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Eight Mile Lake Research Watershed, Thaw Gradient: Seasonal water table depth from 2004-2021

General Information
Data Package:
Local Identifier:knb-lter-bnz.564.15
Title:Eight Mile Lake Research Watershed, Thaw Gradient: Seasonal water table depth from 2004-2021
Alternate Identifier:DOI PLACE HOLDER
Abstract:

In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in soil organic matter, soil respiration, and dissolved organic carbon, in tundra ecosystems. The objective of these proposed measurements is to develop a mechanistic understanding of the SOM sources contributing to C losses following permafrost thawing. We are making these measurements at an established tundra field site near Healy, Alaska in the foothills of the Alaska Range. Field measurements center on a natural experiment where permafrost has been observed to warm and thaw over the past several decades. This area represents a gradient of sites each with a different degree of change due to permafrost thawing. As such, this area is unique for addressing questions at the time and spatial scales relevant for change in arctic ecosystems.

Short Name:knb-lter-bnz.564.15
Publication Date:2022-04-30
For more information:
Visit: http://www.lter.uaf.edu/data/data-detail/id/564
Visit: DOI PLACE HOLDER

Time Period
Begin:
2004-06-19
End:
2021-09-19

People and Organizations
Contact:Data Manager (Bonanza Creek LTER) [  email ]
Creator:Schaedel, Christina (Assistant Research Professor)
Creator:Rodenhizer, Heidi G (PhD Student)
Creator:Celis, Gerardo (Postdoctoral Research Associate)
Creator:Ledman, Justin (Site Technician)
Creator:Schuur, Edward (Senior Investigator)
Organization:Bonanza Creek LTER

Data Entities
Data Table Name:
564_Gradient_WTD_2004_2013.csv
Description:
This data includes water table depth measurements collected for 2004-2013.
Data Table Name:
564_Gradient_WTD_2014.csv
Description:
This data includes water table depth measurements collected for 2014. Water table depth is the distance from the ground to the top of the water table (WTD, cm). Data processed and checked by jl. Majority of wells were frozen prior to May 30
Data Table Name:
564_Gradient_WTD_2015.csv
Description:
This data includes water table depth measurements collected for 2015. Water table depth is the distance from the ground to the top of the water table (WTD, cm). Data processed and checked by cs. Majority of wells were frozen prior to June 23
Data Table Name:
564_Gradient_WTD_2016.csv
Description:
This data includes water table depth measurements collected for 2016.
Data Table Name:
564_Gradient_WTD_2017.csv
Description:
This data includes water table depth measurements collected for 2017.
Data Table Name:
564_Gradient_WTD_2018.csv
Description:
This dataset contains water table depth measurements during the snow-free period in 2018 for the Thaw Gradient site.
Data Table Name:
564_Gradient_WTD_2019.csv
Description:
This dataset contains water table depth measurements during the snow-free period in 2019 for the Thaw Gradient site.
Data Table Name:
564_Gradient_WTD_2020.csv
Description:
This dataset contains water table depth measurements during the snow-free period in 2020 for the Thaw Gradient site.
Data Table Name:
564_Gradient_WTD_2021.csv
Description:
This dataset contains water table depth measurements during the snow-free period in 2021 for the Thaw Gradient site.
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/b876ab49c9399e4c33a486a5c73368e5
Name:564_Gradient_WTD_2004_2013.csv
Description:This data includes water table depth measurements collected for 2004-2013.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2004_2013.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/108bc6be5a47aab60e726dc635615d5e
Name:564_Gradient_WTD_2014.csv
Description:This data includes water table depth measurements collected for 2014. Water table depth is the distance from the ground to the top of the water table (WTD, cm). Data processed and checked by jl. Majority of wells were frozen prior to May 30
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2014.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/0d1f6b243f101586c390b758159e83c4
Name:564_Gradient_WTD_2015.csv
Description:This data includes water table depth measurements collected for 2015. Water table depth is the distance from the ground to the top of the water table (WTD, cm). Data processed and checked by cs. Majority of wells were frozen prior to June 23
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2015.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/3ad50e5532364cff7ac47ebfca924bde
Name:564_Gradient_WTD_2016.csv
Description:This data includes water table depth measurements collected for 2016.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2016.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/d55f344303a862354c9b3b239c724d59
Name:564_Gradient_WTD_2017.csv
Description:This data includes water table depth measurements collected for 2017.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2017.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/336614a2e6853d5d2ef421934f049139
Name:564_Gradient_WTD_2018.csv
Description:This dataset contains water table depth measurements during the snow-free period in 2018 for the Thaw Gradient site.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2018.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/cd7ed123570981bb870c978e6485d0f7
Name:564_Gradient_WTD_2019.csv
Description:This dataset contains water table depth measurements during the snow-free period in 2019 for the Thaw Gradient site.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2019.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/4252dec903ad7d6169234f643a6b06f3
Name:564_Gradient_WTD_2020.csv
Description:This dataset contains water table depth measurements during the snow-free period in 2020 for the Thaw Gradient site.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2020.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
Missing Value Code:        
CodeNA
ExplMissing Value
Accuracy Report:          
Accuracy Assessment:          
Coverage:          
Methods:          

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/564/15/567df9b14c748e8d381e37abc0e5acdc
Name:564_Gradient_WTD_2021.csv
Description:This dataset contains water table depth measurements during the snow-free period in 2021 for the Thaw Gradient site.
Number of Columns:5

Table Structure
Object Name:564_Gradient_WTD_2021.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
 Date DoySiteWellWTD
Column Name:Date  
Doy  
Site  
Well  
WTD  
Definition:Measurement dateDay of year measurement was takenExperimental siteWater well where measurement was takenWater table depth
Storage Type:string  
string  
string  
string  
float  
Measurement Type:nominalnominalnominalnominalratio
Measurement Values Domain:
DefinitionMeasurement date
DefinitionDay of year measurement was taken
DefinitionExperimental site
DefinitionWater well where measurement was taken
Unitcentimeter
Typereal
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-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-01-JV-11261952-231).

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:
Biogeochemistrywater table, snowfences, warming, permafrost, tundra, thaw, thermokarst

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 watershed is located in the northern foothills of the Alaska Range. Permafrost temperature has been monitored annually on a gentle north-facing slope at this site, in a 30 m deep borehole that was installed in 1985 before the permafrost started to thaw. While permafrost thaw can sometimes result in water ponding depending on local topography, this landscape consists largely of relatively well-drained uplands. In this watershed, we monitored three sites that represented differing amounts of change as a result of permafrost thaw based on observations of ground subsidence and depth of thaw. Our minimal thaw site had the shallowest summer thaw depth and the least ground surface subsidence, and the vegetation was typical moist acidic tundra, dominated by the tussock-forming sedge, Eriophorum vaginatum, with coexisting deciduous and evergreen shrubs, and an understory of mosses and lichens. A second site, located adjacent to the borehole, had moderate summer thaw depths and increased ground subsidence. Here the vegetation composition was similar to our minimal thaw site, but with increased biomass of all plant groups. Lastly, an extensive thaw site was located in an area where permafrost degradation had occurred at least several decades prior to the establishment of the borehole; thermokarst can already be observed in air photos of the area taken in 1954. This site had the deepest summer thaw depth and the most ground subsidence, and the plant biomass has shifted to dominance by shrubs, including blueberry (Vaccinium uliginosum) and cloudberry (Rubus chamaemorus), at the expense of sedges.

Methods

Water table depth in relation to the soil surface was measured once every two weeks throughout the snow-free period in water wells. Water table depth data are presented during the time period when wells were ice-free (~ mid-June through September).

Sampling Area and Study Extent
Sampling Description:

Sampling Frequency

during snow-free period, every other week

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:
2004-06-19
End:
2021-09-19

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@environmentaldatainitiative.org
Web Address:
https://environmentaldatainitiative.org
Id:https://ror.org/0330j0z60
Creators:
Individual: Christina Schaedel
Position:Assistant Research Professor
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Phone:
928-523-9588 (voice)
Email Address:
christina.schaedel@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/Schaedel.html
Individual: Heidi G Rodenhizer
Position:PhD Student
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Email Address:
hgr7@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/
Individual: Gerardo Celis
Position:Postdoctoral Research Associate
Address:
Northern Arizona University: Ecosystem Science and Society Center (ECOSS) PO Box 5620,
Flagstaff, AZ 86011 United States
Phone:
352-328-5031 (voice)
Email Address:
gerardo.celis@nau.edu
Web Address:
https://www2.nau.edu/schuurlab-p/Schaedel.html
Individual: Justin Ledman
Position:Site Technician
Address:
PO Box 18 Healy, AK 99743,
Healy, AK 99743 United States
Phone:
651-895-0474 (voice)
Email Address:
justin.ledman@gmail.com
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:
2004-06-19
End:
2021-09-19
Sampling Site: 
Description:Dataset geographic description information is unavailable. {datafile/geoCoverage is empty}
Site Coordinates:
Longitude (degree): -149.2535833Latitude (degree): 63.87836111

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:

corrections

Data processing: data were checked for outliers and missing values which were replaced with NA. Data are provided for the ice-free period (~mid-June through September); early in the season some wels contain ice after most others have thawed, these are also marked 'NA'.

Status

Ongoing

Frequency:
Other Metadata

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