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Carbon Flux and Greenhouse Gasses of Restored and Degraded Greater Everglades Wetlands: Flux Tower Measurements of Water, Energy and Carbon Cycling in the Big Cypress National Preserve

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Frequently anticipated questions:


What does this data set describe?

Title:
Carbon Flux and Greenhouse Gasses of Restored and Degraded Greater Everglades Wetlands: Flux Tower Measurements of Water, Energy and Carbon Cycling in the Big Cypress National Preserve
Abstract:
Greenhouse gas emissions, specifically carbon dioxide (CO2), are commonly linked with increasing global temperatures and rising sea-level. Of particular concern are rates of sea-level rise and carbon cycling including CO2 emissions or "footprints" of urban areas and the capacity of plant communities to absorb and release CO2. Defining and predicting ecosystem response to regional (e.g., freshwater discharge) and global (e.g., sea level rise) environmental change will require empirical baseline data on the functioning of water, energy and carbon cycles within Greater Everglades ecosystems. However, measurements of carbon and surface-energy cycling are sparse over plant communities within Department of Interior (DOI) managed lands in south Florida. Specifically, the quantity of CO2 absorbed or released annually within subtropical forests and wetlands as well as carbon and energy cycling in response to changes in hydrology, salinity, forest-fires and/or other factors are poorly known. To reduce these uncertainties, eddy-covariance flux stations were constructed by the U.S. Geological Survey and South Florida Water Management District in the Big Cypress National Preserve in 2006. Water, energy and carbon fluxes are empirically measured at these stations. The goals of the project are to (1) quantify key variables of interest to researchers and policy makers such as latent heat flux (the energy equivalent of evapotranspiration), sensible heat flux, incoming solar radiation, net radiation, changes in stored heat energy, albedos, Bowen ratios, net ecosystem production (NEP), gross ecosystem production (GEP), ecosystem respiration; (2) understand variability and linkages within water, energy and carbon-cycles imposed by both natural processes and regional / global stresses; and (3) publish project results in USGS reports and peer-reviewed journal papers.
Defining and predicting ecosystem response to regional (e.g., freshwater discharge) and global (e.g., sea level rise) environmental change will require empirical baseline data on the state and functioning of water, energy and carbon cycles within DOI lands. However, measurements of carbon and surface-energy cycling are sparse over plant communities within DOI managed lands in south Florida. This project intends to measure water and surface energy fluxes within the BCNP. We propose to begin carbon cycling measurements in 2012 and 2013, as time and funding permits. Plant communities selected for study included Pine Upland, Marsh, Cypress Swamp, and Dwarf Cypress. These plant communities are spatially extensive within DOI lands and resources.
  1. How should this data set be cited?

    Barclay Shoemaker, U.S. Geological Survey, Christian Lopez, U.S. Geological Survey, David M. Sumner, U.S. Geological Survey, Bernier, Troy, and Katherine S. Petty, U.S. Geological Survey, Unpublished material, Carbon Flux and Greenhouse Gasses of Restored and Degraded Greater Everglades Wetlands: Flux Tower Measurements of Water, Energy and Carbon Cycling in the Big Cypress National Preserve.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -81.6
    East_Bounding_Coordinate: -80.1
    North_Bounding_Coordinate: 27.6
    South_Bounding_Coordinate: 25.00000
    Description_of_Geographic_Extent: Big Cypress National Preserve, Florida, USA

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 2011
    Ending_Date: Sep-2013
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: Maps and Data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • Barclay Shoemaker, U.S. Geological Survey
    • Christian Lopez, U.S. Geological Survey
    • David M. Sumner, U.S. Geological Survey
    • Troy Bernier
    • Katherine S. Petty, U.S. Geological Survey

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    W. Barclay Shoemaker
    U.S. Geological Survey
    U.S. Geological Survey
    Davie, FL 33314

    (954) 377-5956 (voice)
    bshoemak@usgs.gov


Why was the data set created?

The project objectives are to: (1) Quantify key variables in water energy and carbon cycles, such as latent heat flux (the energy equivalent of evapotranspiration), sensible heat flux, incoming solar radiation, net radiation, albedos, Bowen ratios, net ecosystem production (NEP), gross ecosystem production (GEP), and ecosystem respiration. (2) Understand variability and linkages within water energy and carbon-cycles imposed by both (a) natural processes and (b) secular regional and global stresses, such as changes in hydrology and sea-level rise. (3) Provide published water energy and carbon cycling data on the South Florida Information Access website (SOFIA) along with meta-data.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: Unknown (process 1 of 1)
    No process steps have been described for this data set

  3. What similar or related data should the user be aware of?

    W. B. Shoemaker and D.M. Sumner, 2006, ALTERNATE CORRECTIONS FOR ESTIMATING ACTUAL WETLAND EVAPOTRANSPIRATION FROM POTENTIAL EVAPOTRANSPIRATION: Wetlands 26(2):528-543.

    Online Links:

    W.B. Shoemaker, D.M. Sumner, A. Castillo, 2005, Estimating changes in heat energy stored within a column of wetland surface water and factors controlling their importance in the surface energy budget: Water Resources Research Vol. 51, W10411.

    Online Links:

    Shoemaker, W.B., and Lopez, C.D., and Duever, Michael, 2011, Evapotranspiration over Spatially Extensive Plant Communities in the Big Cypress National Preserve, Southern Florida, 2007–2010: U.S. Geological Survey Scientific Investigations Report 2011–5212.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Unavailable

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All parameters are not available for all sites. See Entity and Attribute Overview description for more detail.

  5. How consistent are the relationships among the observations, including topology?

    Unavailable


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
Cite primary authors and database when using or publishing these data.

  1. Who distributes the data set? (Distributor 1 of 1)

    Heather S. Henkel
    U.S. Geological Survey
    600 Fourth Street South
    St. Petersburg, FL 33701

    727-803-8747 x3028 (voice)
    727-803-2030 (FAX)
    hhenkel@usgs.gov

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    The data have no explicit or implied guarantees.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 24-Sep-2013
Metadata author:
Heather S. Henkel
U.S. Geological Survey
600 Fourth Street South
St. Petersburg, FL 33701

727-803-8747 x3028 (voice)
727-803-2030 (FAX)
sofia-metadata@usgs.gov

Metadata standard:
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (FGDC-STD-001.1-1999)


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Last updated: 23 December, 2016 @ 01:49 PM (KP)