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Alaska Peatland Experiment (APEX): Near-earth hyperspectral measurements from June of 2016.

General Information
Data Package:
Local Identifier:knb-lter-bnz.761.2
Title:Alaska Peatland Experiment (APEX): Near-earth hyperspectral measurements from June of 2016.
Alternate Identifier:DOI PLACE HOLDER
Abstract:

This dataset contains hyperspectral data from the Bonanza Creek APEX site taken over several days in June of 2016. The data were collected over in each of the three water table manipulation plots that comprise the APEX site. Spectral reflectance measurements were taken at APEX using an Analytical Spectral Devices Fieldspec Pro that measured reflectance in 1-nm bandwidths between 300 and 2500 nm. The purpose of this data collection was to link vegetation change associated with the experimental manipulation with spectral reflectance characteristics.

Short Name:knb-lter-bnz.761.2
Publication Date:2020-10-27
For more information:
Visit: http://www.lter.uaf.edu/data/data-detail/id/761

Time Period
Begin:
2016-06-10
End:
2016-08-06

People and Organizations
Contact:Data Manager (Bonanza Creek LTER) [  email ]
Creator:McPartland, Mara Y. 
Creator:Kane, Evan S. (Affiliated Scientist)
Creator:Turetsky, Merritt R (Senior Investigator)
Creator:Falkowski, Michael J. 
Organization:Bonanza Creek LTER

Data Entities
Data Table Name:
761_APEX_2016_Hysperspectral.csv
Description:
This dataset contains spectral reflectance data collected with an ASD Fieldspec Pro spectroradiometer taken from the APEX field site on June 7, June 14, June 22, June 23, and June 29th of 2016. Each date contains spectral reflectance measurements performed above the three water table manipulation plots.
Detailed Metadata

Data Entities

Data Table

Data:https://pasta-s.lternet.edu/package/data/eml/knb-lter-bnz/761/2/06add6500d0cd9df403c1fcf29928238
Name:761_APEX_2016_Hysperspectral.csv
Description:This dataset contains spectral reflectance data collected with an ASD Fieldspec Pro spectroradiometer taken from the APEX field site on June 7, June 14, June 22, June 23, and June 29th of 2016. Each date contains spectral reflectance measurements performed above the three water table manipulation plots.
Number of Columns:6

Table Structure
Object Name:761_APEX_2016_Hysperspectral.csv
Text Format:
Number of Header Lines:1
Record Delimiter:\n
Line Delimiter:\n
Orientation:column
Simple Delimited:
Field Delimiter:,

Table Column Descriptions
 treatmentplot.numberscan.numberband_nmreflectanceDate (yyyy/mm/dd)
Column Name:treatment  
plot.number  
scan.number  
band_nm  
reflectance  
Date (yyyy/mm/dd)  
Definition:location of sensorvegetation subplot above which the data were collectedunique identifier for particular instance of data collectionwavelengthspectral reflectanceDate measurement was taken
Storage Type:string  
integer  
integer  
interger  
float  
string  
Measurement Type:nominalnominalnominalratiorationominal
Measurement Values Domain:
Allowed Values and Definitions
Enumerated Domain 
Code Definition
Codec
Definition control treatment
Source
Code Definition
Code l
Definition lowered or drained treatment
Source
Code Definition
Code r
Definition raised or flooded treatment
Source
Definitionvegetation subplot above which the data were collected
Definitionunique identifier for particular instance of data collection
Unitnanometers
Typereal
Unitnanometers
Typereal
DefinitionDate measurement was taken
Missing Value Code:            
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.

Additional Acknowledgements

This research was supported by the National Science Foundation grant #DEB LTREB 1354370 (to ESK and MRT) and NASA grant #NNX14AF96G to (MJF and ESK), as well as cooperative agreements between the USDA Forest Service Northern Research Station and the University of Minnesota and Michigan Tech University. RAM and MM were supported by Minnesota Agricultural Experiment Station project MIN?42?060. APEX is supported by funding for the Bonanza Creek LTER (funded jointly by NSF grant DEB?0423442 and USDA Forest Service, Pacific Northwest Research grant PNW01?JV11261952?231). Generous funding for M. McPartland was made possible by the University of Minnesota Department of Forest Resources. We acknowledge the research groups at APEX, as well as numerous contributors Danielle Rupp, Lucas Albano, Natalie Zwanenburg, Jamie Hollingsworth, and Lynette Potvin.

Keywords

By Thesaurus:
Primary Productioncarbon cycling, productivity, peatland, vegetation, soils, climate, water table manipulation, wetlands, remote sensing, biodiversity

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 experiment is located in a sedge?and?shrub?dominated rich fen on the floodplain of the Tanana River (See Table 2 for species list). APEX was initiated in 2005 to assess the long?term effects of altered hydrology on peatland ecology and biogeochemistry APEX consists of three water table manipulation plots, a raised, lowered, and control treatment, each 120 m2 in size. The lowered treatment plot is drained by a trench (~40 cm wide, ~1 m deep) into the peat, which ranges in depth from 1 to 1.5 m. Water from the trench is then pumped into the raised water table treatment to keep it consistently flooded near the peat surface. The hydrology in the control plot is not manipulated, and its water table typically falls somewhere between the raised and lowered treatment plots.

Methods

FIELD: Spectral reflectance measurements were taken at APEX using an Analytical Spectral Devices Fieldspec Pro that measured reflectance in 1-nm bandwidths between 300 and 2500 nm. Data were collected during peak growing season on between June 7th and 29th 2016. Scans were performed during a 1-h window on each side of solar noon, which occurred at approximately 12:30 p.m. local time. The sun at the time of data collection was at an azimuth angle of approximately 151 degrees east of north. Three scans were performed at each plot at the same location to acquire a local average. The instrument was positioned 1 m above the peat surface, and captured a field of view of 44 cm in diameter.

Sampling Area and Study Extent
Sampling Description:

Sampling Frequency

Every 10 minues

Sampling Extent:
Sampling Site: 
Description:apexcon -- lowland open fen with daily access during the growing season. Site alternate names: control, Fen, Fencon, BC_FEN
Site Coordinates:
Longitude (degree): -148.3138278Latitude (degree): 64.70129167
Sampling Site: 
Description:apexele -- lowland open fen with daily access during the growing season. Site alternate names: raised, Fen, Fenrai
Site Coordinates:
Longitude (degree): -148.31034Latitude (degree): 64.70138
Sampling Site: 
Description:apexlow -- lowland open fen with daily access during the growing season. Site alternate names: lowered, Fen, Fenlow
Site Coordinates:
Longitude (degree): -148.31034Latitude (degree): 64.70138

Time Period
Begin:
2016-06-10
End:
2016-08-06

People and Organizations

Publishers:
Organization:Environmental Data Initiative
Email Address:
info@environmentaldatainitiative.org
Web Address:
https://environmentaldatainitiative.org
Creators:
Individual: Mara Y. McPartland
Address:
Department of Geography, Environment & Society, University of Minnesota Social Sciences 444 267 19th Ave South,
Minneapolis, MN 55455 United States
Phone:
(612) 625-6080 (voice)
Email Address:
mcpar046@umn.edu
Web Address:
https://maraymcpartland.wordpress.com/contact/
Individual: Evan S. Kane
Position:Affiliated Scientist
Address:
School of Forest Resources and Environmental Science, Michigan Technological University,
Houghton, MI 49931 United States
Phone:
(906) 482-6303 (voice)
Email Address:
eskane@mtu.edu
Individual: Merritt R Turetsky
Position:Senior Investigator
Address:
Institute of Arctic and Alpine Research, University of Colorado-Boulder,
Boulder, CO 80309 United States
Email Address:
merritt.turetsky@colorado.edu
Individual: Michael J. Falkowski
Address:
NASA Earth Sciences Division, 300 E. St SW,
Washington, DC 20546 United States
Phone:
202-358-1431 (voice)
Email Address:
michael.falkowski@nasa.gov
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:
2016-06-10
End:
2016-08-06
Sampling Site: 
Description:Dataset geographic description information is unavailable. {datafile/geoCoverage is empty}
Site Coordinates:
Longitude (degree): -148.31034Latitude (degree): 64.70138

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:

additional

Instrumentation: Astral Spectral Devices (ASD) Fieldspec Pro

Status

Completed

Frequency:
Other Metadata

Additional Metadata

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        |     |___element 'unitList'
        |     |     |___text '\n'
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'nanometers'
        |     |     |___text '\n'
        |     |     |___element 'unit'
        |     |     |        \___attribute 'id' = 'yyyymmdd'
        |     |     |___text '\n'
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