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:	2000shsoilresp.05
Dataset Title:	In situ soil respiration measured in the LTER treatment plots in moist acidic tussock and moist non-acidic tussock tundra, Toolik Field Station, North Slope Alaska, Arctic LTER 2002.
Investigator 1:
First Name:	Sarah
Last Name:	Hobbie
Organization:	Department of Ecology
Address line 2:	University of Minnesota
Address line 3:	1987 Upper Buford Circle
City:	St. Paul
State:	MN
Zip Code:	55108
Country:	USA
Investigator 2:
First Name:	Tiffany
Last Name:	Miley
Organization:
Address line 2:
Address line 3:
City:
State:
Zip Code:
Country:
Investigator 3:
First Name:	Marissa
Last Name:	Weiss
Associate Investigators:
Keywords:	soil respiration, moist acidic tundra, moist non-acidic tundra, organic matter
Abstract:	In situ soil respiration measured in the Arctic LTER treatment plots in moist acidic tussock and moist non-acidic tussock tundra
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.1424&urlTail=terrest/tracegas/data/2000shsoilresp.csv
Data File Name	2000shsoilresp
Beginning Date	5/1/2000
End Date	9/1/2000
Number of Data Records	532
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Version 2: Added title and datatable. 4Oct06 JL.
	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 metadata form to newer version (without site sheet). Updated units to current standards.CH 25Jan2013 Updated to newer metadata with site sheet. CH March 2013.

RESEARCH LOCATION:

Location Name

LTER Moist Acidic Tussock Tundra

LTER Moist NonAcidic Tussock 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). Moist Non-acidic Tussock 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

68.6342

In Decimal Degrees

Longitude

-149.61058

-149.64074

In Decimal Degrees

Elevation

750

In Meters

Link to Google Map

View on Google Map


TAXONOMIC COVERAGE:
Organisms studied

Methods:	We measured soil respiration using a LICOR 6400 IRGA with soil respiration chamber over the course of the season. Measurements were made on PVC collars that were installed in 1999 and clipped of aboveground vegetation. We installed collars by cutting vertically into the peat with a serrated knife and placing collars so that their tops were level with the moss surface. We clipped all vascular vegetation as well as green moss biomass to the soil or brown moss surface. We repeated clipping as needed during 2000. Concurrent with soil respiration measurements, we measured soil temperature at 5 cm below the moss surface, volumetric soil moisture in the top 5 cm of soil with a portable time-domain reflectrometry probe (TDR, Campbell Scientific Instruments), and thaw depth using a stainless steel probe. Reference Citations: "Hobbie, SE, TA Miley, and MS Weiss. 2002. Carbon and nitrogen cycling in soils from different glacial surfaces in northern Alaska. Ecosystems Vol. 5, no. 8, pp. 761-774.

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Date	date in DD-MMM-YYYY format	datetime		dd-mmm-yyyy
Site	MAT refers to moist acidic tundra; MNT refers to moist non-acidic tundra	text
Plot Type	Plot type refers to the treatment: c (control), gh (greenhouse), ghnp (greenhouse nitrogen phosphorus), l (lime), n (nitrogen), p (phosphorus), s (shade), newc (control plots that were established in 1997; all other treatments except newnp were established in 1989 at the MAT and in 1997 at the MNT), newnp (nitrogen + phosphorus plots that were established in 1997; all other treatments except newct were established in 1989 at the MAT and in 1997 at the MNT).	text
Treatment	Similar to plottype, except that newc and c are listed as c	text
Block	treatment blocks (1-4 at the MAT and 1-3 at the MNT)	text
Collar	a or b, referring to the two collars in each plot	text
Thaw1	thaw depth measured near collar a	number	centimeter			#N/A=Missing or Not Measured
Thaw2	thaw depth measured near collar b	number	centimeter			#N/A=Missing or Not Measured
Mean Thaw	mean of thaw1 and thaw2	number	centimeter			#N/A=Missing or Not Measured
Soil Moist	soil moisture measured near the two collars "milivolts (these are raw TDR data, and have not been calibrated against volumetric soil moisture)"	number	millivolt			#N/A=Missing or Not Measured
FinalEfFlux	this was the average of 3-6 measurements made on each collar, unless the respiration rates were clearly increasing over the course of the measurements, in which either the final measurement was used of the final two measurements were averaged. final of the multiple soil respiration measurements made at each collar"	number	micromolePerMeterSquaredPerSecond			#N/A=Missing or Not Measured
Final Soil Temp	this was the final of the multiple soil temperature data averaged for the two collars degrees	number	celsius			#N/A=Missing or Not Measured
Comments	these are comments regarding specific data points	text

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