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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 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 via LTER Data Poral
Dataset ID:96gsgrow.05
Dataset Title:Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site, Arctic LTER 1996, Toolik Lake, AK.
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:Marine Biological Lab
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Andrew
Last Name:Gould
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Investigator 3: 
First Name:Jim
Last Name:Laundre
Associate Investigators:
Keywords:Alaska, leaf growth, tundra, disturbance, populations
Abstract:Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site near Toolik Lake, AK. Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989 (Toolik sites).
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.1415&urlTail=terrest/phengwth/data/96gsgrow.csv
Data File Name 96gsgrow
Beginning Date 6/1/1996
End Date 9/1/1996
Number of Data Records 640
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Version 1 10Oct96 Checked and organized data for comma delimited output. JL
Version 2: updated attribute table and add DAS
Version 3: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
Version 4: Updated metadata form to newer version (without site sheet). Fixed discrepency with header variable names. CH 24 Jan 2013 Updated to newer metadata with site sheet. CH March 2013.
Version 5: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 17Feb14
 
RESEARCH LOCATION:                                            
Location Name LTER Wet Sedge Tundra Block 1 LTER Wet Sedge Tundra Block 2 Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One  
Geographic Description Wet Sedge Block 1 Wet Sedge block 2 Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description 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 68.625388 68.647622 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.602481 -149.577298 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation 717 719 In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters In Meters  
Link to Google Map View on Google Map View on Google Map                                        
                                             
 
TAXONOMIC COVERAGE:
Organisms studied Eriophorum angustifolium; Carex rotundata
 
Methods:Plots were setup as indicated below, with annual fertilization treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate) . Greenhouses and shadehouses were annually set up in late May or early June and removed in the end of August or early September.
Sites: Block 1 - Toolik Inlet (CT, N, P, NP, GH, GHNP, and Shade treatments)
Indicated as "Block 1"
Treatments began summer of 1989; one 5x10m
plot/treatment
Block 2 - Toolik Outlet (Same treatments)
"Block 2"
Treatments began summer of 1989; one 5x10m
plot/treatment

Notes: When measurements stopped due to tiller death or herbivory are marked with #N/A. Where cells where there are no values zeros are used. In cases where the total leaf length was unknown because of broken leaf tips the longest previous leaf length was used. In most cases these leaves had stopped growing.

Sampling Description.

Five individuals of each species in the control (CT), nitrogen and phosphorus fertilization (NP), greenhouse (GH), and greenhouse with nitrogen and phosphorus fertilization(GHNP) were randomly selected at each block. The tillers were tagged and labeled, with individuals numbered 1-5 at Block 1 and those number 6-10 at Block 2 The older leaves that had no visible green tissue were clipped at the base to equal lengths. The clipped leaves were used as the 0 point to measure the total length and green length of all of the remaining leaves. These measurements were taken every 10-12 days, with broken leaves, herbivory, and flower exertion noted.
(12) CALCULATIONS
All measurements are expressed in centimeters.
TTL was determined by adding together the total leaf lengths of all leaves at each survey date.
TGL was determined by adding together the green leaf lengths of all leaves at each survey date.
TSL was calculated by subtracting TTL from TGL.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
Species Plant species measured. text        
Date Dates that tiller was measured. datetime   dd-mmm-yyyy    
Tiller Experimental treatment and sampling number. See methods for description. text        
LF1T The total length of leaf number 1 number centimeter     #N/A=Missing or Not Measured
LF1G The green length of leaf number 1 number centimeter     #N/A=Missing or Not Measured
LF2T The total length of leaf number 2 number centimeter     #N/A=Missing or Not Measured
LF2G The green length of leaf number 2 number centimeter     #N/A=Missing or Not Measured
LF3T The total length of leaf number 3 number centimeter     #N/A=Missing or Not Measured
LF3G The green length of leaf number 3 number centimeter     #N/A=Missing or Not Measured
LF4T The total length of leaf number 4 number centimeter     #N/A=Missing or Not Measured
LF4G The green length of leaf number 4 number centimeter     #N/A=Missing or Not Measured
LF5T The total length of leaf number 5 number centimeter     #N/A=Missing or Not Measured
LF5G The green length of leaf number 5 number centimeter     #N/A=Missing or Not Measured
LF6T The total length of leaf number 6 number centimeter     #N/A=Missing or Not Measured
LF6G The green length of leaf number 6 number centimeter     #N/A=Missing or Not Measured
LF7T The total length of leaf number 7 number centimeter     #N/A=Missing or Not Measured
LF7G The green length of leaf number 7 number centimeter     #N/A=Missing or Not Measured
LF8T The total length of leaf number 8 number centimeter     #N/A=Missing or Not Measured
LF8G The green length of leaf number 8 number centimeter     #N/A=Missing or Not Measured
LF9T The total length of leaf number 9 number centimeter     #N/A=Missing or Not Measured
LF9G The green length of leaf number 9 number centimeter     #N/A=Missing or Not Measured
Comments Comments on individual data points. text        
TTL The sum of the total leaf lengths. number centimeter     #N/A=Missing or Not Measured
TGL The sum of the green leaf lengths. number centimeter     #N/A=Missing or Not Measured
TSL The sum of the lengths of senescent tissue (expressed as a negative number) number centimeter     #N/A=Missing or Not Measured
Time The number of days since the beginning of the surveys. number number     #N/A=Missing or Not Measured
T#LVS The total number of leaves (at each survey date). number number     #N/A=Missing or Not Measured
T#LLVS The total number of leaves that have green tissue (at each survey date). number number     #N/A=Missing or Not Measured
T#NLVS The total number of new leaves (at each survey date). number number     #N/A=Missing or Not Measured
T#OLVS The total number of old leaves (at each survey date). number number     #N/A=Missing or Not Measured

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