Underwater Video Sites in Jobos Bay

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What does this data set describe?

Title: Underwater Video Sites in Jobos Bay
Abstract:
Shallow-water (<30m) benthic habitat maps of the nearshore marine environment of Jobos Bay, Puerto Rico were mapped and characterized using visual interpretation of optical and acoustic remotely sensed imagery. The objective of this effort, conducted by NOAA's Center for Coastal Monitoring and Assessment Biogeography Branch in partnership with NOAA's National Estuarine Research Reserve System (NERRS), was to provide spatially-explicit information on the habitat types, biological cover and live coral cover in Jobos Bay, Puerto Rico. The data contained in this shapefile denote the mean location of ground validation (GV) sites, which were explored by NOAA field scientists to further refine habitat map classification. In particular, this shapefile includes the mean location of: (1) the drop camera as it drifted over 155 GV sites (logged by a GPS at five-second intervals); (2) the location of 5 GV sites, which were explored while snorkeling; and (3) 8 GV sites, which were explored using a look bucket.
Supplemental_Information:
The creation of high-quality benthic habitat maps required extensive field work to enhance accuracies of habitat attribution and, to a lesser degree, habitat delineation. Data were collected at 168 ground validation sites between 5/12/2009 - 5/19/2009 aboard small research vessels provided by Jobos Bay NERRs. As anchoring at each site was not feasible for rapid assessment, wind and wave effects caused the survey vessel to drift along a transect. Post-processing of the GPS data allowed for a series of points to represent the mean survey location.
  1. How should this data set be cited?

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, 2010, Underwater Video Sites in Jobos Bay: NOAA's Ocean Service, National Centers for Coastal Ocean Science (NCCOS), Silver Spring, MD.

    Online Links:

    Other_Citation_Details:
    Please use citation for the Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership project technical memorandum
    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 Branch, 2010, Benthic Habitats of Jobos Bay, Puerto Rico: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, Silver Spring, MD.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -66.339028
    East_Bounding_Coordinate: -66.149637
    North_Bounding_Coordinate: 18.018906
    South_Bounding_Coordinate: 17.853137

  3. What does it look like?

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

    Beginning_Date: 12-May-2009
    Ending_Date: 19-May-2009
    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):

      • Entity point (168)

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

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 19
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -63.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 1.000000
      Ordinates (y-coordinates) are specified to the nearest 1.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?

    GV_MeanSite_Locations
    Shapefile attribute table (Source: None)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Site Type
    Type of site (i.e., GV or AA) (Source: NOAA Biogeography Branch)

    ValueDefinition
    GVGround validation site

    Site_ID
    Unique site ID (Source: NOAA Biogeography Branch)

    Unique site ID

    Source
    Type of equipment/method used to characterize the seafloor (Source: NOAA Biogeography Branch)

    unitless

    Xcoord
    Longitude of site in decimal degrees (Source: NOAA Biogeography Branch)

    Longitude of site in decimal degrees

    Ycoord
    Latitude of site in decimal degrees (Source: NOAA Biogeography Branch)

    Longitude of site in decimal degrees

    Date_
    Date position was logged (Source: Automated by Trimble)

    Range of values
    Minimum:20090512
    Maximum:20090519

    Time
    Time position was logged (Source: Automated by Trimble)

    Range of values
    Minimum:06:00:00am
    Maximum:06:00:00pm

    VideoPhoto
    Name of video and/or photo file associated with a site (Source: NOAA Biogeography Branch)

    Name of video and/or photo file associated with a site


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?

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

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
    Project Manager - Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership


Why was the data set created?

Extensive field work is needed to create high-quality benthic habitat maps because it enhances the accuracy of habitat attribution and (to a lesser degree) habitat delineation. Given the importance of field work, the primary purpose of this survey data was to explore and verify existing habitat information on the seafloor. In particular, these ground validation locations were targeted by the cartographer to satisfy the following objectives:

1. Explore features in the imagery with unknown or confusing optical or acoustic signatures 2. Confirm that the habitat type correlated with a particular optical or acoustic signature remained consistent throughout the entire study area.

This information was incorporated into a fine-scale assessment of the status, abundance, and distribution of shallow-water marine habitats of Jobos Bay, Puerto Rico. The NOAA effort provides Jobos Bay's National Estuarine Research Reserve with increased technical capacity for ocean exploration, management, and stewardship. Direct implications to management measures include evaluation of management efficacy, a spatial framework for improved monitoring sampling design, improved assessment of human-use impacts, and marine spatial planning to support alternative marine protected area boundary alternatives.


How was the data set created?

  1. From what previous works were the data drawn?

    Trimble SSF files (source 1 of 1)
    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch, 2010, GPS data.

    Type_of_Source_Media: GPS data
    Source_Contribution:
    GPS data, which were originally recorded as code-phase signals in Trimble SSF format, were differentially post-processed to the Continually Operating Reference System (CORS) station at Coamo, Puerto Rico (PRN4).

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

    Date: 2009 (process 1 of 4)
    A first draft benthic habitat map was generated using heads-up visual interpretation and digitization to delineate features on the seafloor with discrete optical or acoustic signatures. During the creation of this first draft map, the cartographer placed discrete points on features in the map that had unknown optical or acoustic signatures. Points were also placed on features with known optical or acoustic signatures (evenly distributed throughout the geographic extent of the map) to confirm that the habitats associated with these signatures remained consistent through the area of interest. These two types of points were labeled as "ground validation" sites and were visited in the field.

    Person who carried out this activity:

    NOAA/NOS/NCCOS/CCMA Biogeography Branch
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
    Date: 2009 (process 2 of 4)
    NOAA scientists explored these ground validation locations using using a manually operated drop camera, underwater still camera and look bucket. The resulting GPS, video and photographic information was processed, analyzed and used to classify each distinct habitat polygon. At the start of every morning, the boat captain selected a general region to begin the day's work. Navigating to field locations was accomplished using a Garmin GPS 76 device with the uploaded GV site coordinates. The boat captain maneuvered the vessel to within 5 m of the target location and made every effort to maintain that location without jeopardizing crew and equipment safety. Once on site, NOAA scientists would simultaneously deploy a SeaViewer Sea-Drop 950 camera and begin logging a waypoint on a Trimble GeoXT GPS receiver.While the video camera was capturing bottom imagery, an observer viewed the video real-time on a Panasonic Toughbook aboard the survey vessel. They categorized each site according to the levels of the habitat classification scheme: major and detailed geomorphological structure, major biological cover, percent major biological cover and percent coral cover. Data was entered into a custom data dictionary generated in Trimble Pathfinder Office software and loaded onto the Trimble data logger.

    Person who carried out this activity:

    NOAA/NOS/NCCOS/CCMA Biogeography Branch
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
    Date: 2009 (process 3 of 4)
    Trimble Pathfinder Office software was used to post process and differentially correct the raw GPS data to the Continually Operating Reference System (CORS) station at Coamo, Puerto Rico (PRN4).

    Person who carried out this activity:

    NOAA/NOS/NCCOS/CCMA Biogeography Branch
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
    Date: 2009 (process 4 of 4)
    Precisely positioned GPS positions and its associated transects were viewed in a GIS to enhance the accuracy of the draft benthic habitat map. Polygon boundaries and habitat classifications were revised where field data necessitated changes.

    Person who carried out this activity:

    NOAA/NOS/NCCOS/CCMA Biogeography Branch
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
  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?

    The points in this data layer were acquired by GPS data using a Trimble GeoXT receiver. All data point characteristics were recorded in the GPS data logger automatically and seamlessly transferred to ArcGIS shapefiles using Trimble Pathfinder Office software. Attributes are all expected to be correct.

  2. How accurate are the geographic locations?

    The true positional accuracy of individual epics was determined to be within 1 m for 96% of the logged points. However, it is estimated that horizontal accuracies may be 0 - 20m from the true position of the underwater camera assessment due to line "lay-back" during drift.

  3. How accurate are the heights or depths?

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

    168 field positions were occupied and habitat characterizations were conducted for ground validation during this work.

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

    Data points were collected with mapping-grade GPS receivers. The data were post processed for differential correction to the Continually Operating Reference System (CORS) station at Coamo, Puerto Rico (PRN4). The locations for each site were averaged to produce a mean site location.

    All attribute information was recorded by the GPS receiver and stored directly in the raw GPS files. This automated process was assumed to be error free. This file is believed to be logically consistent.


How can someone get a copy of the data set?

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

Access_Constraints: Please cite any use of this data.
Use_Constraints:
Note: NOT TO BE USED FOR NAVIGATION.

These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

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

    Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
    Project Manager - Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
    1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
    Silver Spring, MD 20910
    USA

    (301) 713-3028 (voice)
    (301) 713-4384 (FAX)

    Contact_Instructions:
    Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
  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) Biogeography Branch does not guarantee the accuracy of the geographic features or attributes. Please see the written report and metadata records for each data set for complete information on the source, limitations, and proper use.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Contact NOAA for distribution options (see Distributor).


Who wrote the metadata?

Dates:
Last modified: 21-Oct-2013
Metadata author:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Branch
Project Manager - Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
1305 East West Highway, N-SCI-1, SSMC 4, 9th Floor
Silver Spring, MD 20910
USA

(301) 713-3028 (voice)
(301) 713-4384 (FAX)

Contact_Instructions:
Contact info is for CCMA general reception. Please ask for current project manager of Conservation Effects Assessment Project (CEAP): Jobos Bay, Puerto Rico Special Emphasis Watershed Partnership
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.13 on Thu Aug 21 10:41:57 2014