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Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): Weekly thaw depth data, 2009-2023

General Information
Data Package:
Local Identifier:knb-lter-bnz.480.23
Title:Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): Weekly thaw depth data, 2009-2023
Alternate Identifier:DOI PLACE HOLDER
Abstract:

The Carbon in Permafrost Experimental Heating Research (CiPEHR) project addresses the following questions: 1) Does ecosystem warming cause a net release of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C, that comprises the bulk of the soil C pool, influence ecosystem C loss?, and 3) How do winter and summer warming alone, and in combination, affect ecosystem C exchange? We are answering these questions using a combination of field and laboratory experiments to measure ecosystem carbon balance and radiocarbon isotope ratios at a warming experiment located in an upland tundra field site near Healy, Alaska in the foothills of the Alaska Range. This data set includes weekly thaw depth measurements collected from winter warming, summer warming, and control treatment plots at CiPEHR. Additional measurements from on-plot gas flux wells, water table monitoring wells, and off-plot locations are also reported. Note that the experimental warming portion of this experiment concluded in 2022. These data are a continuation of measurements taken at previously warmed plots but plots were not actively manipulated in 2023.

Short Name:knb-lter-bnz.480.23
Publication Date:2024-03-08
For more information:
Visit: http://www.lter.uaf.edu/data/data-detail/id/480
Visit: DOI PLACE HOLDER

Time Period
Begin:
2009-05-07
End:
2023-11-17

People and Organizations
Contact:Data Manager (Bonanza Creek LTER) [  email ]
Creator:Kelley, Allison K (Ph.D. Student)
Creator:Pegoraro, Elaine 
Creator:Mauritz, Marguerite (Research Associate Professor)
Creator:Hutchings, Jack 
Creator:Natali, Susan (Affiliate Scientist)
Creator:Hicks-Pries, Caitlin Elizabeth 
Creator:Schuur, Edward (Senior Investigator)
Organization:Bonanza Creek LTER

Data Entities
Data Table Name:
480_EML_AK_CiPEHR_thaw_depth_data_2009-2023.csv
Description:
This data set includes weekly thaw depth measurements collected from winter warming, summer warming, and control treatment plots at CiPEHR. Additional measurements from on-plot gas flux wells, water table monitoring wells, and off-plot locations are also reported.
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/480/23/1d59c5d81dc8f83bb192bcf88e23266b
Name:480_EML_AK_CiPEHR_thaw_depth_data_2009-2023.csv
Description:This data set includes weekly thaw depth measurements collected from winter warming, summer warming, and control treatment plots at CiPEHR. Additional measurements from on-plot gas flux wells, water table monitoring wells, and off-plot locations are also reported.
Number of Columns:11

Table Structure
Object Name:480_EML_AK_CiPEHR_thaw_depth_data_2009-2023.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,
Quote Character:"

Table Column Descriptions
 dateblockfenceplotidwwswtdtreatmentgroupingnote
Column Name:date  
block  
fence  
plot  
id  
ww  
sw  
td  
treatment  
grouping  
note  
Definition:Date measurement was takenExperimental block (spatially determined)snow fence #plot # within each fenceType of measurement: plot = on-plot; water = water table well; gas = gas well; offplottrans = transects of surrounding landscape; offplotald = end of season active layer depth from boreholes made in Spring 2015; highres = on-plot measurements made mid-season to investigate thaw behaviorwinter warming treatmentsummer warming treatmentthaw depthtreatment names; derivable from the ww and sw columns, but provided here for conveniencegrouping names; derived from thaw depth (shallow or deep) and water table depth measurements over time.Additional information for the row's entry
Storage Type:string  
string  
integer  
integer  
string  
string  
string  
float  
string  
string  
string  
Measurement Type:dateTimenominalnominalnominalnominalnominalnominalrationominalnominalnominal
Measurement Values Domain:
FormatYYYY-MM-DD
Precision
DefinitionExperimental block (spatially determined)
Definitionsnow fence #
Definitionplot # within each fence
DefinitionType of measurement: plot = on-plot; water = water table well; gas = gas well; offplottrans = transects of surrounding landscape; offplotald = end of season active layer depth from boreholes made in Spring 2015; highres = on-plot measurements made mid-season to investigate thaw behavior
Definitionwinter warming treatment
Definitionsummer warming treatment
Unitcentimeter
Typereal
Definitiontreatment names; derivable from the ww and sw columns, but provided here for convenience
Definitiongrouping names; derived from thaw depth (shallow or deep) and water table depth measurements over time.
DefinitionAdditional information for the row's entry
Missing Value Code:              
CodeNA
ExplMissing Value
      
Accuracy Report:                      
Accuracy Assessment:                      
Coverage:                      
Methods:                      

Data Package Usage Rights

Data Use

This work has been produced as part of the Long Term Ecological Research Program and data users should adhere to the Data Use Agreement of the Long Term Ecological Research Network. The consumer of these data (“Data User” herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or coauthorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available “as is.” The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Citation

It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User should 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(s), Year of Data Publication, Title of Dataset, Publisher, Dataset identifier, Dataset URL, Dataset DOI. For Example: Van Cleve, Keith; Chapin, F. Stuart; Ruess, Roger W. 2016. Bonanza Creek Experimental Forest: Hourly Temperature (sample, min, max) at 50 cm and 150 cm from 1988 to Present, Bonanza Creek LTER - University of Alaska Fairbanks. BNZ:1, http://www.lter.uaf.edu/data/data-detail/id/1. doi:10.6073/pasta/725db90d86686be13e6d6b2da5d61217.

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 are provided by the Bonanza Creek LTER, a partnership between the University of Alaska Fairbanks, and the U.S. Forest Service. Significant funding for collection of these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers DEB-2224776, DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629) and by the USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-20-JV-11261932-018).

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.

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.

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 in its present condition. 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.

Keywords

By Thesaurus:
Disturbancepermafrost, tundra, thaw depth, active layer, warming

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package
Description:

Experimental Design

The study site at the Eight Mile Lake (EML) watershed is located in the northern foothills of the Alaska Range. While permafrost thaw can sometimes result in water ponding, depending on local topography, this landscape consists largely of relatively well-drained uplands. The CiPEHR experiments were established in 2008 to complement research along a natural permafrost thaw gradient, at an adjacent site. At the permafrost-thaw gradient site permafrost temperature has been monitored annually in a 30-m-deep borehole since1985, before the permafrost started to thaw. There are two experimental warming treatments at the CiPEHR project: Winter warming (WW) increases soil temperature and ground thaw using snow fences; Summer warming (SW) increases growing season air temperature using open top chambers. The warming treatments are applied in a blocked split-plot design to evaluate the seperate and combined effects of winter and summer warming. Permafrost thaw induced by experimental soil (winter) warming has caused subsidence within the footprint of the experiment. Heterogeneous microtopography as a result of subsidence has caused variable moisture conditions with some plots periodically or continuously flooded during the thawed period and some plots remaining dry. A subset of the original plots were measured in 2019 from April to June. A full set of all plots were measured from June to September. A full set of all plots were again measured in 2020 and 2021.

Methods

Data were measured weekly during the growing season using a metal thaw depth probe. Thaw depth was measured in two locations around each experimental plot; the average of these sub-replicates are reported here.

Sampling Area and Study Extent
Sampling Description:

Sampling Frequency

Weekly

Sampling Extent:
Sampling Site: 
Description:EML -- Tussock tundra at treeline with permafrost thaw and thermokarst. This site is in the Eight Mile Lake Watershed, west of the town of Healy on Stampede Road, Interior Alaska. This area contains three sites on a permafrost thaw gradient and a nearby experimental snow fence manipulation.. Site alternate names:
Site Coordinates:
Longitude (degree): -149.239569Latitude (degree): 63.880708

Time Period
Begin:
2009-05-07
End:
2023-11-17

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@edirepository.org
Web Address:
https://edirepository.org
Id:https://ror.org/0330j0z60
Creators:
Individual: Allison K Kelley
Position:Ph.D. Student
Address:
Center for Ecosystem Science and Society, POBox 5620,
Flagstaff, AZ 86011 United States
Phone:
774-239-3709 (voice)
Email Address:
akk259@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/Kelley.html
Individual: Elaine Pegoraro
Email Address:
elainepegoraro@lbl.gov
Individual: Marguerite Mauritz
Position:Research Associate Professor
Address:
University of Texas, El Paso, 500 W University,
El Paso, TX 79902 United States
Email Address:
memauritz@utep.edu
Web Address:
https://expertise.utep.edu/profiles/memauritz
Individual: Jack Hutchings
Address:
Department of Earth and Planetary Sciences, Rudolph Hall Rm 110, One Brookings Drive, Washington University in St. Louis,
St. Louis, MO 63160 United States
Phone:
813-523-8683 (voice)
Email Address:
jackh@wustl.edu
Web Address:
https://scholar.google.com/citations?user=DEiFDNEAAAAJ&hl=en
Individual: Susan Natali
Position:Affiliate Scientist
Address:
Woodwell Climate Research Center, 149 Woods Hole Road,
Falmouth, MA 02540 United States
Phone:
508-444-1560 (voice)
Email Address:
snatali@whrc.org
Web Address:
http://www.whrc.org/about/cvs/snatali.html
Individual: Caitlin Elizabeth Hicks-Pries
Address:
Building 084, Room 0103D, Lawrence Berkeley National Lab,
Berkeley, CA 94720 United States
Phone:
510-495-8046 (voice)
Email Address:
cehpries@lbl.gov
Individual: Edward Schuur
Position:Senior Investigator
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Phone:
(928) 523-8344 (voice)
Email Address:
Ted.Schuur@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/
Organization:Bonanza Creek LTER
Address:
Boreal Ecology Cooperative Research Unit,
University of Alaska Fairbanks,
P.O. Box 756780,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu
Contacts:
Organization:Bonanza Creek LTER
Position:Data Manager
Address:
Boreal Ecology Cooperative Research Unit,
University of Alaska Fairbanks,
P.O. Box 756780,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu
Metadata Providers:
Organization:Bonanza Creek LTER
Position:Data Manager
Address:
Boreal Ecology Cooperative Research Unit,
University of Alaska Fairbanks,
P.O. Box 756780,
Fairbanks, AK 99775 USA
Phone:
907-474-6364 (voice)
Phone:
907-474-6251 (fax)
Email Address:
uaf-bnz-im-team@alaska.edu
Web Address:
http://www.lter.uaf.edu

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period
Begin:
2009-05-07
End:
2023-11-17
Sampling Site: 
Description:Dataset geographic description information is unavailable. {datafile/geoCoverage is empty}
Site Coordinates:
Longitude (degree): -149.225556Latitude (degree): 63.883056

Project

Parent Project Information:

Title:The Bonanza Creek LTER
Personnel:
Individual: Keith Van Cleve
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Role:Principal Investigator
Individual: F.S. Stuart Chapin
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Address:
Department of Biology and Wildlife; Institute of Arctic Biology: University of Alaska Fairbanks 193 Arctic Health P.O. Box 757000,
Fairbanks, AK 99775 United States
Phone:
(907) 455-6408 (voice)
Phone:
(907) 474-6967 (fax)
Email Address:
terry.chapin@alaska.edu
Web Address:
http://terrychapin.org/
Role:Principal Investigator
Individual: Roger W. Ruess
Organization:Bonanza Creek LTER
Position:Lead Principal Investigator
Address:
Institute of Arctic Biology University of Alaska Fairbanks P.O. Box 757000,
Fairbanks, AK 99775-0180 United States
Phone:
(907) 474-7153 (voice)
Phone:
(907) 474-6967 (fax)
Email Address:
rwruess@alaska.edu
Web Address:
http://www.iab.uaf.edu/~roger_ruess/
Role:Principal Investigator
Funding:

NSF Grant numbers DEB-1636476, DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629

USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-01-JV-11261952-231)

Maintenance

Maintenance:
Description:

Status

Ongoing

Frequency:
Other Metadata

Additional Metadata

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        |     |     |        \___attribute 'id' = 'YYYY-MM-DD'
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