of a stream. Note: Permission from BP and oil field safety training required to access this site. Enter Description Enter Description  
Location Bounding Box                  
West Bounding Coordinate                  
East Bounding Coordinate                  
North Bounding Coordinate                  
South Bounding Coordinate                  
OR if single point location                  
Latitude 65.433665 66.116744 67.258973 68.629538 69.424431 70.328353 In Decimal Degrees In Decimal Degrees  
Longitude -145.514261 -150.169792 -150.169153 -149.579858 -148.709647 -149.062722 In Decimal Degrees In Decimal Degrees  
Elevation 762 167 319 759 269 8 In Meters In Meters  
Link to Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map View on Google Map      
Organisms studied Eriophorum vaginatum
Methods:In 1980-1982, six transplant gardens were established along a latitudinal gradient in interior Alaska from Eagle Creek, AK in the south to Prudhoe Bay, AK in the north (Shaver et al. 1986) .Three sites, Toolik Lake (TL), Sagwon (SAG), and Prudhoe Bay (PB) are north of the continental divide and the remaining three, Eagle Creek (EC), No Name Creek (NN), and Coldfoot (CF), are south of the continental divide. Each garden consisted of 10 individual tussocks transplanted back to their home-site, as well as 10 individuals from each of the other transplant sites (n = 10; 6 populations x 6 sites x 10 replicates = 360 total individuals). Of the original population of tussocks, 264 were harvested in 2011. For tussocks with >
25 tillers, 25 tillers were collected for measurements of biomass/tiller. For tussocks with = 25 tillers, all of the tillers were used for these measurements. Samples were dried for 48 hr at 65C, and weighed. Total mass of the sample was divided by number of tillers to give mass/tiller.

After weighing, the dried samples were processed for stable isotope analysis at the Stable Isotope Facility of the University of California at Davis. Sample preparation followed SIF-recommended protocols ( The tissue was ground in a ball mall and four mg were weighed into a tin capsule and sent to the facility. The SIF analyzed the sample. for 13C and 15N using a PDZ Europa ANCA-GSL elemental analyzer connected to a PDZ Europa 20-20 continuous flow isotope ratio mass spectrometer. Stable isotope ratios (d13C and d15N) are reported relative to Vienna PeeDee Belemnite and air, respectively.

Shaver GR, Fetcher N, Chapin FS (1986) Growth and flowering in Eriophorum vaginatum - Annual and latitudinal variation. Ecology 67:1524-1535

Funding for this research was provided by National Science Foundation grant ARC-0908936 with additional support from NSF-BSR-9024188.
Mass per tiller data are incorporated in a ms. submitted to Botany. Nutrient and stable isotope data are still unpublished.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Garden Name of the transplant garden: EC, Eagle Creek; NN, No Name Creek; CF, Coldfoot; TL, Toolik Lake; SAG, Sagwon; PB, Prudhoe Bay text        
Source Name of the source population: EC, Eagle Creek; NN, No Name Creek; CF, Coldfoot; TL, Toolik Lake; SAG, Sagwon; PB, Prudhoe Bay text        
Tussock Number of tussock number dimensionless     .=missing
No. Tillers Number of tillers in sample number dimensionless     .=missing
Total Biomass (g) Mass of sample number gram     .=missing
Mass/Tiller (g) Mass of sample/Number of tillers in sample number gram     .=missing
Date Harvested Date of Harvest datetime   DD-MMM-YYYY   .=missing
IsotopeSampleMass(mg) Mass of sample sent for stable isotope analysis number milligram     .=missing
d13C delta 13 carbon number partPerThousand     .=missing
C_Mass(ug) Mass of carbon in isotope sample number microgram     .=missing
d15N delta 15 nitrogen number partPerThousand     .=missing
N_Mass(ug) Mass of nitrogen in isotope sample number microgram     .=missing
[N] Concentration of nitrogen number percent     .=missing
[C] Concentration of carbon number percent     .=missing
Isotope Comment Comment from isotope analysis text        

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