Data Set Citation:
When using this data, please cite the data package:
NCEAS 10645: Zhuang: Toward an adequate quantification of CH4 emissions from land ecosystems: Integrating field and in-situ observations, satellite data, and modeling , National Center for Ecological Analysis and Synthesis , and Turetsky M. 2008.
Methane fluxes from an Alaskan rich fen (APEX)
nceas.921.1 (https://knb.ecoinformatics.org:443/knb/metacat/nceas.921.1/nceas)
General Information:
Title:Methane fluxes from an Alaskan rich fen (APEX)
Identifier:nceas.921
Abstract:
Methane fluxes were collected at APEX rich fen during the summers of 2005 and 2006. APEX Fen is located in the Bonanza Creek LTER outside of Fairbanks, AK. APEX Fen uses a full-factorial water table (flooded or raised, lowered or drained, and control treatments, as well as a moisture gradient) by warming manipulation (warmed, unwarmed treatment).
Keywords:None:
  • Methane
  • peatland
  • Alaska
  • experimental warming
  • water table manipulation
Publication Date:2008-04-11

Involved Parties

Data Set Creators:
Organization:NCEAS 10645: Zhuang: Toward an adequate quantification of CH4 emissions from land ecosystems: Integrating field and in-situ observations, satellite data, and modeling
Organization:National Center for Ecological Analysis and Synthesis
Individual: Merritt Turetsky
Address:
Dept. Plant Biology, Michigan State University,
East Lansing, Michigan 48824 USA
Phone:
517-353-5554 (voice)
Email Address:
mrt@msu.edu
Data Set Contacts:
Individual: Merritt Turetsky
Address:
Dept. Plant Biology, Michigan State University,
East Lansing, Michigan 48824 USA
Phone:
517-353-5554 (voice)
Email Address:
mrt@msu.edu
Associated Parties:
Individual: Merritt Turetsky
Metadata Providers:
Individual: Claire Treat
Individual: Claire Treat

Data Set Characteristics

Geographic Region:
Geographic Description:APEX rich fen is located in the Bonanza Creek Long-term Ecological Research site outside of Fairbanks, AK, USA
Bounding Coordinates:
West:  -147.8700   degrees
East:  -147.8700   degrees
North:  64.8200   degrees
South:  64.8200   degrees
Time Period:
Begin:
2005-06-16
End:
2006-09-10

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

methane flux using static chamber

Methane samples were collected weekly to bi-weekly from clear static chambers (60 cm x 60 cm x 60 cm) placed on collars that are permanently embedded in the peat. Collars were sealed using foam tape. Gas samples were collected into 20 mL syringes over a period of 30 -40 minutes and analyzed for methane concentrations using a GC equipped with an FID detector. Gas fluxes not near zero that did not show a trend (9%26#37;) were discarded.

Sampling Area And Frequency:
Data were collected from 18 collars located within the water table by warming treatments at APEX Fen as described above. Moisuture gradient collars range from a black spruce site (Gradient 1), a site dominated by willow-birch shrubs (Gradient 2), a tussock site (Gradient 3, located on a tussock), and a site dominated by equisetum and carex (Gradient 4). Data coverage at all sites from 16 Jun 2005 - 22 Aug 2005, and from 19 Jun 2006 - 10 Sept 2006.
Sampling Description:
Water table treatments were randomly assigned to each plot. Permanent gas measurement collars were established within these plots and randomly assigned to a warming treatment.

Data Set Usage Rights

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Access Control:
Auth System:knb
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Metadata download: Ecological Metadata Language (EML) File