Data Package Metadata View Summary

Eight Mile Lake Research Watershed, Thaw Gradient: half-hourly soil moisture 2010-2018

General Information

Data Package:

Local Identifier:

knb-lter-bnz.666.3

Title:

Eight Mile Lake Research Watershed, Thaw Gradient: half-hourly soil moisture 2010-2018

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. This data set includes soil moisture intergrate over a 20cm soil profile at different locations within gradient of sites described.

Short Name:

knb-lter-bnz.666.3

Publication Date:

2019-06-24

For more information:
Visit:	http://www.lter.uaf.edu/data/data-detail/id/666

Time Period

Begin:

2009-10-01

End:

2018-09-30

People and Organizations
Contact:	Data Manager (Bonanza Creek LTER) [ email ]
Creator:	Celis, Gerardo (Postdoctoral Research Associate)
Creator:	Ledman, Justin (Site Technician)
Creator:	Bracho, Rosvel G. (Postdoctoral Research Associate)
Creator:	Schuur, Edward A.G. (Senior Investigator)
Organization:	Bonanza Creek LTER

Data Entities
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2009-10-01_to_2010-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2010-10-01_to_2011-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2011-10-01_to_2012-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2012-10-01_to_2013-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2013-10-01_to_2014-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2014-10-01_to_2015-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2015-10-01_to_2016-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2016-10-01_to_2017-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Data Table Name:	666_EML_AK_Gradient_Soil_Moist_2017-10-01_to_2018-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/ed69c8eee615eb79bd67b3143ccb3cbf
Name:	666_EML_AK_Gradient_Soil_Moist_2009-10-01_to_2010-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2009-10-01_to_2010-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/60035a1dadce0ee30536a531fbd38c5b
Name:	666_EML_AK_Gradient_Soil_Moist_2010-10-01_to_2011-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2010-10-01_to_2011-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/0153926a7ec2b4e895b83b17001f0668
Name:	666_EML_AK_Gradient_Soil_Moist_2011-10-01_to_2012-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2011-10-01_to_2012-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/f2151f291546a15ad8a005c4d144a0cc
Name:	666_EML_AK_Gradient_Soil_Moist_2012-10-01_to_2013-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2012-10-01_to_2013-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/6619b601d9c78dd1e0673ee028172665
Name:	666_EML_AK_Gradient_Soil_Moist_2013-10-01_to_2014-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2013-10-01_to_2014-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/9a208dd18c6572edae179b08ef1586a6
Name:	666_EML_AK_Gradient_Soil_Moist_2014-10-01_to_2015-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2014-10-01_to_2015-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/c233286da15e0990d7c51d002a5b7cda
Name:	666_EML_AK_Gradient_Soil_Moist_2015-10-01_to_2016-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2015-10-01_to_2016-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/b50def3ec74cbd6bac7d9f1af41b844f
Name:	666_EML_AK_Gradient_Soil_Moist_2016-10-01_to_2017-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2016-10-01_to_2017-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/666/3/1c7145d7af2865ed5357f3ce5bb6f006
Name:	666_EML_AK_Gradient_Soil_Moist_2017-10-01_to_2018-09-30_half_hourly.csv
Description:	This dataset contains volumetric soil moisture content from water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected.
Number of Columns:	8

Table Structure

Object Name:

666_EML_AK_Gradient_Soil_Moist_2017-10-01_to_2018-09-30_half_hourly.csv

Text Format:

Number of Header Lines:

Record Delimiter:

Line Delimiter:

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Column Name:

site

Date

Year

DOY

hour

Loc1

Loc2

Loc3

Definition:

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Date and time measurement was taken

Year of measurements

Day of year

hour

volumetric soil moisture in location 1

volumetric soil moisture in location 2

volumetric soil moisture in location 3

Storage Type:

string

integer

float

Measurement Type:

nominal

dateTime

ratio

Measurement Values Domain:

Definition

Extensive (Extensive thaw site), Moderate (Moderate thaw site), Extensive (Minimal thaw site)

Definition

Date and time measurement was taken

Format	YYYY
Precision

Unit	dimensionless
Type	real

Unit	dimensionless
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Unit	cm3/cm3
Type	real

Missing Value Code:

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing Value

Code	NA
Expl	Missing 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.

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:
Biogeochemistry	ecosystem respiration, gross ecosystem production, net ecosystem exchange, permafrost, 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. Three different locations within each one of the sites representing the permafrost thaw gradient were selected. Moisture sensors were located adjacent to the bases used to measure carbon fluxes (see flux file: EML_AK_Thaw gradient Carbon Fluxes) in August 2010.

Methods

Soil moisture was measured continuosly at 0 to 20 cm in the soil profile at three different locations within each one of the sites representing the permafrost thaw gradient. The water content reflectometers (CS615 and CS616) controlled by a CR1000 datalogger (Campbell Scientific, Logan Utah) were used to measure soil moisture. Data has site calibration and are not temperature corrected. We present data at 30 minutes resolution covering at least the growing season for the measured years at each site.

Sampling Area and Study Extent

Sampling Description:

Sampling Frequency

Scanned every second and averaged every 30 minutes.

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):

-149.239569

Latitude (degree):

63.880708

Time Period

Begin:

2009-10-01

End:

2018-09-30

People and Organizations

Publishers:

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)

Creators:

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:

Rosvel G. Bracho

Position:

Postdoctoral Research Associate

Address:

University of Florida Department of Botany 220 Bartram Hall,

Gainesville, FL 32611 United States

Phone:

(352) 283-1094 (voice)

Email Address:

rbracho@ufl.edu

Web Address:

http://www.biology.ufl.edu/ecosystemdynamics/Bracho.html

Individual:

Edward A.G. 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:

2009-10-01

End:

2018-09-30

Sampling Site:

Description:

Dataset geographic description information is unavailable. {datafile/geoCoverage is empty}

Site Coordinates:

Longitude (degree):

-149.225556

Latitude (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:

corrections

Soil moisture data were site calibrated using eauqtions VWC_CS615 = (0.8025 * signal^2) + (-1.5639 * signal) + 1.0506 and VWC_CS616 = (0.0012 * signal^2) - (0.0476 * signal) + 0.7465. Data includes periods when sensors are in frozen soil.

additional

Data were collected using Campbell Scientific CS615 and CS616 water content reflectometers (volumetric water content, 0-20 cm).

Status

Ongoing

Frequency:

Other Metadata

Additional Metadata

additionalMetadata
        |___text '\n    '
        |___element 'metadata'
        |     |___text '\n      '
        |     |___element 'unitList'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'YYYY'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'YYYY-MM-DDhh:mm:ss'
        |     |     |___text '\n        '
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'cm3/cm3'
        |     |     |___text '\n      '
        |     |___text '\n    '
        |___text '\n  '

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Data Package Metadata View Summary

Eight Mile Lake Research Watershed, Thaw Gradient: half-hourly soil moisture 2010-2018

Data Entities

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Package Usage Rights

Data Use

Citation

Acknowledgement

Notification

Collaboration

Disclaimer

Keywords

Methods and Protocols

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

Experimental Design

Methods

Sampling Frequency

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Maintenance

corrections

additional

Status

Additional Metadata

Recently Added

Recently Updated

Data Package Metadata View Summary

Eight Mile Lake Research Watershed, Thaw Gradient: half-hourly soil moisture 2010-2018

+/- Data Entities

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

Data Table

+/- Data Package Usage Rights

Data Use

Citation

Acknowledgement

Notification

Collaboration

Disclaimer

+/- Keywords

+/- Methods and Protocols

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

Experimental Design

Methods

Sampling Frequency

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

+/- Maintenance

corrections

additional

Status

+/- Additional Metadata

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Maintenance

Additional Metadata