1997-2001 Mangrove Restoration Areas in Salt River Bay National Historical Park and Ecological Preserve, St. Croix, USVI

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Frequently anticipated questions:


What does this data set describe?

Title:
1997-2001 Mangrove Restoration Areas in Salt River Bay National Historical Park and Ecological Preserve, St. Croix, USVI
Abstract:
Apart from two 100 m test plots, mangrove restoration activities were conducted between 1997 and 2001. Each year, thousands of red mangrove propagules were planted in three large rectangular plots on the western side of Sugar Bay. In addition to those large plots, a fringe planting of propagules was conducted along much of the eastern shore of Sugar Bay. A small zone of black mangroves was also planted in 2001 although less than 1% survived long term. Detailed methods of restoration activities are available in Riley and Kent 1999 and SEA 2004. Restoration mangroves were not visible in the 2000 imagery due to the small size of individual seedlings. These plots were therefore delineated with the aid of GPS waypoints acquired by walking or kayaking around the perimeter of each plot. GPS positions were used as a guide to digitize the boundaries of the restoration areas and the results are presented.
Supplemental_Information:
Coordinate Units are decimal degrees Geodetic Model Horizontal Datum Name is North American Datum of 1983 Ellipsoid Name is Geodetic Reference System 80 Semi-major Axis is 6378206.400000 Denominator of Flattening Ratio is 294.978698
  1. How should this data set be cited?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program, 2005, 1997-2001 Mangrove Restoration Areas in Salt River Bay National Historical Park and Ecological Preserve, St. Croix, USVI: NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.

    Online Links:

    This is part of the following larger work.

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program, 20050430, An Ecological Characterization of Salt River Bay National Historic Park and Ecological Preserve.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -64.765150
    East_Bounding_Coordinate: -64.746527
    North_Bounding_Coordinate: 17.796164
    South_Bounding_Coordinate: 17.757953

  3. What does it look like?

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

    Beginning_Date: 1997
    Ending_Date: 2001
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

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

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-Polygon (7)

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

  7. How does the data set describe geographic features?

    mang_restor
    Shapefile Attribute Table (Source: User defined)

    UNIQUEID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    SPECIES
    name of mangrove species (Source: user defined)

    see classification scheme

    UNIQUEID
    ID assigned to each habitat type (Source: software defined)

    ValueDefinition
    74Mangrove habitat consisting of species Avicennia germanis
    75Mangrove habitat consisting of species Rhizophora Mangle

    PLOT
    description of mangrove restoration plot (Source: User defined)

    refer to classification scheme


Who produced the data set?

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

  2. Who also contributed to the data set?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program

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

    Department of the Interior (DOI), National Park Service (NPS), Salt River Bay National Historic Park and Ecological Preserve
    National Park Service (NPS)
    Christiansted, St. Croix, U.S. Virgin Islands 00820-4611

    (340) 773-1460 (voice)
    zandy_hillis-starr@nps.gov


Why was the data set created?

These maps were created to show the mangrove restoration activies at Salt River Bay National Historical Park and Ecological Preserve.


How was the data set created?

  1. From what previous works were the data drawn?

    None (source 1 of 3)
    St. Croix Environmental Association (SEA), 2004, Mangrove restoration at Salt River Bay, St. Croix: St. Croix Environmental Association (SEA), St. Croix, USVI.

    Online Links:

    Type_of_Source_Media: paper
    Source_Contribution: This document describes the restoration project.

    Habitat Digitizer (source 2 of 3)
    Buja, Ken, 2001, ArcView Habitat Digitizer Extension v 3.1: NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.

    Online Links:

    Type_of_Source_Media: computer program
    Source_Contribution:
    This ArcView extension was used to digitize and attribute benthic zones and habitats for Puerto Rico and the U.S. Virgin Islands.

    NGS aerial photos (source 3 of 3)
    Survey, National Geodetic , 2000, NGS Color Aerial Photography.

    Other_Citation_Details:
    These photographs were mosaicked and georeferenced by NOAA's National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
    Type_of_Source_Media: aerial photography and scanned photographs
    Source_Contribution:
    Benthic features were interpreted and mapped from NGS aerial photos of the Salt River Bay region of aerial photographs of St. Croix, U.S.V.I.

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

    Date: 2004 (process 1 of 1)
    Benthic habitat maps were digitized by delineating habitat boundaries from georeferenced imagery loaded into ArcView 3.2 GIS software with the Image Analysis extension and NOAA Coral Reef Habitat Digitizing extensions both activated. On-screen digitizing was conducted with the minimum mapping unit (MMU) set to 100 square meters and the image scale at 1:1500.

    During the digitizing process, image stretches and manipulation of image contrast, brightness and color balance were performed in the ArcView Image Analysis Extension to enhance features in the processed imagery. Additional collateral information, including previously completed habitat maps, NOS nautical charts, and other descriptive references dealing with benthic and coastal habitats of Salt River National Historic Park and Ecological Preserve was used to assist with image interpretation.

    A first draft map was completed and features in the imagery where uncertainties existed, due to confusing or difficult to interpret signatures, were identified for future ground validation effort. An ArcView GIS point theme was generated with points positioned on the features of uncertain habitat type or along transects through gradients between habitat types. The GIS points were converted to GPS waypoints, and were visited for on the ground habitat validation.

    Benthic habitat characterization was conducted at each site by snorkeling, free diving, or via observations from the surface where water depth and clarity permitted. Mangrove habitat characterization was conducted by driving, kayaking or hiking to points and visually identifying mangrove type and cover. GPS data was collected at each location, and site ID, depth, habitat type, and the method used to make the assessment were recorded. The ground validation data was incorporated into the second draft of each map.

    Person who carried out this activity:

    National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
    Biogeography Team Leader, Mapping Manager
    1305 East West Highway
    Silver Spring, MD 20910

    301-713-3028 (voice)
    301-713-4388 (FAX)
    steve.rohmann@noaa.gov

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


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

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

    5 to 10 meters

  3. How accurate are the heights or depths?

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

    None

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

    Plot boundaries were mapped using Global Positioning System (GPS) and then overlayed on geo-referenced aerial photography to verify position.


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: Not for Navigation

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

    Department of the Interior (DOI), National Park Service (NPS), Salt River Bay National Historic Park and Ecological Preserve
    National Park Service (NPS)
    Christiansted, St. Croix, U.S. Virgin Islands 00820-4611

    (340) 773-1460 (voice)
    zandy_hillis-starr@nps.gov

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

    downloadable data

  3. What legal disclaimers am I supposed to read?

    The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) produced this data for Salt River Bay National Historic Park and Ecological Preserve (NPS). NCCOS Biogeography Program does not guarantee the accuracy of the geographic features or attributes. Please see the metadata records for each data set for complete information on the source, limitations, and proper use. Disclaimer- While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 18-Dec-2012
Metadata author:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program
Attn: Matt Kendall
1305 East-West Highway
Silver Spring, MD 20910

301-713-3028 (voice)
301-713-4388 (FAX)

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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