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:	2004lggrbnan.04
Dataset Title:	Growth data was collected on one deciduous shrub species on Arctic LTER experimental plots in moist acidic tussock and dry heath tundra 2004, Toolik Field Station, Alaska.
Investigator 1:
First Name:	Laura
Last Name:	Gough
Organization:	Department of Biology
Address line 2:	Box 19498
Address line 3:	University of Texas at Arlington
City:	Arlington
State:	Texas
Zip Code:	76019
Country:	USA
Investigator 2:
First Name:	David
Last Name:	Johnson
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 3:
First Name:	Elizabeth
Last Name:	Ramsey
Associate Investigators:
Keywords:	growth, fertilizer, herbivory, inflorescences, disturbance, primary production
Abstract:	Weekly growth of plant species of three growth forms were measured in the ninth year of a long-term experiment at Toolik Field Station. The experimental treatments excluded small and large mammalian herbivores and increased soil nutrients in two arctic Alaskan tundra communities: moist acidic tussock and dry heath. This data set reports the deciduous dwarf shrub species. Please see 2004lggrgram for the tussock-forming and rhizomatous graminoid species growth data.
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.10020&urlTail=terrest/phengwth/data/2004lggrbnan.csv
Data File Name	2004lggrbnan
Beginning Date	6/14/2004
End Date	8/2/2004
Number of Data Records	1927
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Updated Metadata sheet
	Version 4: Updated metadata form to newer version (without site sheet). CH 24 Jan 2013 Updated to newer metadata with site sheet. CH March 2013.

RESEARCH LOCATION:

Location Name

LTER Moist Acidic Tussock Tundra

LTER Heath Tundra

Select Site or enter New One

Geographic Description

Arctic LTER, Toolik Field Station, North Slope Alaska(68 degrees 38'N, 149 degrees 34'W, elevation 760 m). Moist Acidic Tussock Tundra.

Arctic LTER, Toolik Field Station, North Slope Alaska (68 degrees 38'N, 149 degrees 34'W, elevation 760 m). Dry heath tundra.

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

68.64089

In Decimal Degrees

Longitude

-149.61058

-149.58735

In Decimal Degrees

Elevation

760 m

724

In Meters

Link to Google Map

View on Google Map


TAXONOMIC COVERAGE:
Organisms studied	Betula nana

Methods:	The LTER moist acidic tussock (MAT) site was set up in 1989. The experimental design is four blocks of 5 x 20 meter plots with randomly assigned treatments within each block. Treatments include control (CT), nitrogen (N), phosphorus (P), and nitrogen plus phosplorus (NP). Fertilizer is added annually following snowmelt in June as 10 g/m2 nitrogen (as NH4NO3) and 5 g/m2 phosphorus (as triple superphosphate). Exclosure plots were set up at the MAT site in July 1996 on extra 5 x 20 meter plots within the four-block design of the 1989 LTER acidic tussock experimental plots. On each plot a 5 x 10 meter section was fenced with large mesh (4-inch square mesh) and within this fence, a 5 x 5 meter plot was fenced with a small mesh (1/2-inch square mesh). In each block two fenced plots were set up: a plot with no fertilizer and a plot with annual fertilization treatments as described above. Thus the treatments created are no fence, no fertilization (NFCT); small mesh fence, no fertilization (SFCT); large mesh fence, no fertilization (LFCT); no fence, N plus P (NFNP); small fence, N plus P (SFNP); and large mesh fence, N plus P (LFNP). Only plant species in NFCT, NFNP, SFCT, and SFNP were measured in 2004. The LTER dry heath (DH) site was also established in 1989 using the same methods at MAT in three block replicates. Exclosure plots were set up in 1996 using the same methods at MAT. The same plots were also used in plant species measurement in 2004. Reference citations: Gough, L., E.A. Ramsey, and D.R. Johnson. 2007. Plant-herbivore interactions in Alaskan arctic tundra change with soil nutrient availability. Oikos. 116: 407-418. Sampling description: Three individual plants of the dwarf shrub Betula nana in each plot in each community were selected and tagged early in the 2004 field season. Three individual live stems were tagged on each B. nana shrub. Stems that has one long, terminal shoot that originated the previous year were chosen, and the tag was placed at the bud scar for the previous year. At each sampling date, length of new shoot production, total shoot length, number of new long shoots, number of leaves, and number of flowers were recorded for each tagged shoot. Sampling was conducted weekly, beginning 14 June 2004 at MAT, and 16 June 2004 at DH. Notes: Some plots did not have a third B. nana individual, but are included in the data set. If #SS, # LS, or # Leaves was not recorded, cells are marked with #N/A. If #Ifl was not recorded, cells are marked with #N/A; all recorded #Ifl are new. Sex of individuals shrubs were recorded if determined. New Growth measures the individual lengths of new shoots in centimeters. Total Length measures the total length of the tagged shoot in centimeters.

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Species	Plant species measured.	text
Date	Dates the stems were measured.	datetime		dd-mmm-yyyy
Site	The site of growth measurement	text			MAT = Moist Acidic Tussock \| DH = Dry Heath
Block	The treatment block number	text
Treatment	The manipulated treatment.	text
Plant	The individual plant measured.	text
Stem	The individual stem tagged.	text
# SS	Number of new short shoots on stem.	number	number			#N/A
# LS	Number of new long shoots on stem.	number	number			#N/A
# Leaves	Number of leaves on stem.	number	number			#N/A
# Inf	Number of inflorescences on stem.	number	number			#N/A
Sex	Indicates the sex of the shrub when applicable.	text
New Growth	Length of new shoot production (centimeters)	text
Total Length	Total shoot length	number	centimeter			#N/A
Comments	Information on measurements and data collection.	text

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